CCENT Practice Certification Exam # 1
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CCENT Practice Certification Exam #1
- 1.
What are two ways that TCP uses the sequence numbers in a segment? (Choose two.)
- A.
To identify missing segments at the destination
- B.
To reassemble the segments at the remote location
- C.
To specify the order in which the segments travel from source to destination
- D.
To limit the number of segments that can be sent out of an interface at one time
- E.
To determine if the packet changed during transit
Correct Answer(s)
A. To identify missing segments at the destination
B. To reassemble the segments at the remote locationExplanation
TCP uses sequence numbers in a segment to identify missing segments at the destination, allowing the receiver to request retransmission of any missing segments. Additionally, TCP uses sequence numbers to reassemble the segments at the remote location in the correct order, ensuring that the data is received as intended.Rate this question:
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- 2.
Which three statements characterize UDP? (Choose three.)
- A.
UDP provides connectionless, fast transport of data at Layer 4.
- B.
UDP provides connection-oriented, fast transport of data at Layer 3.
- C.
UDP relies on application layer protocols for error detection.
- D.
UDP works well when an application does not need to guarantee delivery of data.
- E.
UDP relies on IP for error detection and recovery.
Correct Answer(s)
A. UDP provides connectionless, fast transport of data at Layer 4.
C. UDP relies on application layer protocols for error detection.
D. UDP works well when an application does not need to guarantee delivery of data.Explanation
UDP is a protocol that operates at Layer 4 of the OSI model. It provides a connectionless and fast transport of data, meaning that it does not establish a formal connection before transmitting data and does not guarantee delivery of data. UDP relies on application layer protocols for error detection, as it does not have built-in error checking mechanisms. Therefore, it works well for applications that do not require reliable delivery of data, such as streaming media or real-time communication.Rate this question:
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- 3.
Refer to the exhibit. Host A sends a data packet to host B. What will be the addressing information of the data packet when it reaches host B? A: B: C: D:
- A.
Image A
- B.
Image B
- C.
Image C
- D.
Image D
Correct Answer
A. Image AExplanation
The addressing information of the data packet when it reaches host B will be as shown in Image A.Rate this question:
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- 4.
Which layer of the OSI model defines logical addressing?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
- E.
Network
Correct Answer
E. NetworkExplanation
The network layer of the OSI model is responsible for logical addressing. This means that it assigns unique addresses to devices on a network, allowing them to communicate with each other. Logical addresses, such as IP addresses, are used to identify the source and destination of data packets. The network layer also determines the best path for data transmission and handles routing protocols. Therefore, the network layer is the correct answer for this question.Rate this question:
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- 5.
Which device connects a local LAN to a geographically separate network?
- A.
Switch
- B.
Hub
- C.
Router
- D.
Bridge
Correct Answer
C. RouterExplanation
A router is a device that connects a local LAN (Local Area Network) to a geographically separate network. It is responsible for directing network traffic between different networks, such as connecting a home network to the internet. Routers use routing tables to determine the best path for data packets to travel from one network to another. Unlike switches and hubs, which are used to connect devices within a local network, routers are specifically designed to connect different networks together. A bridge is used to connect two local networks, while a switch is used to connect multiple devices within a local network.Rate this question:
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- 6.
Refer to the exhibit. Router1 receives packets addressed as follows: Source IP address: 192.168.1.88Destination IP address: 172.16.0.3Source MAC address: 00-11-12-7a-41-10Destination MAC address: 00-11-5c-cc-a9-c0Source Port: 1464Destination Port: 23 Assuming that Router1 has not been configured with NAT, what will happen to the packets?
- A.
The packets will be sent to the server because it is a server-based port.
- B.
The packets will be sent to Switch2 and not leave the switch because the packets are local.
- C.
The packets will be sent to the laptop host.
- D.
The packets will be sent to Router1 and dropped because private addresses are not transmitted across the Internet.
- E.
The packets will be sent to Router2 and dropped because the server is not directly attached.
Correct Answer
D. The packets will be sent to Router1 and dropped because private addresses are not transmitted across the Internet.Explanation
The packets will be sent to Router1 and dropped because private addresses are not transmitted across the Internet. Private IP addresses, such as 192.168.1.88, are used for internal networks and are not routable on the internet. Therefore, when Router1 receives packets with a private source IP address, it will drop them as it cannot forward them to the destination IP address on the internet.Rate this question:
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- 7.
Refer to the exhibit. If host 1 was to send an HTTP request to the web server that connects to Router2, what type of Layer 2 frame would be sent between Router1 and the ISP?
- A.
A frame with a header that contains the port number of 80
- B.
A frame with a header and trailer, but no MAC addresses
- C.
A frame with a header and a trailer that only contains IP addresses
- D.
A frame with the host 1 MAC address as the source and Router1 MAC address as the destination
- E.
A frame with the host 1 MAC address as the source and the server MAC address as the destination
Correct Answer
B. A frame with a header and trailer, but no MAC addressesExplanation
When host 1 sends an HTTP request to the web server that connects to Router2, the Layer 2 frame that would be sent between Router1 and the ISP would not contain MAC addresses. This is because at Layer 2, the frames are encapsulated with MAC addresses for communication within a local network. However, when the frame is sent to the ISP, it is stripped of the MAC addresses and encapsulated with Layer 3 IP addresses for communication over the internet. Therefore, the frame would have a header and trailer, but no MAC addresses.Rate this question:
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- 8.
A company needs to connect an office router to a service provider to access a WAN. What device is needed to connect the router to the ISP if the service provider supplies a T1 line for the connection?
- A.
A CSU/DSU
- B.
A cable modem
- C.
A DSL router
- D.
A DTE device
- E.
An SLA device
Correct Answer
A. A CSU/DSUExplanation
A CSU/DSU (Channel Service Unit/Data Service Unit) is needed to connect the office router to the ISP if the service provider supplies a T1 line for the connection. A CSU/DSU is a device that provides the necessary interface between the router and the T1 line. It converts the digital data from the router into a format that can be transmitted over the T1 line and vice versa. It also performs functions such as line conditioning and synchronization, ensuring a reliable and efficient connection between the router and the ISP.Rate this question:
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- 9.
Refer to the exhibit. A technician applies the configuration in the exhibit to an unconfigured router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
- A.
Enable password class line console 0 password ccna
- B.
Enable secret cisco enable password class line console 0 password ccna
- C.
Enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0 enable password class line console 0 password ccna
- D.
Enable secret cisco enable password 7 14141E0A1F17 line console 0 password 7 020507550A
- E.
Enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0 enable password 7 14141E0A1F17 line console 0 password 7 020507550A
Correct Answer
E. Enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0 enable password 7 14141E0A1F17 line console 0 password 7 020507550AExplanation
The technician should expect to see the lines "enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0", "enable password 7 14141E0A1F17", "line console 0", and "password 7 020507550A" in the router output from the show running-config command. These lines indicate that the router has been configured with an enable secret password, an enable password, a console line, and a password for the console line. The passwords are encrypted using different encryption methods, such as MD5 and type 7 encryption.Rate this question:
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- 10.
Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?
- A.
DD:DD:DD:DD:DD:DD
- B.
172.168.10.99
- C.
CC:CC:CC:CC:CC:CC
- D.
172.168.10.65
- E.
BB:BB:BB:BB:BB:BB
Correct Answer
E. BB:BB:BB:BB:BB:BBExplanation
When host A sends an IP packet to host B, the destination address in the frame when it leaves host A will be BB:BB:BB:BB:BB:BB.Rate this question:
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- 11.
Refer to the exhibit. What two facts can be determined from the output of the ping command? (Choose two.)
- A.
There was a destination unreachable error.
- B.
The packet type was unknown.
- C.
One packet timed out.
- D.
The ping was interrupted.
- E.
Four packets of data were successfully received.
Correct Answer(s)
C. One packet timed out.
E. Four packets of data were successfully received.Explanation
From the output of the ping command, two facts can be determined. Firstly, one packet timed out, which means that the destination did not respond to that particular packet. Secondly, four packets of data were successfully received, indicating that the majority of the packets sent were received without any issues.Rate this question:
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- 12.
Refer to the exhibit. The switches are in their default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for its default gateway. Which network hosts will receive the ARP request sent by host A?
- A.
Only host D
- B.
Only router R1
- C.
Only hosts A, B, C, and D
- D.
Only hosts B and C
- E.
Only hosts B, C, and router R1
Correct Answer
E. Only hosts B, C, and router R1Explanation
Host A needs to communicate with host D, but it does not have the MAC address for its default gateway. In order to obtain the MAC address, host A will send an ARP request. This request will be broadcasted to all hosts within the same network segment, which includes hosts B and C. Additionally, the request will also be sent to the router R1, as it is the default gateway for host A. Therefore, the ARP request will be received by hosts B, C, and router R1.Rate this question:
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- 13.
Refer to the exhibit. Which password will the administrator need to use on this device to enter privileged EXEC mode?
- A.
Cisco
- B.
Class
- C.
Password
- D.
Cisco
Correct Answer
D. CiscoExplanation
The administrator will need to use the password "cisco" to enter privileged EXEC mode on this device.Rate this question:
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- 14.
Refer to the exhibit. Switch1 has only the following commands added to a default Cisco 2960 configuration: enable secret cisco line vty 0 4 password Kn0ckkn-cK login interface vlan 1 ip address 10.0.1.8 255.255.255.0 no shutdown Assume that routing between networks is functioning properly and that Switch2 has been properly configured for remote access. What would the result be if the telnet 10.0.2.2 command is issued from Switch1 privileged mode?
- A.
The following prompt would appear: User Access Verification Password:
- B.
Switch2 would return a destination unreachable message to Switch1.
- C.
Router1 would return a destination unreachable message to Switch1.
- D.
The packet would be dropped.
Correct Answer
D. The packet would be dropped.Explanation
The exhibit shows that Switch1 has been configured with an IP address of 10.0.1.8/24 on VLAN 1. However, there is no default gateway configured on Switch1. Therefore, when the telnet 10.0.2.2 command is issued from Switch1, the packet would be sent to the destination IP address 10.0.2.2, but since there is no default gateway, Switch1 does not know how to reach that destination network. As a result, the packet would be dropped.Rate this question:
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- 15.
What caused the following error message to appear? 01:11:12: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/8, putting Fa0/8 in err-disable state 01:11:12: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 0011.a0d4.12a0 on port FastEthernet0/8.01:11:13: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/8, changed state to down 01:11:14: %LINK-3-UPDOWN: Interface FastEthernet0/8, changed state to down
- A.
Another switch was connected to this switch port with the wrong cable.
- B.
An unauthorized user tried to telnet to the switch through switch port Fa0/8.
- C.
NAT was enabled on a router, and a private IP address arrived on switch port Fa0/8.
- D.
A host with an invalid IP address was connected to a switch port that was previously unused.
- E.
Port security was enabled on the switch port, and an unauthorized connection was made on switch port Fa0/8.
Correct Answer
E. Port security was enabled on the switch port, and an unauthorized connection was made on switch port Fa0/8.Explanation
An unauthorized connection was made on switch port Fa0/8 because port security was enabled on the switch port.Rate this question:
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- 16.
When configuring a switch to use SSH for virtual terminal connections, what is the purpose of the crypto key generate rsa command?
- A.
Show SSH connected hosts
- B.
Disconnect SSH connected hosts
- C.
Create a public and private key pair
- D.
Show active SSH ports on the switch
- E.
Access the SSH database configuration
Correct Answer
C. Create a public and private key pairExplanation
The purpose of the "crypto key generate rsa" command is to create a public and private key pair. This key pair is necessary for establishing a secure SSH (Secure Shell) connection between the switch and the client. The public key is used to encrypt data sent from the client to the switch, while the private key is used to decrypt the data on the switch. This ensures that the communication between the switch and the client is secure and protected from unauthorized access.Rate this question:
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- 17.
Which three statements are true about full-duplex operation on an Ethernet network? (Choose three.)
- A.
There are no collisions in full-duplex mode.
- B.
A dedicated switch port is required for each node.
- C.
Hub ports are preconfigured for full-duplex mode.
- D.
The host network card must detect the availability of the media before transmitting.
- E.
The host network card and the switch port must both be in full-duplex mode.
Correct Answer(s)
A. There are no collisions in full-duplex mode.
B. A dedicated switch port is required for each node.
E. The host network card and the switch port must both be in full-duplex mode.Explanation
In full-duplex mode on an Ethernet network, there are no collisions because data can be transmitted and received simultaneously. A dedicated switch port is required for each node to enable full-duplex communication. Additionally, both the host network card and the switch port must be in full-duplex mode to ensure proper communication.Rate this question:
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- 18.
- A.
1
- B.
2
- C.
3
- D.
4
- E.
14
Correct Answer
B. 2 -
- 19.
Reference Only.. Choose Answer A
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
A. A -
- 20.
Refer to the exhibit. The devices have been configured with static IP addresses as shown. All hosts can communicate with each other but none of the hosts can communicate with the server. What is the cause of this problem?
- A.
The IP address that is assigned to the server is in an incorrect subnet.
- B.
The IP address that is assigned to the server is a broadcast address.
- C.
The IP address that is assigned to the server is a network address.
- D.
The switch to which the server is connected has not been assigned an IP address.
- E.
The RouterB LAN interface is incorrectly addressed in the RouterA LAN subnet.
Correct Answer
A. The IP address that is assigned to the server is in an incorrect subnet.Explanation
The devices in the network have been configured with static IP addresses, but the server's IP address is in an incorrect subnet. This means that the server's IP address does not match the subnet mask used by the other devices in the network. As a result, the server cannot communicate with the other hosts because they are in different subnets.Rate this question:
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- 21.
A network host has the IP address 10.250.206.55/20. How many more network devices can be added to this same subnetwork?
- A.
253
- B.
509
- C.
1021
- D.
2045
- E.
4093
Correct Answer
E. 4093Explanation
The given IP address 10.250.206.55/20 indicates that it belongs to a subnet with a subnet mask of 20 bits. In a subnet with a 20-bit mask, the first 20 bits are used for the network address, leaving 12 bits for host addresses. With 12 bits, there are 2^12 (4096) possible host addresses. However, some of these addresses are reserved for network and broadcast addresses. In this case, the network address is 10.250.192.0 and the broadcast address is 10.250.207.255, leaving 4094 usable host addresses. Therefore, 4093 more network devices can be added to this same subnetwork.Rate this question:
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- 22.
Which type of Network Address Translation allows a host on a public network consistent access to a specified private inside host?
- A.
Port-based NAT
- B.
Static NAT
- C.
Dynamic NAT
- D.
NAT overload
Correct Answer
B. Static NATExplanation
Static NAT allows a host on a public network to have consistent access to a specified private inside host. With static NAT, a one-to-one mapping is created between the public IP address and the private IP address, ensuring that the inside host always has the same public IP address when communicating with the outside network. This allows for consistent and predictable access to the inside host from the public network.Rate this question:
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- 23.
Refer to the exhibit. Which two addresses are "inside global" addresses? (Choose two.)
- A.
192.168.7.3
- B.
64.100.1.5
- C.
198.133.219.35
- D.
192.168.7.2
- E.
198.133.219.44
Correct Answer(s)
C. 198.133.219.35
E. 198.133.219.44Explanation
The "inside global" addresses are the public IP addresses that are used on the outside network. In this case, the addresses 198.133.219.35 and 198.133.219.44 are the only ones that belong to the public IP address range, which makes them the "inside global" addresses. The other addresses (192.168.7.3, 64.100.1.5, and 192.168.7.2) are private IP addresses and therefore not considered "inside global" addresses.Rate this question:
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- 24.
Which addresses are valid host IP addresses given the subnet mask 255.255.255.248? (Choose three.)
- A.
192.168.200.87
- B.
194.10.10.104
- C.
223.168.210.100
- D.
220.100.100.154
- E.
196.123.142.190
Correct Answer(s)
C. 223.168.210.100
D. 220.100.100.154
E. 196.123.142.190Explanation
The subnet mask 255.255.255.248 indicates that the network portion of the IP address is the first 29 bits, leaving the last 3 bits for host addresses. In binary, this subnet mask is represented as 11111111.11111111.11111111.11111000. This means that the valid host IP addresses must have the last 3 bits set to any value other than all zeros (network address) or all ones (broadcast address). Among the given options, 223.168.210.100, 220.100.100.154, and 196.123.142.190 have the last 3 bits set to non-zero values, making them valid host IP addresses.Rate this question:
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- 25.
The router receives a packet with the destination address of 172.16.30.79. To which subnetwork does this packet belong?
- A.
172.16.30.0/22
- B.
172.16.30.64/22
- C.
172.16.30.76/22
- D.
172.16.28.0/22
- E.
172.16.28.56/22
Correct Answer
D. 172.16.28.0/22Explanation
The given packet with the destination address of 172.16.30.79 belongs to the subnetwork 172.16.28.0/22. This is because the destination IP address falls within the range of the subnet 172.16.28.0 to 172.16.31.255, which is defined by the /22 subnet mask. The other subnetwork options do not encompass the given IP address.Rate this question:
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- 26.
Refer to the exhibit. What is the broadcast address for the subnetwork on which host A resides?
- A.
10.255.255.255
- B.
10.144.255.255
- C.
10.149.255.255
- D.
10.149.191.255
- E.
10.159.255.255
Correct Answer
E. 10.159.255.255Explanation
The broadcast address is the highest address in a subnetwork and is used to send a message to all devices on that subnetwork. In this case, the broadcast address for the subnetwork on which host A resides would be 10.159.255.255. This is because the given IP addresses are all in the range of 10.x.x.x, and the highest value for the third octet is 159. Therefore, the broadcast address would have the same first three octets (10.159) and the highest value for the fourth octet (255).Rate this question:
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- 27.
Reference only. Choose Answer B
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. B -
- 28.
What can a network administrator modify on a router to specify the location from which the Cisco IOS loads? (Choose two.)
- A.
System ROM
- B.
The startup configuration file
- C.
The system image file
- D.
The configuration register value
- E.
The NVRAM file system
Correct Answer(s)
B. The startup configuration file
D. The configuration register valueExplanation
A network administrator can modify the startup configuration file on a router to specify the location from which the Cisco IOS loads. This file contains the configuration settings for the router and can be modified to specify the location of the IOS image file. The administrator can also modify the configuration register value, which is a 16-bit value that determines how the router boots up and where it looks for the IOS image file. By changing this value, the administrator can specify the location from which the IOS loads.Rate this question:
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- 29.
Which two items are required for initial configuration of Cisco routers if the IOS command-line interface is used? (Choose two.)
- A.
A crossover cable
- B.
A rollover cable
- C.
An RJ-15 to DB-9 adapter
- D.
Terminal emulation software
- E.
Router VTY port
Correct Answer(s)
B. A rollover cable
D. Terminal emulation softwareExplanation
A rollover cable is required for initial configuration of Cisco routers because it is used to connect the router's console port to a computer's serial port. This allows the user to access the router's command-line interface for configuration. Terminal emulation software is also required as it provides the user interface for accessing and configuring the router through the console connection.Rate this question:
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- 30.
Refer to the exhibit. The router named "myhome" has received a frame from the host 192.168.254.7. The contents of this frame are being sent to host 172.16.14.243. What is the Layer 2 destination address of the frame as it leaves the myhome router?
- A.
0008.a3b6.ce05
- B.
0009.1281.18a8
- C.
000a.8a47.e612
- D.
172.16.14.129
- E.
172.16.14.243
Correct Answer
A. 0008.a3b6.ce05Explanation
The Layer 2 destination address of the frame as it leaves the "myhome" router is 0008.a3b6.ce05.Rate this question:
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- 31.
Refer to the exhibit. What two facts can be determined about the network from the exhibited output? (Choose two.)
- A.
The MontegoBay router does not have any LAN interfaces configured.
- B.
The Negril router is connected to the S0/1 interface of the MontegoBay router.
- C.
There are only four devices in this network.
- D.
Layer 3 is functioning properly on all routers.
- E.
Layer 2 is operational on three ports of the MontegoBay router.
Correct Answer(s)
B. The Negril router is connected to the S0/1 interface of the MontegoBay router.
E. Layer 2 is operational on three ports of the MontegoBay router.Explanation
Based on the exhibited output, we can determine that the Negril router is connected to the S0/1 interface of the MontegoBay router. This can be inferred from the information provided in the exhibit. Additionally, we can also determine that Layer 2 is operational on three ports of the MontegoBay router. This suggests that the data link layer is functioning properly on those three ports of the router.Rate this question:
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- 32.
Which set of commands is used to name a router and save the configuration?
- A.
Router(config)# hostname South South(config)# copy running-config startup-config
- B.
Router(config)# hostname South South(config)# exit South# copy running-config startup-config
- C.
Router(config)# ip host South South(config)# copy running-config startup-config
- D.
Router(config)# ip host South South(config)# exit South# copy running-config startup-config
Correct Answer
B. Router(config)# hostname South South(config)# exit South# copy running-config startup-configExplanation
The set of commands "Router(config)# hostname South" is used to name the router as "South". The command "South(config)# exit" is used to exit the configuration mode. Finally, the command "South# copy running-config startup-config" is used to save the configuration by copying the running configuration to the startup configuration.Rate this question:
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- 33.
Which command is used to create an encrypted password that restricts access to the privileged EXEC mode of a Cisco router?
- A.
RouterA(config)# encrypted password cisco
- B.
RouterA(config)# password encrypted cisco
- C.
RouterA(config)# enable password cisco
- D.
RouterA(config)# enable secret cisco
- E.
RouterA(config)# service-password encryption cisco
Correct Answer
D. RouterA(config)# enable secret ciscoExplanation
The correct answer is "RouterA(config)# enable secret cisco". This command is used to create an encrypted password that restricts access to the privileged EXEC mode of a Cisco router. The "enable secret" command encrypts the password using a strong encryption algorithm, providing an added layer of security compared to the other options listed.Rate this question:
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- 34.
Refer to the exhibit. A network administrator working at HostA has problems accessing the FTP server. Layer 3 connectivity testing was successful from HostA to the S0/0/1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB to check its status?
- A.
RouterB(config)# enable secret class RouterB(config)# line vty 0 4 RouterB(config-if)# login
- B.
RouterB(config)# enable secret class RouterB(config)# line vty 0 RouterB(config-line)# password cisco RouterB(config-line)# login
- C.
RouterB(config)# enable secret class RouterB(config)# line aux 0 RouterB(config-line)# password cisco RouterB(config-line)# login
- D.
RouterB(config)# enable secret class RouterB(config)# line aux 0 RouterB(config-vty)# password cisco RouterB(config-vty)# login
Correct Answer
B. RouterB(config)# enable secret class RouterB(config)# line vty 0 RouterB(config-line)# password cisco RouterB(config-line)# loginExplanation
The correct set of commands will allow the network administrator to telnet to RouterB to check its status. The "enable secret class" command sets the privileged EXEC mode password to "class". The "line vty 0" command specifies the virtual terminal lines and the number 0 indicates the first line. The "password cisco" command sets the password for the virtual terminal line to "cisco". The "login" command enables login authentication on the virtual terminal line.Rate this question:
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- 35.
What is the purpose of using SSH to connect to a router?
- A.
It allows a router to be configured using a graphical interface.
- B.
It allows a secure remote connection to the router command line interface.
- C.
It allows the router to be monitored through a network management application.
- D.
It allows secure transfer of the IOS software image from an unsecure workstation or server.
Correct Answer
B. It allows a secure remote connection to the router command line interface.Explanation
Using SSH to connect to a router allows for a secure remote connection to the router's command line interface. This means that administrators can access and configure the router's settings and commands remotely while ensuring that the connection is encrypted and secure. This is important for maintaining the confidentiality and integrity of the network, as it prevents unauthorized access and protects sensitive information from being intercepted or tampered with during the connection process.Rate this question:
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- 36.
Which two statements describe the command ip route 192.168.7.24 255.255.255.248 192.168.7.9? (Choose two.)
- A.
A packet that is destined for host 192.168.7.30 will be forwarded to address 192.168.7.9.
- B.
The address 192.168.7.9 is the destination network for this route.
- C.
The address 192.168.7.24 is the next-hop router in this command.
- D.
This command is issued from the interface configuration mode.
- E.
This command is used to define a static route.
Correct Answer(s)
A. A packet that is destined for host 192.168.7.30 will be forwarded to address 192.168.7.9.
E. This command is used to define a static route.Explanation
The command "ip route 192.168.7.24 255.255.255.248 192.168.7.9" is used to define a static route. It specifies that any packet destined for host 192.168.7.30 should be forwarded to the address 192.168.7.9.Rate this question:
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- 37.
Which protocol is described as an enhanced distance vector routing protocol?
- A.
RIP v1
- B.
RIP v2
- C.
EIGRP
- D.
OSPF
Correct Answer
C. EIGRPExplanation
EIGRP is described as an enhanced distance vector routing protocol. It is an advanced version of the distance vector protocol that includes additional features such as support for multiple network layer protocols, faster convergence, and more efficient use of bandwidth. EIGRP uses a combination of distance vector and link-state routing algorithms, making it more scalable and flexible than traditional distance vector protocols like RIP.Rate this question:
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- 38.
Refer to the exhibit. A network administrator can successfully ping, using IP addresses, between router Jax and router Atlanta. However, when the command telnet Atlanta is entered from the Jax router, the Telnet connection fails. Which two reasons could be the cause of the failure? (Choose two.)
- A.
The Jax router is not an entry in the host table of the Atlanta router.
- B.
The Jax router does not have an entry for Atlanta in its host table.
- C.
The hostname command is not configured correctly on the Atlanta router.
- D.
The hostname command is not configured correctly on the Jax router.
- E.
Access to a DNS server is not available.
Correct Answer(s)
B. The Jax router does not have an entry for Atlanta in its host table.
E. Access to a DNS server is not available.Explanation
The first reason for the Telnet connection failure could be that the Jax router does not have an entry for Atlanta in its host table. This means that the Jax router does not have the necessary information to route the Telnet connection to the Atlanta router. The second reason could be that access to a DNS server is not available. Without access to a DNS server, the Jax router cannot resolve the hostname "Atlanta" to its corresponding IP address, preventing the Telnet connection from being established.Rate this question:
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- 39.
From what two locations can a router load the Cisco IOS during the boot process? (Choose two.)
- A.
RAM
- B.
TFTP server
- C.
NVRAM
- D.
Setup routine
- E.
Flash memory
Correct Answer(s)
B. TFTP server
E. Flash memoryExplanation
During the boot process, a router can load the Cisco IOS from two locations: TFTP server and Flash memory. TFTP (Trivial File Transfer Protocol) server is a network protocol used to transfer files over a network. The router can retrieve the Cisco IOS image from a TFTP server located on the network. Flash memory, on the other hand, is a non-volatile storage location on the router where the Cisco IOS image can be stored and loaded during the boot process.Rate this question:
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- 40.
Which two statements describe the functions or characteristics of ROM in a router? (Choose two.)
- A.
Stores routing tables
- B.
Allows software to be updated without replacing pluggable chips on the motherboard
- C.
Maintains instructions for POST diagnostics
- D.
Holds ARP cache
- E.
Stores bootstrap program
Correct Answer(s)
C. Maintains instructions for POST diagnostics
E. Stores bootstrap programExplanation
ROM in a router maintains instructions for POST diagnostics, which means it holds the necessary instructions for the Power-On Self-Test (POST) process that checks the router's hardware components during startup. Additionally, ROM stores the bootstrap program, which is responsible for initiating the router's operating system. These two functions are essential for the proper functioning and booting of the router.Rate this question:
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- 41.
Which two statements correctly identify the function of router memory components? (Choose two.)
- A.
RAM permanently stores the configuration file used during the boot sequence.
- B.
ROM contains diagnostic self test procedures executed on hardware modules.
- C.
NVRAM stores a backup copy of the IOS used during the boot sequence.
- D.
Flash memory does not lose its contents when a router is powered off.
- E.
Flash contains boot system commands to identify the location of the IOS.
Correct Answer(s)
B. ROM contains diagnostic self test procedures executed on hardware modules.
D. Flash memory does not lose its contents when a router is powered off. -
- 42.
Which router component holds the routing table, ARP cache, and running configuration file?
- A.
RAM
- B.
Flash
- C.
NVRAM
- D.
ROM
Correct Answer
A. RAMExplanation
RAM, or Random Access Memory, is the correct answer because it is a type of computer memory that is used to store data and instructions that are currently being used by the router. It holds the routing table, ARP cache, and running configuration file, which are all essential components for the router's operation. Flash memory is used to store the router's operating system, NVRAM is used to store the startup configuration file, and ROM is a type of memory that stores firmware and bootstrap code.Rate this question:
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- 43.
Refer to the exhibit. A network administrator can ping the Denver router, but gets a 'Password Required but None Set' message when trying to connect remotely via Telnet. Which command or sequence of commands must be applied to the Denver router to allow remote access?
- A.
Router(config)# line console 0 Router(config-line)# login Router(config-line)# password cisco
- B.
Router(config)# line vty 0 4 Router(config-line)# login Router(config-line)# password cisco
- C.
Router(config)# line virtual terminal Router(config-line)# enable login Router(config-line)# password cisco
- D.
Router(config)# line vty 0 4 Router(config-line)# enable secret Router(config-line)# password cisco
- E.
Router(config)# enable secret cisco
Correct Answer
B. Router(config)# line vty 0 4 Router(config-line)# login Router(config-line)# password ciscoExplanation
The correct answer is to apply the commands "Router(config)# line vty 0 4", "Router(config-line)# login", and "Router(config-line)# password cisco". These commands configure the virtual terminal lines on the Denver router to allow remote access. The "line vty 0 4" command specifies the range of virtual terminal lines to be configured, "login" enables login authentication, and "password cisco" sets the password for remote access. This will resolve the issue of getting a 'Password Required but None Set' message when trying to connect remotely via Telnet.Rate this question:
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- 44.
For Reference Only... Choose Answer C...
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. C -
- 45.
Which security method uses the Advanced Encryption Standard (AES)?
- A.
EAP
- B.
TKIP
- C.
WEP
- D.
WPA2
Correct Answer
D. WPA2Explanation
WPA2 is the security method that uses the Advanced Encryption Standard (AES). AES is a symmetric encryption algorithm that is widely used for securing sensitive data. It provides a high level of security and is considered to be one of the most secure encryption algorithms available. WPA2, which stands for Wi-Fi Protected Access 2, is a security protocol used to secure wireless networks. It incorporates AES encryption to ensure the confidentiality and integrity of data transmitted over the network.Rate this question:
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- 46.
What is the purpose of WEP?
- A.
It encrypts data.
- B.
It uniquely identifies a wireless network.
- C.
It coordinates and accepts transmissions from wireless hosts.
- D.
It provides information about a directly connected Cisco network device.
Correct Answer
A. It encrypts data.Explanation
WEP (Wired Equivalent Privacy) is a security protocol used to encrypt data in a wireless network. It provides a level of security by encrypting the data packets transmitted over the network, making it difficult for unauthorized users to intercept and decipher the information. This helps to protect the confidentiality and integrity of the data being transmitted. WEP uses a shared key authentication and RC4 encryption algorithm to provide this encryption. However, it is important to note that WEP has been found to have vulnerabilities and is no longer considered a secure encryption method.Rate this question:
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- 47.
A company has an 802.11b wireless access point installed. Which type of wireless NIC is a valid standards-based one but will not work in this environment?
- A.
802.11a
- B.
802.11b
- C.
802.11g
- D.
802.11n
Correct Answer
A. 802.11aExplanation
The 802.11a wireless NIC is a valid standards-based option, but it will not work in an environment with an 802.11b wireless access point. This is because 802.11a and 802.11b use different frequencies and modulation techniques. 802.11a operates in the 5 GHz frequency range, while 802.11b operates in the 2.4 GHz frequency range. Therefore, the 802.11a NIC will not be able to communicate with the 802.11b access point.Rate this question:
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- 48.
For Reference Only... Choose D...
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
D. D -
- 49.
A company has a sales team that travels with laptops. On Fridays, the sales members come into assigned cubicles and connect their laptop to the wired network. The company is concerned that unauthorized users could also connect to the network. What can be done to ensure that unauthorized laptops are not connected to the wired network?
- A.
Implement SSH.
- B.
Install WEP or WPA.
- C.
Use switch port security.
- D.
Clearly label the cubicle network port and the switch port.
- E.
Configure usernames and passwords on the switch ports assigned to each cubicle.
Correct Answer
C. Use switch port security.Explanation
Switch port security is a feature that can be implemented to ensure that unauthorized laptops are not connected to the wired network. This feature allows the network administrator to specify which devices are allowed to connect to specific switch ports. By configuring switch port security, only authorized devices, such as the laptops of the sales team, will be able to connect to the network through the assigned cubicles. This helps to prevent unauthorized users from accessing the network and ensures the security of the company's data and resources.Rate this question:
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- 50.
Refer to the exhibit. For security reasons, information about the HQ R1 router model and IP address should not be accessible from the Site 2 R2 router. What security measure should be implemented?
- A.
Install an IDS between R1 and R2.
- B.
Install an IPS between R1 and R2.
- C.
Install a firewall between R1 and R2.
- D.
Disable CDP on the R1 interface that connects to R2.
- E.
Disable any routing protocol used between R1 and R2 and install static routes.
Correct Answer
D. Disable CDP on the R1 interface that connects to R2.Explanation
To prevent the Site 2 R2 router from accessing information about the HQ R1 router model and IP address, the security measure that should be implemented is to disable CDP (Cisco Discovery Protocol) on the R1 interface that connects to R2. CDP is a Cisco proprietary protocol used for discovering and sharing information about neighboring devices, including their model and IP address. By disabling CDP on the specific interface, the R2 router will not receive any information about the R1 router, ensuring the desired security.Rate this question:
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Jul 02, 2024Quiz Edited by
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Sep 16, 2014Quiz Created by
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