Computer Knowledge

Computer Networks

2,095 Questions

Computer networks form the backbone of digital communication, connecting multiple devices to share data and resources. This area covers network architectures, transmission media, modems, and topologies like LAN. These concepts are crucial for computer knowledge sections in banking and government exams.

Network topologiesModulation and demodulationNetwork addressingFiber optic cablesWireless infrastructure

Computer Networks Questions

Multiple choice

Expand VPN.

  1. Virtual Primary Network

  2. Visual Primary Network

  3. Virtual Private Network

  4. Visual Private Network
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

VPN stands for Virtual Private Network, which provides a secure and encrypted connection over a public network.

Multiple choice

LAN stands for

  1. Local Access Network

  2. Local Area Network

  3. Localised Area Network

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

LAN is an acronym for Local Area Network, a computer network that interconnects computers within a limited area.

Multiple choice

Which of the following is incorrect about Wi-Fi technology?

  1. Wi-Fi stands for wireless fidelity.

  2. Wi-Fi also refers to an IEEE standard 802.11.

  3. DCF (Distributed Coordination Function) and PCF (Point Coordination Function) are two general types of Wi-Fi transmission.

  4. Wi-Fi uses infrared to transmit and receive data at high speed.

  5. Wi-Fi offers higher peak data rates than do 3G systems.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is a wrong statement about Wi-Fi since Wi-Fi uses radio technologies to transmit and receive data at high speed.

Multiple choice

In the given options, which of the following is not related to Wi-Fi security?

  1. Service Set Identifier (SSID).

  2. Wired Equivalent Privacy (WEP).

  3. IEEE 802.11e

  4. Wireless Protected Access (WPA).

  5. IEEE 802.11i
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

IEEE 802.11e defines a set of Quality of Service enhancements that are of critical importance to applications that cannot tolerate delays, such as streaming multimedia or voice over IP. Hence, it is not related to Wi-Fi security.

Multiple choice

Which of the following statement is incorrect about Infrastructure mode of Wi-Fi?

  1. In Infrastructure mode, all packets go through a base station.

  2. In Infrastructure mode, devices are capable for communicating directly with each other.

  3. In Infrastructure mode, an ESS is identified with an ESSID (Extended Service Set Identifier), a 32-character identifier (in ASCII format) which acts as its name on the network.

  4. In Infrastructure mode, each BSS is identified by a BSSID, a 6-byte (48-bite) identifier.

  5. In Infrastructure mode, Wireless Access Points are usually routers or switches which are connected to the internet by Ethernet port.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is an incorrect statement. Since In Infrastructure mode, devices are connected to wireless network with the help of Access point (AP). In Ad-hoc mode, devices are capable for communicating directly with each other.

Multiple choice

The technology of communication can be divided into ____

  1. data communication

  2. voice communication

  3. fax communication

  4. all the above

  5. none of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Communication technology encompasses various methods of transferring information, including data, voice, and fax transmission.