Computer Knowledge

Computer Networks

2,614 Questions

Computer networks involve the architecture, protocols, and security measures used for digital communication. This collection covers OSI model layers, IP addressing, data transmission, and cryptographic standards. These concepts are vital for the computer knowledge sections of banking and government exams.

OSI model layersNetwork protocolsIP subnet maskingData encryption standardsServer configurationsNetwork commands

Computer Networks Questions

Multiple choice

Which of the following security techniques receives protocol data units, interprets them and passes through the same or different protocol data units that achieve either the same result or a modified result?

  1. The Certificate Scheme.

  2. Non repudiation.

  3. Transport layer security.

  4. Stateful inspection firewall.

  5. Guard
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This security technique receives protocol data units, interprets them and passes through the same or different protocol data units that achieve either the same result or a modified result.

Multiple choice

Which of the following is/are false statement(s) about data link layer in OSI model?

  1. It provides services to the network layer.

  2. Logical Link Control layer is responsible for protocols, flow-control and error control.

  3. Acknowledged connection less service in data link layer is appropriate in wireless systems.

  4. None of the above

  5. Both (2) and (3)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the above are true statements about data link layer in OSI model.

Multiple choice

Which of the following is not a service provided by the Session layer in OSI model of networking?

  1. It manages abstract data structures.

  2. It provides dialog control among the machines.

  3. It provides synchronization for networking mediums.

  4. It provides token management for two networking mediums.

  5. It provides a checkpoint for the long operations to continue their transmission from where they were crashed.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Session layer is not responsible for managing abstract data structures, Presentation layer is responsible for managing and exchanging the abstract data structures with the higher-level data structures.

Multiple choice

What is role of proxy server in Burp Suite?

  1. It is used to control the network traffic.

  2. This tool can be used enumerate and mapping the various web applications.

  3. It performs automated attacks on web applications.

  4. All of the above.

  5. Both (1) and (2).
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

These are the correct statements about the Proxy Server.

Multiple choice

Which of the following statements is/are valid to create a server socket?

  1. ServerSocket s1 = new ServerSocket(25);

  2. ServerSocket s1 = new ServerSocket(8000);

  3. ServerSocket s1 = new ServerSocket(80);

  4. Both (1) and (3)

  5. ServerSocket s1 = new ServerSocket(21);
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

To establish a server, you need to create a server socket and attach it to a port, which is where server listens for the connections. The port numbers are ranged from 0 to 65536, but port numbers 0 to 1024 are reserved for privileged services.The syntax to create a server socket is: ServerSocket objectname = new ServerSocket(port);

Multiple choice

Which of the following is NOT a server based network features?

  1. File server

  2. DNS

  3. Print server

  4. All are server types
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

File servers, DNS servers, and Print servers are all standard server types in network environments. Therefore, option D ('All are server types') is correct when asked which is NOT 'a' server feature - meaning all listed options are valid server types.

Multiple choice

Which layer provides the functional and procedural means to transfer data between network entities and to detect and possibly correct errors that may occur in the Physical layer?

  1. Network layer

  2. Data link layer

  3. Transport layer

  4. Session layer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Data link layer provides the functional and procedural means to transfer data between network entities and to detect and possibly correct errors that may occur in the Physical layer.