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Engineering Sciences (GATE)

Description: COMPUTER NETWORKING Engineering Sciences - XE
Number of Questions: 15
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Tags: COMPUTER NETWORKING Engineering Sciences - XE
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Which of the following statements is/are true about internet?

A. Internet is a group of connected communicating devices. B. Internet is composed of hundreds of thousands of interconnected networks. C. Internet is made of two or more networks that can communicate with each other. D. Internet is made up of many wide and local area networks joined by connecting devices and switching stations.

  1. A and B

  2. B and C

  3. Only B

  4. Only C

  5. Only D

Show answer
Correct Option: D
Explanation:

 Option C is correct.

Which of the following statements is/are correct?

A. NCP is used to connect physical devices to the transmission media. B. NCP is provides communication between hosts. C. NCP serves as the intermediary hardware to transfer data from one network to another. D. NCP is responsible for segmentation, reassembly and error detection.

  1. A and B

  2. B and C

  3. C and D

  4. Only A

  5. Only B

Show answer
Correct Option: D
Explanation:

Option A is wrong.

Which of the following statements is/are incorrect about internet?

A. Internet is made of two or more networks that can communicate with each other. B. Internet is made up of many wide and local area networks joined by connecting devices and switching stations. C. Internet is a group of connected communicating devices. D. Internet is composed of hundreds of thousands of interconnected networks.

  1. A and B

  2. B and C

  3. Only A

  4. Only B

  5. Only D

Show answer
Correct Option: C
Explanation:

Option A is wrong.

Which of the following statements is/are correct?

A. National ISPs at the top of the hierarchy are the ISPs that connect end users to one or more regional ISPs. B. Local ISPs that are connected to one or more regional ISPs are at the second level. C. Local ISPs that provide direct services to the end users can be connected to regional ISPs or directly to national ISPs. D. The top level ISPs that connect nations together are called international ISPs.

  1. A and B

  2. B and C

  3. C and D

  4. Only A

  5. All of the above

Show answer
Correct Option: C
Explanation:

Both are correct.

Which of the following statements is/are true?

A. ARPANET and MILNET are both large area networks of connected computers. B. ARPANET and MILNET are both small networks of connected computers. C. ARPANET is a small network of connected computers, while MILNET is bigger than ARPANET. D. ARPANET is used for nonmilitary users, while MILNET is used for military users.

  1. Only A

  2. Only B

  3. Only C

  4. Only D

  5. All of the above

Show answer
Correct Option: D
Explanation:

 Option D is correct.

Which of the following statements is/are incorrect?

A. A protocol is a set of rules that governs data communication. B. A protocol defines what is communicated, how it is communicated and when it is communicated. C. The key elements of protocols are syntax, encoding, and encryption. D. A protocol specification is usually tested and implemented by several different groups.

  1. A and B

  2. B and C

  3. C and D

  4. Only B

  5. None of these

Show answer
Correct Option: C
Explanation:

Both are wrong.

Which of the following statements is correct?

  1. NIC is responsible for identifying operational problems and proposing solution to these problems.

  2. NIC is responsible for the management of internet domain names and addresses.

  3. NIC is responsible for long term research topics related to internet protocols, applications, architecture and technology.

  4. NIC is responsible for collecting and distributing information about TCP/IP.

  5. NIC is responsible for developing and reviewing specifications intended as internet standards.

Show answer
Correct Option: D
Explanation:

Option 4 is correct.

What is the role of topology in networking?

  1. The topology defines how devices are connected to make a network. The devices can be connected using a mesh topology.

  2. The devices can be connected using a net topology.

  3. The devices can be connected using a star topology.

  4. The devices can be connected using a ring topology.

  5. The devices can be connected using a bus topology.

Show answer
Correct Option: B
Explanation:

Option 2 is wrong.

Which of the following statements is/are incorrect?

  1. The ATM forum promotes the acceptance and use of asynchronous transfer mode (ATM) technology.

  2. The ATM forum is made up of customer premises equipment, vendors and central office providers.

  3. The ATM forum is concerned with the standardisation of services to ensure interoperability.

  4. The ATM forum works with users to test, evaluate and standardise new technologies.

  5. Both (1) and (2)

Show answer
Correct Option: D
Explanation:

Option 4 is wrong.

Which of the following statements is incorrect?

  1. The transmission mode is defined by the transport layer between two devices.

  2. A transmission mode can be simplex, half - duplex or full-duplex.

  3. In a simplex mode, only one device can send and the other can receive.

  4. In a half - duplex mode, two devices can send and receive, but not at the same time.

  5. In a full - duplex mode, two devices can send and receive at the same time.

Show answer
Correct Option: A
Explanation:

Option 1 is wrong.

Which of the following areas do not belong to IETF?

A. Applications B. Internet protocol C. Global overview D. End User specifications E. Network management F. Security

  1. A, B, C

  2. B, C, D

  3. Only C and D

  4. Only D and E

  5. D, E, F

Show answer
Correct Option: C
Explanation:

 Option D is wrong.

Which of the following statements is correct?

A. Both TCP and IP perform the same task and share the common responsibilities. B. TCP is responsible for segmentation, reassembly and error detection, while IP is responsible for datagram routing. C. IP is responsible for segmentation, reassembly and error detection, while TCP is responsible for datagram routing. D. TCP serves as the intermediary hardware to transfer data from one network to another, while IP is responsible for high level functions, such as encapsulation and the data gram.

  1. A

  2. B

  3. C

  4. D

  5. None of these

Show answer
Correct Option: B
Explanation:

 Option B is correct.

Which of the following layers are responsible for flow control and error control in the OSI model?

  1. Application layer and session layer

  2. Presentation layer and physical layer

  3. Network layer and transport layer

  4. Transport layer and session layer

  5. Data link layer and transport layer

Show answer
Correct Option: E
Explanation:

 Option 5 is correct.

Which of the following is not a responsibility of physical layer in the OSI model?

  1. Representation of bit

  2. Data rate

  3. Line configuration

  4. Physical addressing

  5. Physical topology

Show answer
Correct Option: D
Explanation:

 Option 4 is wrong.

What is the role of OSI model?

  1. It covers all aspects of network communications.

  2. It understands and designs network architecture.

  3. It is a layered framework for the design of network systems that allows communication between only two different systems.

  4. It shows how to facilitate communication between two systems with changing the logic of the underlying hardware and software.

  5. It consists of seven related layers with no separation.

Show answer
Correct Option: A
Explanation:

 Option 1 is correct.

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