1.
An IP Address (or IPV4 number) is a set of four numbers each within what range?
Correct Answer
B. 0 To 255
Explanation
An IP address (or IPV4 number) is a set of four numbers, each ranging from 0 to 255. This is because an IP address is a 32-bit number, divided into four octets, and each octet can have a value from 0 to 255. This range allows for a total of 4,294,967,296 unique IP addresses to be assigned.
2.
What kind of technology do wireless networks use in order to send information?
Correct Answer
A. Radio Waves
Explanation
Wireless networks use radio waves to send information. Radio waves are electromagnetic waves that have long wavelengths and low frequencies. They are able to carry signals over long distances and can easily penetrate through walls and other obstacles. This makes radio waves the ideal technology for wireless communication, allowing devices to connect to the internet and transmit data without the need for physical cables.
3.
What is the default SMTP (outgoing) server port number?
Correct Answer
C. 25
Explanation
The default SMTP (outgoing) server port number is 25. SMTP stands for Simple Mail Transfer Protocol and it is used for sending emails. Port 25 is the standard port used by SMTP servers for outgoing mail.
4.
What is the default POP3 (incoming) port number?
Correct Answer
B. 110
Explanation
The default POP3 (incoming) port number is 110. This is the port number that is commonly used for receiving email messages from a mail server using the POP3 protocol.
5.
Which are the basic protocol intranets use?
Correct Answer
D. TCP/IP
Explanation
Intranets use the TCP/IP protocol as a basic protocol. TCP/IP is a suite of communication protocols that enables the transfer of data over networks. It is widely used in both local area networks (LANs) and wide area networks (WANs). TCP/IP provides reliable and efficient data transmission by breaking data into packets and ensuring their delivery to the intended destination. It also includes protocols like IP (Internet Protocol) for addressing and routing, and TCP (Transmission Control Protocol) for establishing and maintaining connections between devices. Overall, TCP/IP is the fundamental protocol used in intranets for seamless communication and data transfer.
6.
What mail protocol allows a computer to work with mail directly on the server?
Correct Answer
B. IMAP
Explanation
IMAP (Internet Message Access Protocol) is a mail protocol that allows a computer to work with mail directly on the server. Unlike POP3 (Post Office Protocol version 3), which downloads emails to the device and removes them from the server, IMAP keeps the emails on the server and allows users to access and manage them from multiple devices. This makes it convenient for users who access their emails from different devices as they can synchronize their mailbox and have consistent access to their emails. SMTP (Simple Mail Transfer Protocol) is used for sending emails, while HTTP (Hypertext Transfer Protocol) is used for web browsing.
7.
What address do manufacturers of network adapters burn into their products, in order to uniquely identify them?
Correct Answer
D. MAC address
Explanation
Manufacturers of network adapters burn the MAC address into their products in order to uniquely identify them. The MAC address, also known as the Media Access Control address, is a unique identifier assigned to network interfaces. It is a hardware address that is permanently assigned to the network adapter during manufacturing. This address is used by the network devices to communicate with each other on a local network. Unlike IP addresses, which can change, the MAC address remains constant and helps in ensuring the proper delivery of data packets within a network.
8.
What servers provide network firewall, connection sharing, and caching technology for networks?
Correct Answer
B. Proxy Servers
Explanation
Proxy servers provide network firewall, connection sharing, and caching technology for networks. A proxy server acts as an intermediary between clients and other servers. It can filter and block certain types of network traffic, providing a firewall to protect the network. It can also share internet connections among multiple devices, allowing them to access the internet through a single connection. Additionally, proxy servers can cache frequently accessed web content, reducing bandwidth usage and improving network performance. Therefore, proxy servers are the correct answer for this question.
9.
What value could be expressed in bits per second?
Correct Answer
D. Bandwidth
Explanation
Bandwidth is the measure of the amount of data that can be transmitted over a network connection in a given amount of time. It is commonly expressed in bits per second (bps). Therefore, bandwidth is the value that can be expressed in bits per second. Time To Live, File Size, and Last Update Time are not typically measured in bits per second.
10.
How many times faster is Fast Ethernet than standard Ethernet?
Correct Answer
B. 10 Times
Explanation
Fast Ethernet is 10 times faster than standard Ethernet. This means that the data transfer rate of Fast Ethernet is 10 times higher than that of standard Ethernet. This increase in speed allows for faster and more efficient communication and data transmission between devices on a network.
11.
What is the term defining a malicious attempt to render a networked system unusable?
Correct Answer
B. DoS
Explanation
A Denial of Service (DoS) attack is a malicious attempt to render a networked system unusable. This is typically achieved by overwhelming the targeted system with a flood of illegitimate requests or by exploiting vulnerabilities to exhaust its resources. The goal of a DoS attack is to disrupt the normal functioning of the system, making it unable to respond to legitimate users or perform its intended functions.
12.
What does the acronym NOS stand for?
Correct Answer
D. Network Operating System
Explanation
The acronym NOS stands for Network Operating System. This refers to a specialized software that manages and controls network resources, allowing multiple computers to communicate and share data. NOS provides services such as file sharing, printer sharing, and security protocols, enabling efficient network management and operation.
13.
What does the acronym ARP stand for?
Correct Answer
A. Address Resolution Protocol
Explanation
The correct answer is Address Resolution Protocol. ARP is a protocol used to map an IP address to a physical or MAC address on a local network. It allows devices to communicate with each other by resolving the IP address of a destination device to its corresponding MAC address. This is necessary because devices on a network communicate at the MAC address level, and ARP helps in identifying the MAC address of a device based on its IP address.
14.
How many wire pairs does CAT5 twisted pair cable contain?
Correct Answer
A. Four
Explanation
CAT5 twisted pair cable contains four wire pairs.
15.
What does PPP stand for?
Correct Answer
B. Point-to-Point Protocol
Explanation
PPP stands for Point-to-Point Protocol. This protocol is used to establish a direct connection between two network nodes, typically over a serial interface. It is commonly used in dial-up connections and is responsible for establishing and maintaining the link between the sender and receiver. The other options, Peer-to-Point Protocol and Peer-to-Peer Protocol, do not accurately represent the correct acronym for PPP.