Computer Knowledge

Computer Networks

2,256 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 different modes of communication and their uses information technology communication systems physics

The setup costs in establishing 

  1. the LAN is more than in WAN

  2. the WAN is more than in LAN

  3. LAN and WAN are same

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

In LAN, If there is a need to set-up a couple of extra devices on the network, it is not very expensive to do that and hence cost associated to setup a LAN is less

For WANs since networks in remote areas have to be connected the set-up costs are higher. 

Multiple choice different modes of communication and their uses information technology communication systems physics

By an intranet we mean

  1. a LAN of an organization

  2. a Wide Area Network connecting all branches of an organization

  3. a corporate computer network

  4. a network connecting all computers of an organization and using the internet protocol
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An intranet is a private network that uses internet protocols (like TCP/IP) and web technologies to share information and resources within an organization, restricted to authorized users.

Multiple choice different modes of communication and their uses information technology communication systems physics

Internet uses 

  1. Packet switching

  2. Circuit switching

  3. Telephone switching

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

Packet-switched describes the type of network in which relatively small units of data called packets are routed through a network based on the destination address contained within each packet. Breaking communication down into packets allows the same data path to be shared among many users in the network. This type of communication between sender and receiver is known as connectionless (rather than dedicated). Most traffic over the Internet uses packet switching and the Internet is basically a connectionless network.

Multiple choice different modes of communication and their uses information technology communication systems physics

What is ISD in telephonic communication ? 

  1. Inter Subscriber Dialing

  2. Inter Secure Dialing

  3. International Subscriber Dialing

  4. Intercom Simple Dialing
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ISD is International Subscriber Dialing . It is placing an international telephone call that is dialed directly by a telephone Subscriber , rather than by a telephone operator .

Calls are initiated by dialing the International call prefix for the originating  country ,followed by the country calling code for the  destination country , and finally the national telephone number of the destination.

Multiple choice different modes of communication and their uses information technology communication systems physics

A local area network is 

  1. a collection of two or more connected computers sharing certain resources in a relatively small geographic location, often in the same building

  2. a collection of more than twenty connected computers sharing certain resources in a relatively small geographic location, often in the same building

  3. a collection of two or more connected computers sharing only system resources in a relatively small geographic location, often in the same building

  4. a collection of two or more connected computers sharing file storage space only in a relatively small geographic location, often in the same building
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A Local Area Network (LAN) is defined by its limited geographic scope, typically confined to a single building or campus, where computers are connected to share resources like files, printers, and internet access.

Multiple choice different modes of communication and their uses information technology communication systems physics

A wide area network is 

  1. a collection of two or more connected computers sharing certain resources in a relatively small geographic location, often in the same building

  2. a collection of two or more LANs sharing certain resources in a relatively small geographic location, often in the same building

  3. a collection of two or more LANs sharing certain resources in a relatively large geographic location, often in the same building

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A WAN consists of two or more LANs. The computers are farther apart and are linked by telephone lines or radio waves. Eg: Internet

Multiple choice social studies importance of transport system importance of transportation system introduction to transport and communication transportation services language, writing and great books

STD and ISD are associated with ___________.

  1. Telephone network

  2. Newspaper network

  3. Computer network

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

STD and ISD are associated with telephone network.

STD: Stands for subscriber trunk dialing. It was called when subscribers used to make long distance calls without operators assistance. But these days we hardly hear this as calling became very easy with introduction of new advanced networks.

ISD: Stands for International subscriber dialing. This term is used when calls are made out of the country.

Multiple choice social studies importance of transport system importance of transportation system introduction to transport and communication transportation services language, writing and great books

The different access methods which permit many satellite users to operate in parallel through a single transponder without interfering with each other as _____.

  1. Frequency Division Multiple Access (FDMA)

  2. Time Division Multiple Access (TDMA)

  3. Code Division Multiple Access (CDMA)

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Frequency Division Multiple Access (FDMA) is one of the most common analogue multiple access methods. The frequency band is divided into channels of equal bandwidth so that each conversation is carried on a different frequency .
  •  Time Division Multiple Access (TDMA)  is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots.The users transmit in rapid succession, one after the other, each using its own time slot.
  • Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel.
Multiple choice

Which network is safer?

  1. Intranet

  2. Internet
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An Intranet is a private network accessible only to an organization's staff, making it inherently safer than the public Internet.

Multiple choice

How far is the coverage area of an INTRANET?

  1. Inside a specific organization

  2. The whole world

  3. Same as internet

  4. Accessing the Universe
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An Intranet is restricted to a specific organization, unlike the Internet, which is global.

Multiple choice

Which one is not the step to setup a network

  1. Choose and Subscribe to ISP

  2. Install modem provided by the ISP

  3. Connect devices to the modem/ router

  4. Install Video Card in the Computer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Installing a video card is a hardware upgrade for graphics processing and is not a step in setting up a network connection.

Multiple choice

(Choose best answer) WAN consists of

  1. Computers

  2. Smartphones

  3. LANs

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

A Wide Area Network (WAN) is a telecommunications network that extends over a large geographical distance, typically connecting multiple Local Area Networks (LANs).