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

Every computer connected to an intranet or extranet must have a distinct _____

  1. firewall

  2. proxy server

  3. IP address

  4. domain name

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Every device on an intranet or extranet must have a unique IP address to be identified and communicate properly. Firewalls protect networks, proxy servers intermediate requests, and domain names provide human-readable addresses, but IP addresses are the fundamental unique identifiers required for network connectivity.

Multiple choice

This is a standard way for a Web server to pass a Web user's request to an application program and to receive data back to forward to the user-

  1. Interrupt request

  2. Forward DNS lookup

  3. Data-Link layer

  4. File Transfer Protocol

  5. Common gateway interface
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

CGI (Common Gateway Interface) is the standard protocol for web servers to communicate with external application programs. It allows the web server to pass user requests to backend programs and return the generated content to the user.

Multiple choice

Which of the following is/are types of server?

  1. DNS

  2. File server

  3. Print

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

DNS is a Domain Name System server that resolves domain names to IP addresses. File servers store and manage files for network users. Print servers manage print jobs and printer access across a network. All three are valid server types.

Multiple choice

File transfer is

  1. an application program

  2. a function of the application layer

  3. a web application

  4. a protocol of the application layer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

FTP i.e file transfer protocol, is used to transfer a file from node to node.

FTP works at OSI layer 7,  i.e. the Application layer.

Multiple choice

What are the necessary steps for VPN connection by Amazon VPC?

  1. Need to specify how to format the returned information that is used to configure the customer gateway.

  2. Use of Internet-routable IP address of the customer gateway's external interface.

  3. Need of Border Gateway Protocol (BGP) Autonomous System Number (ASN) of the customer gateway.

  4. All of the above

  5. Only (1) and (3) are correct
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the statements are correct about VPN connection by Amazon VPC.

Multiple choice

Which of the following is/are not applicable about Classless Inter-Domain Routing (CIDR) in deploying VPC?

  1. CIDR is a methodology of allocating IP addresses and routing Internet Protocol packets.

  2. CIDR is a prior addressing architecture of classful network design in the Internet.

  3. CIDR slows the rapid exhaustion of IPv4 addresses.

  4. CIDR is not suitable for large networks.

  5. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CIDR is suitable for large geographical network specially in the infrastructure domain.

Multiple choice

Which of the following is/are the false statement(s)?

  1. CIDR is an alternative to traditional IP subnetting.

  2. CIDR is also used for supernetting.

  3. CIDR specifies an IP address range using a combination of an IP address and its associated network mask.

  4. None of the above

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

Yes, this is the correct answer, as none of the options is false.

Multiple choice

Which of the following TCP/IP protocol is used for file transfer with minimal capacity and minimal overhead?

  1. RARP (Reverse Address Resolution Protocol)

  2. FTP (File Transfer Protocol)

  3. SNMP (Simple Network Management Protocol)

  4. TFTP (Trivial File Transfer Protocol)

  5. TELNET
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. TFTP is an unreliable TCP/IP protocol for transfer that does not require complex interaction between the client and the server. This protocol transfers files with minimal capacity and minimal overhead.

Multiple choice

Which IP address class is designed for multicast groups?

  1. Class B

  2. Class D

  3. Class A

  4. Class E

  5. Class C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Class D addresses are used for multicast groups (multicasting). The concept of division of octets into network id and host id does not apply to class D. The first four bits of first octet are always set to 1, 1, 1, 0.

Multiple choice

Match the following:

 
List - I
List - II
(a) Physical Layer (1) Allow resource to network access
(b) Data Link Layer (2) Move packet from one destination to other
(c) Network layer (3) Process to process message delivery
(d) Transport Layer (4) Transmission of bit stream
(e) Application Layer (5) Formation of frames

  1. (a) - (4), (b) - (5), (c) - (2), (d) - (3), (e) - (1)

  2. (a) - (5), (b) - (4), (c) - (1), (d) - (2), (e) - (3)

  3. (a) - (1), (b) - (3), (c) - (2), (d) - (5), (e) - (4)

  4. (a) - (1), (b) - (2), (c) - (4), (d) - (3), (e) - (5)

  5. (a) - (2), (b) - (1), (c) - (5), (d) - (3), (e) - (1)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct answer because all the matches are correct.