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

What is the purpose of a network mask in an IP address?

  1. To identify the network portion of an IP address

  2. To identify the host portion of an IP address

  3. To provide security to network data

  4. To store network data
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A network mask is used to determine which part of an IP address represents the network address and which part represents the host address, allowing devices to identify the network they belong to.

Multiple choice

Which network protocol is used for sending email messages?

  1. TCP

  2. UDP

  3. HTTP

  4. SMTP
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SMTP (Simple Mail Transfer Protocol) is a network protocol specifically designed for sending email messages between devices on a network, allowing users to send and receive emails.

Multiple choice

Which network protocol is used for browsing the internet?

  1. TCP

  2. UDP

  3. HTTP

  4. FTP
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

HTTP (Hypertext Transfer Protocol) is a network protocol used for transferring web pages and other resources between devices on a network, allowing users to access and browse the internet.

Multiple choice

What is the purpose of a DNS server in a network?

  1. To connect devices to the network

  2. To forward data packets between networks

  3. To provide security to network data

  4. To translate domain names into IP addresses
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A DNS server is responsible for translating domain names, which are human-readable website addresses, into IP addresses, which are numerical addresses used by devices to communicate on a network.

Multiple choice

Which network protocol is used for streaming audio and video content?

  1. TCP

  2. UDP

  3. HTTP

  4. RTP
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

RTP (Real-time Transport Protocol) is a network protocol specifically designed for streaming audio and video content over a network, ensuring smooth and reliable transmission of multimedia data.

Multiple choice

Which protocol is used for signaling in UMTS?

  1. GPRS Tunneling Protocol (GTP)

  2. Internet Protocol (IP)

  3. User Datagram Protocol (UDP)

  4. Transmission Control Protocol (TCP)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

GTP is used for signaling in UMTS. It is a tunnel protocol that encapsulates IP packets and sends them over a GPRS network.

Multiple choice

Which of the following is NOT a common redundancy protocol used in networks?

  1. Hot standby routing protocol (HSRP)

  2. Virtual Router Redundancy Protocol (VRRP)

  3. Gateway Load Balancing Protocol (GLBP)

  4. Transmission Control Protocol (TCP)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Transmission Control Protocol (TCP) is a transport layer protocol, not a redundancy protocol.

Multiple choice

Which of the following is NOT a common type of router redundancy?

  1. Hot standby routing protocol (HSRP)

  2. Virtual Router Redundancy Protocol (VRRP)

  3. Gateway Load Balancing Protocol (GLBP)

  4. Spanning Tree Protocol
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Spanning Tree Protocol is a network protocol that prevents loops in a network, not a type of router redundancy.

Multiple choice

Which of the following is NOT a common spanning tree protocol?

  1. Spanning Tree Protocol (STP)

  2. Rapid Spanning Tree Protocol (RSTP)

  3. Multiple Spanning Tree Protocol (MSTP)

  4. VLAN Trunking Protocol (VTP)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

VLAN Trunking Protocol (VTP) is a protocol used to manage VLANs, not a spanning tree protocol.

Multiple choice

Which protocol is responsible for managing the radio resources and scheduling data transmissions in HSPA networks?

  1. Radio Resource Management (RRM)

  2. Media Access Control (MAC)

  3. Internet Protocol (IP)

  4. Transmission Control Protocol (TCP)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Radio Resource Management (RRM) is the protocol that dynamically allocates radio resources, such as time slots and power levels, to ensure efficient utilization of the network and optimal performance for data transmissions.

Multiple choice

Which protocol is responsible for managing the mobility of mobile devices as they move between different cells in an HSPA network?

  1. Media Access Control (MAC)

  2. Internet Protocol (IP)

  3. Transmission Control Protocol (TCP)

  4. Mobility Management (MM)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mobility Management (MM) is the protocol that handles the mobility of mobile devices in HSPA networks, ensuring seamless handover between cells and maintaining connectivity as devices move.

Multiple choice

Which networking protocol is commonly used for real-time communication in multiplayer games?

  1. TCP (Transmission Control Protocol)

  2. UDP (User Datagram Protocol)

  3. HTTP (Hypertext Transfer Protocol)

  4. FTP (File Transfer Protocol)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

UDP is a connectionless protocol that is often preferred for real-time communication in multiplayer games due to its low overhead and ability to handle data loss, making it suitable for fast-paced and latency-sensitive applications.

Multiple choice

What is the maximum number of hosts that can be accommodated in a network with a subnet mask of 255.255.255.192?

  1. 64

  2. 128

  3. 256

  4. 512
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The number of hosts in a network is determined by subtracting 2 from the number of bits in the host portion of the subnet mask. In this case, the host portion is 8 bits (32 - 24 = 8), so the maximum number of hosts is 2^8 - 2 = 254. However, since the network address and broadcast address also occupy two addresses, the actual number of usable hosts is 254 - 2 = 252.

Multiple choice

Which of the following is a valid IPv4 address?

  1. 192.168.0.256

  2. 255.255.255.255

  3. 10.0.0.1

  4. 172.16.0.1
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A valid IPv4 address consists of four octets, each ranging from 0 to 255. The address 192.168.0.256 is invalid because the fourth octet exceeds 255. The address 255.255.255.255 is the broadcast address and cannot be assigned to a host. The address 172.16.0.1 is invalid because it falls within the reserved range of 172.16.0.0 to 172.31.255.255.

Multiple choice

Which of the following is a valid subnet mask for a network with 24 hosts?

  1. 255.255.255.128

  2. 255.255.255.192

  3. 255.255.255.224

  4. 255.255.255.240
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

To determine the appropriate subnet mask for a network with 24 hosts, we need to calculate the number of bits required for the host portion of the IP address. Since 24 hosts require 5 bits (2^5 = 32), the subnet mask should have 27 bits in the network portion (32 - 5 = 27). The subnet mask 255.255.255.224 has 27 bits in the network portion and 5 bits in the host portion, making it a valid choice.