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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

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

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

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

2 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
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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

3 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
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Correct Answer: C. Requests retransmission

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

4 Computer Networking MCQs

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

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

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

5 Computer Networking MCQs

Which of the following ensures that data segments are delivered in order?

  • UDP
  • TCP
  • IP
  • ARP
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Correct Answer: B. TCP

Explanation: TCP (Transmission Control Protocol) is responsible for making sure that data segments are delivered in ... Read More Details

6 Computer Networking MCQs

What is used at the Transport Layer to uniquely identify applications on a host?

  • IP Address
  • MAC Address
  • Port Number
  • DNS Name
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Correct Answer: C. Port Number

Explanation: The Transport Layer uses a unique number called a Port Number to identify applications on ... Read More Details

7 Computer Networking MCQs

Which mechanism does the Transport Layer use to prevent data overflow at the receiver’s end?

  • Routing
  • Buffering
  • Flow control
  • CRC
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Correct Answer: C. Flow control

Explanation: The Transport Layer uses a technique called flow control to prevent the receiver from getting ... Read More Details

8 Computer Networking MCQs

What is a key feature of UDP in the Transport Layer?

  • Reliable delivery
  • Acknowledgments
  • Low overhead and no connection
  • Sequence numbers
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Correct Answer: C. Low overhead and no connection

Explanation: UDP (User Datagram Protocol) is a key protocol in the Transport Layer of the OSI ... Read More Details

9 Computer Networking MCQs

Which two protocols operate at the Transport Layer?

  • IP and ICMP
  • TCP and UDP
  • ARP and RARP
  • HTTP and HTTPS
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Correct Answer: B. TCP and UDP

Explanation: At the Transport Layer of the OSI model, the two most widely used protocols are ... Read More Details

10 Computer Networking MCQs

What is the function of TCP in the Transport Layer?

  • Provides connectionless communication
  • Provides unreliable transmission
  • Provides reliable, connection-oriented communication
  • Converts IP to MAC address
0 Comments
Correct Answer: C. Provides reliable, connection-oriented communication

Explanation: TCP (Transmission Control Protocol) is a key protocol at the Transport Layer of the OSI ... Read More Details

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