Tcpip Introduction Practice Test
By IMS Asia (https://www. Imsasia. Com)
- 1.
At what layer of the OSI model would a ROUTER operate at?
- A.
Presentation
- B.
Session
- C.
Transport
- D.
Network
- E.
Datalink
- F.
Physical
Correct Answer
D. NetworkExplanation
Router operates on the Network Layer of the OSI model.Rate this question:
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- 2.
At what layer of the OSI model would a BRIDGE operate at?
- A.
Presentation
- B.
Session
- C.
Transport
- D.
Network
- E.
Datalink
- F.
Physical
Correct Answer
E. DatalinkExplanation
Bridge operates at the Datalink layer of the OSI model. Bridge makes it routing decisions based on the MAC address.Rate this question:
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- 3.
At what layer of the OSI model would a REPEATER operate at?
- A.
Presentation
- B.
Session
- C.
Transport
- D.
Network
- E.
Datalink
- F.
Physical
Correct Answer
F. pHysicalExplanation
Repeater operates at the Physical Layer.Rate this question:
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- 4.
Which of the following Protocols operate on the Transport layer?
- A.
SAP
- B.
NCP
- C.
TCP
- D.
IP
- E.
UDP
- F.
IPX
- G.
SPX
Correct Answer(s)
C. TCP
E. UDP
G. SPXExplanation
TCP,UDP, and NetWare’s SPX operate on the Transport layer.Rate this question:
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- 5.
Which of the following Protocols operate on the Network layer?
- A.
SAP
- B.
NCP
- C.
TCP
- D.
IP
- E.
ICMP
- F.
IPX
- G.
SPX
Correct Answer(s)
D. IP
E. ICMP
F. IPXExplanation
IP, ICMP and NetWare's IPX operate on the Network layer.Rate this question:
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- 6.
Which of the following Protocols operate on the Application and Presentation layer?
- A.
SAP
- B.
NCP
- C.
TCP
- D.
IP
- E.
IGB
- F.
IPX
- G.
BBC
Correct Answer(s)
A. SAP
B. NCPExplanation
SAP and NCP are application and presentation layer protocols.Rate this question:
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- 7.
What layer of the OSI model ensures that packets sent are delivered error free, in the correct sequence and without losses in transit?
- A.
Network
- B.
Transport
- C.
Data Link
- D.
Physical
- E.
Session
Correct Answer
B. TransportExplanation
Transport Layer is responsible for error-free delivery, and for assembling packets in correct sequence.Rate this question:
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- 8.
At which layers of the OSI model do BROUTERS operate at?
- A.
Physical
- B.
Data link
- C.
Network
- D.
Transport
- E.
Session
- F.
Presentation
Correct Answer(s)
B. Data link
C. NetworkExplanation
Brouter is a combination of Bridge and a router. Brouters operate at Datalink and Network Layers of the OSI model.Rate this question:
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- 9.
At which layer of the OSI model determines which path data sent should use based on the available network conditions and priority of service?
- A.
Network
- B.
Transport
- C.
Datalink
- D.
Session
Correct Answer
A. NetworkExplanation
Addressing and routing takes place at the Network layer of the OSI model.Rate this question:
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- 10.
The OSI model of the Datalink layer does which of the following?
- A.
Includes the MAC sublayer
- B.
Includes LLC sublayer
- C.
Provides data encryption services
- D.
Bridges and switches operate at this layer
- E.
Packages bits from the Physical layer into frames for the Network layer
- F.
Responsible for IP addressing
Correct Answer(s)
A. Includes the MAC sublayer
B. Includes LLC sublayer
D. Bridges and switches operate at this layer
E. Packages bits from the pHysical layer into frames for the Network layerExplanation
Datalink layer includes Logical Link Control (LLC) sublayer and MAC sublayer. It is responsible for converting bits into frames. Bridges and Switches operate at Datalink layer.Rate this question:
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- 11.
What layer of the OSI model is responsible for the physical addressing?
- A.
Physical
- B.
Datalink
- C.
Network
- D.
Session
Correct Answer
B. DatalinkExplanation
Datalink layer is responsible for the physical addressing and Network layer is responsible for the logical or Network addressing.Rate this question:
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- 12.
Email and FTP work at which layer of the OSI model?
- A.
Network
- B.
Transport
- C.
Session
- D.
Datalink
- E.
Application
Correct Answer
E. ApplicationExplanation
Email and FTP function at the Application layer. Telnet and WWW also function at the Application layer.Rate this question:
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- 13.
Compression takes place at what layer of the OSI model?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
- E.
Network
- F.
Datalink
- G.
Physical
Correct Answer
B. PresentationExplanation
Compression takes place at the Presentation layer. Presentation layer is also responsible for encryption. Redirector works at this layer.Rate this question:
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- 14.
At what layer of the OSI model does network redirector operates?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
- E.
Network
- F.
Datalink
- G.
Physical
Correct Answer
B. PresentationExplanation
Redirector operates at the Presentation layer of the OSI model. Presentation layer is also responsible for compression and encryption.Rate this question:
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- 15.
What 2 OSI layers are above and beneath the Network layer? (Choose 2)
- A.
Presentation
- B.
Network
- C.
Session
- D.
Transport
- E.
Application
- F.
Datalink
- G.
Physical
Correct Answer(s)
D. Transport
F. DatalinkExplanation
The order of OSI layers is: Physical, Datalink, Network, Transport, Session, Presentation, and Application.Rate this question:
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- 16.
Which services/protocols below operate on the Application layer?
- A.
HTTP
- B.
RPC
- C.
SQL
- D.
SNMP
- E.
ASCII
- F.
X.400
Correct Answer(s)
A. HTTP
E. ASCII
F. X.400Explanation
HTTP, SNMP and X.400 mail are application layer services. Some other application layer services and protocols are: Telnet, FTP, WWW browsers, NFS, SMPT gateways.Rate this question:
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- 17.
Which services/protocols below operate on the Presentation layer?
- A.
HTTP
- B.
RPC
- C.
SQL
- D.
Encryption
- E.
ASCII
- F.
X.400
Correct Answer(s)
D. Encryption
E. ASCIIExplanation
Encryption, ASCII and MPEG are presentation layer services. Some other presentation layer services are: JPEG, TIFF, GIF, PICT, and MIDI. The SQL and RPC operate on the session layer.Rate this question:
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- 18.
Active HUBs operate at which layer of the OSI model?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
- E.
Network
- F.
Datalink
- G.
Physical
Correct Answer
G. pHysicalExplanation
Hubs (Both active and passive) operate at the Physical layer of the OSI model. Repeaters and Repeaters, Amplifiers and transceivers also operate at physical layer.Rate this question:
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- 19.
Which OSI layers map to the Network access layer of the DOD model?
- A.
Physical
- B.
Data Link
- C.
Network
- D.
Transport
- E.
Session
Correct Answer(s)
A. pHysical
B. Data LinkExplanation
DOD model has 4 layers: Network access layer maps to Datalink and Physical layers of the OSI model; Internet layer maps to Network layer of OSI; Host-to-Host layer maps to Transport layer; Process/Application maps to Application, Presentation and Session layers of the OSI model.Rate this question:
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- 20.
What does the acronym OSI represent?
- A.
Open Serial Interconnection
- B.
Open Serial International
- C.
Open Systems Interconnection
- D.
Open Systems International
Correct Answer
C. Open Systems InterconnectionExplanation
OSI stands for Open System Interconnection and is just a model.Rate this question:
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- 21.
Which OSI layer defines MediaPlayer standard?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
Correct Answer
B. PresentationExplanation
Presentation layer is responsible for ASCII, JPEG, MPEG, Graphics, images, multimedia, compression and encryption.Rate this question:
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- 22.
Which OSI layer uses data segments?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
Correct Answer
D. TransportExplanation
Transport layer is responsible for Error-free delivery, Segment data, reassemble data, sequencing.Rate this question:
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- 23.
Which OSI layer uses ports and sockets?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
Correct Answer
D. TransportExplanation
Port numbers are also known as TCP port numbers. TCP functions on the Transport layer of the OSI model.Rate this question:
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- 24.
Musical Instrument Digital Interface (MIDI) standard is used for digital music. Which OSI layer does this standard belong to?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Data-Link
Correct Answer
B. PresentationExplanation
Presentation layer is responsible for ASCII, JPEG, MPEG, Graphics, images, multimedia, compression and encryption.Rate this question:
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- 25.
Presentation layer of the OSI model is responsible for what services?
- A.
MIDI
- B.
JPEG
- C.
ASCII
- D.
Quick Time
- E.
TIFF
Correct Answer(s)
A. MIDI
B. JPEG
C. ASCII
D. Quick Time
E. TIFFExplanation
All of these services function at the Presentation layer. Presentation layer is responsible for ASCII, JPEG, MPEG, Graphics, images, multimedia, compression and encryption.Rate this question:
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- 26.
Which of the following are NOT layers of the OSI model?
- A.
Physical
- B.
Network
- C.
Media
- D.
Application
- E.
Presentation
- F.
System
Correct Answer(s)
C. Media
F. SystemExplanation
There are 7 layers in the OSI model: Physical, Data link, Network, Transport, Session, Presentation, and Application.Rate this question:
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- 27.
What OSI layer is responsible for converting bits into frames?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Network
- E.
Datalink
- F.
Transport
Correct Answer
E. DatalinkExplanation
Datalink layer is responsible for converting bits of data into frames. This layer is also responsible for MAC or Physical addressing. CRC (Cyclic redundancy check) is added at this layer.Rate this question:
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- 28.
Routing of IP is a function of which OSI layer?
- A.
Session
- B.
Transport
- C.
Network
- D.
Datalink
- E.
Physical
Correct Answer
C. NetworkExplanation
Network layer is responsible for Logical addressing, routing of message, determining the best route.Rate this question:
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- 29.
TCP protocol operates at which layer of the OSI model?
- A.
Session
- B.
Transport
- C.
Network
- D.
Datalink
- E.
Physical
Correct Answer
B. TransportExplanation
TCP is the transport protocol and operates at the transport layer. UDP also operates at this layer.Rate this question:
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- 30.
Do the UDP and TCP protocols operate at the same layer of the OSI model?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
This is true. UDP and TCP both operate at the Transport layer of the OSI model. The difference between these protocols is that TCP is connection-oriented and UDP is connectionless.Rate this question:
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- 31.
UDP operates at what layer of OSI model?
- A.
Session
- B.
Transport
- C.
Network
- D.
Datalink
- E.
Physical
Correct Answer
B. TransportExplanation
UDP and TCP both operate at the Transport layer of the OSI model.Rate this question:
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- 32.
Telnet operates at what layer of the OSI model?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Network
- E.
Datalink
- F.
Transport
Correct Answer
A. ApplicationExplanation
Telnet, WWW and FTP function at the Application layer of the OSI model.Rate this question:
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- 33.
FTP operates at what layer of the OSI model?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Network
- E.
Datalink
- F.
Transport
Correct Answer
A. ApplicationExplanation
Telnet, WWW and FTP function at the Application layer of the OSI model.Rate this question:
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- 34.
Which layer does the Data Link use to locate hosts on the network?
- A.
Port numbers
- B.
MAC addresses
- C.
Gateways
- D.
Network addresses
Correct Answer
B. MAC addressesExplanation
Datalink Layer uses Hardware or MAC addresses. Network Layer uses Logical network addresses.Rate this question:
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- 35.
Which organizations have developed the OSI model?
- A.
ANSI
- B.
IEEE
- C.
CCITT
- D.
ISO
- E.
UNCA
Correct Answer(s)
A. ANSI
D. ISOExplanation
The International Standards Organization (ISO) based in Geneva, Switzerland, and American National Standards Institute (ANSI) has developed the OSI model in 1974 in an effort to standardize network architecture.Rate this question:
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- 36.
Which layer of the OSI model is responsible for translation of data?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
- E.
Data Link
Correct Answer
B. PresentationExplanation
Data translation is done at the Presentation layer. By providing translation services, the Presentation layer ensures that data transferred from the Application layer of one system can be read by the Application layer of another host.Rate this question:
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- 37.
How many layers are in the OSI model?
- A.
4
- B.
5
- C.
6
- D.
7
- E.
8
Correct Answer
D. 7Explanation
There are 7 layers in the OSI model: Physical, Data link, Network, Transport, Session, Presentation, and Application.Rate this question:
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- 38.
How many layers are in the DOD model?
- A.
4
- B.
5
- C.
6
- D.
7
- E.
8
Correct Answer
A. 4Explanation
There are 4 layers in the DOD model: Network Access, Internet, Host-to-Host, and Process/Application.Rate this question:
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- 39.
At which layer of the OSI model does SNMP operate?
- A.
Application
- B.
Presentation
- C.
Session
- D.
Transport
- E.
Data Link
Correct Answer
A. ApplicationExplanation
SNMP operates at the Application layer of the OSI model. The following protocols and services are also operate at the Application layer: Telnet, HTTP, FTP, WWW browsers, NFS, SMTP gateways, X.400 mail.Rate this question:
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- 40.
At which layer of the OSI model does NetBIOS operate?
- A.
Session
- B.
Transport
- C.
Network
- D.
Datalink
- E.
Physical
Correct Answer
A. SessionExplanation
NetBIOS operates at the Session Layer of the OSI model.Rate this question:
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- 41.
At which layer of the OSI model does Frame Relay operate?
- A.
Session
- B.
Transport
- C.
Network
- D.
Data Link
- E.
Physical
Correct Answer
D. Data LinkExplanation
Frame Relay operates at the Data Link layer.Rate this question:
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- 42.
Which protocols and services are associated with the Transport layer?
- A.
Logical addressing
- B.
Determining the best route
- C.
Sequencing
- D.
Sliding window
- E.
Compression
- F.
Reassembling of data
- G.
UDP
- H.
H. Flow control
- I.
FTP
Correct Answer(s)
C. Sequencing
D. Sliding window
F. Reassembling of data
G. UDP
H. H. Flow controlExplanation
Transport layer is responsible for sequencing of packets in correct order, windowing, determining availability of communication, flow control, acknowledgement. TCP and UDP operate at this Layer.Rate this question:
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- 43.
Which services and protocols are associated with the Application layer?
- A.
Logical addressing
- B.
Compression
- C.
Telnet
- D.
FTP
- E.
Encryption
- F.
SQL
- G.
WWW
- H.
SNMP
- I.
JPEG
Correct Answer(s)
C. Telnet
D. FTP
G. WWW
H. SNMPExplanation
Application layer is responsible for interface between the computer and the user. Protocols that operate at this layer are: WWW, Telnet, FTP, SNMP, HTTP, MIME.Rate this question:
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- 44.
What is a function of a reliable transport layer connection?
- A.
Route selection
- B.
Acknowledgments
- C.
Session checkpoints
- D.
System authentication
Correct Answer
B. AcknowledgmentsExplanation
According to Cisco: Some transport-layer implementations include Transmission Control Protocol, Name Binding Protocol, and OSI transport protocols. Transmission Control Protocol (TCP) is the protocol in the TCP/IP suite that provides reliable transmission of data. Name Binding Protocol (NBP) is the protocol that associates AppleTalk names with addresses. OSI transport protocols are a series of transport protocols in the OSI protocol suite.Rate this question:
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- 45.
Which of the following OSI layers is responsible for windowing?
- A.
Data Link
- B.
Network
- C.
Presentation
- D.
Session
- E.
Transport
Correct Answer
E. TransportExplanation
According to Cisco: The transport layer implements reliable internetwork data transport services that are transparent to upper layers. Transport-layer functions typically include flow control, multiplexing, virtual circuit management, and error checking and recovery. Flow control manages data transmission between devices so that the transmitting device does not send more data than the receiving device can process. Multiplexing enables data from several applications to be transmitted onto a single physical link. Virtual circuits are established, maintained, and terminated by the transport layer. Error checking involves creating various mechanisms for detecting transmission errors, while error recovery involves taking an action, such as requesting that data be retransmitted, to resolve any errors that occur.Rate this question:
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- 46.
Which services and protocols are associated with the Presentation layer?
- A.
Redirector
- B.
Compression
- C.
Telnet
- D.
FTP
- E.
Encryption
- F.
SQL
- G.
WWW
- H.
SNMP
- I.
JPEG
Correct Answer(s)
A. Redirector
B. Compression
E. Encryption
I. JPEGExplanation
Presentation layer is responsible for translating data into understandable format for transmission. Data compression and encryption takes place at this layer. Redirector works at this layer. MIDI, JPEG, ASCII and multimedia are associated with Presentation layer.Rate this question:
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- 47.
How many layers are in the TCP/IP model?
- A.
4 layers
- B.
5 layers
- C.
6 layers
- D.
7 layers
Correct Answer
A. 4 layersExplanation
The Department of Defense TCP/IP model is based on 4 layers.Rate this question:
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- 48.
Which of the following two are valid unicast MAC addresses
- A.
00 00 0c 35 2f 1C
- B.
00 00 0g 35 2f 1C
- C.
01 00 00 0h 22 27
- D.
01 00 00 0c 22 27
- E.
00 00 C0 0i 3b 14
- F.
00 00 C0 0e 2b 14
Correct Answer(s)
A. 00 00 0c 35 2f 1C
C. 01 00 00 0h 22 27Explanation
The first byte of a unicast addresses is always an even value and those with an odd value are multicast addresses. MAC addresses are displayed in hex of which "f" is the highest legal value.Rate this question:
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- 49.
Which of the following is a broadcast MAC address?
- A.
255.255.255.255
- B.
127.0.0.1
- C.
FF FF FF FF FF FF
- D.
00 00 00 00 00 00
Correct Answer
C. FF FF FF FF FF FFExplanation
Broadcast MAC addresses are displayed as ff ff ff ff ff ff.Rate this question:
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- 50.
Which two devices operate at the network interface layer of the TCP/IP model?
- A.
Router
- B.
Firewall
- C.
PBX
- D.
Switch
- E.
Hub
Correct Answer(s)
D. Switch
E. HubExplanation
The network interface layer of the TCP/IP model is equivalent to layers one and two of the OSI.Rate this question:
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Mar 22, 2023Quiz Edited by
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Mar 09, 2011Quiz Created by
Apalani
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