Computer Knowledge

Computer Networks

2,461 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 security protocol is used to provide secure communication between GPRS devices and the GPRS network?

  1. IPsec

  2. SSL/TLS

  3. IKEv2

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

IPsec (Internet Protocol Security) is the security protocol used to provide secure communication between GPRS devices and the GPRS network. It is a suite of protocols that provides strong security by using a shared secret key.

Multiple choice

Which security mechanism is used to protect the availability of GPRS data traffic?

  1. Load balancing

  2. Failover

  3. Redundancy

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

Load balancing, failover, and redundancy are all security mechanisms used to protect the availability of GPRS data traffic. Load balancing distributes traffic across multiple servers to improve performance and reliability. Failover provides a backup server in case the primary server fails. Redundancy provides multiple copies of data to ensure that it is always available.

Multiple choice

Which of the following is a security protocol used in UMTS to establish a secure connection between a UE and a network?

  1. IPsec

  2. TLS

  3. IKEv2

  4. EAP-AKA
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

EAP-AKA (Extensible Authentication Protocol - Authentication and Key Agreement) is the security protocol used in UMTS to establish a secure connection between a UE and a network. It provides mutual authentication and key agreement between the UE and the network.

Multiple choice

What is the name of the interface between the RNC and the NodeB?

  1. Iub

  2. Iur

  3. S1

  4. S5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The interface between the RNC and the NodeB is called the Iub interface.

Multiple choice

What is the name of the protocol used for signaling between the UE and the NodeB?

  1. UTP

  2. TCP

  3. HTTP

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

The Radio Resource Control (RRC) protocol is used for signaling between the UE and the NodeB.

Multiple choice

What is the name of the protocol used for signaling between the RNC and the SGSN?

  1. UTP

  2. TCP

  3. HTTP

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

The GPRS Tunneling Protocol (GTP) is used for signaling between the RNC and the SGSN.

Multiple choice

What is the name of the protocol used for signaling between the HLR and the SGSN?

  1. UTP

  2. TCP

  3. HTTP

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

The Mobile Application Part (MAP) protocol is used for signaling between the HLR and the SGSN.

Multiple choice

What is the name of the protocol used for signaling between the VLR and the SGSN?

  1. UTP

  2. TCP

  3. HTTP

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

The Service Location Register (SLR) protocol is used for signaling between the VLR and the SGSN.

Multiple choice

What is the name of the protocol used for signaling between the PCRF and the SGSN?

  1. UTP

  2. TCP

  3. HTTP

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

The Gx protocol is used for signaling between the PCRF and the SGSN.

Multiple choice

What is a subnet mask?

  1. A 32-bit number used to divide an IP address into network and host portions

  2. A 32-bit number used to identify a network's subnet

  3. A 32-bit number used to identify a host's IP address

  4. A 32-bit number used to broadcast messages to all hosts on a network
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A subnet mask is a 32-bit number used to divide an IP address into network and host portions. The network portion of the IP address identifies the subnet to which the host belongs, while the host portion identifies the specific host within the subnet.

Multiple choice

What is the difference between a network address and a broadcast address?

  1. The network address is the first IP address in a subnet, while the broadcast address is the last IP address in a subnet

  2. The network address is the IP address of the subnet's gateway, while the broadcast address is the IP address of the subnet's broadcast server

  3. The network address is the IP address of the subnet's DNS server, while the broadcast address is the IP address of the subnet's DHCP server

  4. The network address is the IP address of the subnet's router, while the broadcast address is the IP address of the subnet's switch
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The network address is the first IP address in a subnet, while the broadcast address is the last IP address in a subnet. The network address is used to identify the subnet, while the broadcast address is used to broadcast messages to all hosts on the subnet.

Multiple choice

What is the maximum number of hosts that can be accommodated in a subnet?

  1. 254

  2. 510

  3. 1022

  4. 2046
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The maximum number of hosts that can be accommodated in a subnet is 254. This is because the first and last IP addresses in a subnet are reserved for the network address and the broadcast address, respectively.

Multiple choice

What is the difference between a static IP address and a dynamic IP address?

  1. A static IP address is assigned to a device permanently, while a dynamic IP address is assigned to a device temporarily

  2. A static IP address is assigned by a network administrator, while a dynamic IP address is assigned by a DHCP server

  3. A static IP address is used for devices that need to be accessible from the Internet, while a dynamic IP address is used for devices that do not need to be accessible from the Internet

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

A static IP address is assigned to a device permanently, while a dynamic IP address is assigned to a device temporarily. A static IP address is assigned by a network administrator, while a dynamic IP address is assigned by a DHCP server. A static IP address is used for devices that need to be accessible from the Internet, while a dynamic IP address is used for devices that do not need to be accessible from the Internet.

Multiple choice

What is the purpose of a DHCP server?

  1. To assign IP addresses to devices on a network

  2. To provide Internet access to a network

  3. To route traffic between different subnets

  4. To connect two networks together
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A DHCP server is a device that assigns IP addresses to devices on a network. It provides Internet access to a network by assigning IP addresses to devices that need to access the Internet. It also routes traffic between different subnets.

Multiple choice

What is the purpose of a DNS server?

  1. To translate domain names into IP addresses

  2. To provide Internet access to a network

  3. To route traffic between different subnets

  4. To connect two networks together
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A DNS server is a device that translates domain names into IP addresses. It provides Internet access to a network by allowing devices to access websites by their domain names, rather than their IP addresses.