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Computer Networking MCQs

Study important topics of Computer Networking step by step with our well-organized Networking MCQs at JobExams. These questions cover IP Addressing, OSI Model, TCP/IP, network devices (like routers and switches), types of networks (LAN, WAN, MAN), protocols, and commands like ipconfig and many more. These MCQs are very helpful for IT-related job tests such as PPSC, NTS, FPSC, SPSC, BPSC, CSS, and for students preparing for computer science exams and interviews.

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1 Computer Networking MCQs

What is the main function of the Presentation Layer in the OSI model?

  • Routing and switching
  • Data encryption, compression, and translation
  • Physical signal transmission
  • Error control
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Correct Answer: B. Data encryption, compression, and translation

Explanation: The Presentation Layer is the 6th layer of the OSI (Open Systems Interconnection) Model. Its ... Read More Details

2 Computer Networking MCQs

Which of the following is NOT a function of the Session Layer?

  • Session termination
  • Dialog control
  • Address resolution
  • Synchronization
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Correct Answer: C. Address resolution

Explanation: The Session Layer (Layer 5 of the OSI Model) is responsible for managing communication sessions ... Read More Details

3 Computer Networking MCQs

A "checkpoint" or synchronization point in a session is used to:

  • Start a firewall
  • Save the state of communication
  • Format data
  • Configure routing tables
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Correct Answer: B. Save the state of communication

Explanation: In the Session Layer (Layer 5 of the OSI Model), a checkpoint or synchronization point ... Read More Details

4 Computer Networking MCQs

Which layer ensures two devices can communicate in either half-duplex or full-duplex mode?

  • Application Layer
  • Presentation Layer
  • Transport Layer
  • Session Layer
0 Comments
Correct Answer: D. Session Layer

Explanation: The Session Layer (Layer 5 of the OSI model) is responsible for managing dialogs between ... Read More Details

5 Computer Networking MCQs

What happens if a session is interrupted?

  • It is ignored by the session layer
  • The session layer re-establishes or resumes the session
  • The data is discarded
  • Data is re-routed
0 Comments
Correct Answer: B. The session layer re-establishes or resumes the session

Explanation: If a session is interrupted during communication, the Session Layer (Layer 5 of the OSI ... Read More Details

6 Computer Networking MCQs

Which of the following protocols is associated with the Session Layer?

  • TCP
  • DNS
  • NetBIOS
  • IP
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Correct Answer: C. NetBIOS

Explanation: NetBIOS is a protocol that operates at the Session Layer (Layer 5) of the OSI ... Read More Details

7 Computer Networking MCQs

Which layer is responsible for dialog control in the OSI model?

  • Presentation Layer
  • Session Layer
  • Transport Layer
  • Network Layer
0 Comments
Correct Answer: B. Session Layer

Explanation: The Session Layer is the fifth layer of the OSI (Open Systems Interconnection) model. It ... Read More Details

8 Computer Networking MCQs

What is the main role of the Session Layer in the OSI model?

  • Packet routing
  • Flow control
  • Establish, manage, and terminate sessions
  • Error detection
0 Comments
Correct Answer: C. Establish, manage, and terminate sessions

Explanation: The Session Layer is the fifth layer of the OSI (Open Systems Interconnection) model. Its ... Read More Details

9 Computer Networking MCQs

What does the Transport Layer do if a segment is lost during transmission (in TCP)?

  • Ignores it
  • Replaces it with random data
  • Requests retransmission
  • Forwards to the application layer
0 Comments
Correct Answer: C. Requests retransmission

Explanation: In the Transport Layer of the OSI model, the protocol TCP (Transmission Control Protocol) is ... Read More Details

10 Computer Networking MCQs

Which Transport Layer protocol is best for real-time applications like video streaming?

  • TCP
  • FTP
  • UDP
  • SMTP
0 Comments
Correct Answer: C. UDP

Explanation: UDP (User Datagram Protocol) is the best Transport Layer protocol for real-time applications such as ... Read More Details

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