Computer Network

Question 1

computer network or data network

Answer 1

a telecommunications network which allows computers to exchange data using a data link

Question 2

fathers of the Internet.

Answer 2

Vint Cerf and Bob Kahn

Question 3

The five components of a computer network are

Answer 3

✓ Sender (Device) 
✓ Sender Equipment (Encoder) 
✓ Communication Channel (Cables, Wireless) 
✓ Receiver Equipment (Decoder) 
✓ Receiver (Device)

Question 4

Sender

Answer 4

Sender is a device that sends a message which can consist of text, numbers, pictures etc.
It is also called source or transmitter.

Question 5

Sender Equipment

Answer 5

The encoder is a device that converts digital signals in a form that can pass through a transmission medium

Question 6

Communication Channel

Answer 6

It is the physical path that connects the sender and the receiver. It is used to transmit data. It is also called Medium. The channel can be a copper wire, a fiber optic cable, microwaves etc

Question 7

Receiving Equipment

The decoder

Answer 7

The decoder is a device that converts the encoded signals into digital form. The receiver can understand the digital form of message

Question 8

Receiver

Answer 8

Receiver is a device that receives the message. It is also called a sink. It must be capable of accepting the message

Question 9

Types of Computer Network

Answer 9

✓ LAN – Local Area Network
✓ MAN – Metropolitan Area Network
✓ WAN – Wide Area Network

Wireless Local Area Network (WLAN):

Storage Area Network (SAN)

Campus Area Network (CAN)

Personal Area Network (PAN)

Question 10

Wireless Local Area Network (WLAN):

Answer 10

wireless network communication

This distribution method uses high-frequency radio waves and often include an access point to the Internet. It is also called Local Area Wireless Network (LAWN)

Question 11

Network Architecture

Answer 11

Peer-to-Peer Architecture

Client/Server Architecture

Question 12

Ethernet

Answer 12

the most widely used LAN technology that defines wiring and signalling standards for the physical layer of TCP/IP

Question 13

Token Ring

Answer 13

local area network topology where nodes are arranged in a ring topology

A token ring topology uses a token to ensure that only one node on the line is used at a time to prevent congestion and collision

Question 14

(FDDI)

Answer 14

Fiber distributed data interface

an optical data communication standard used for long distance networks provides communication with fiber optic lines. This protocol is based on the token ring protocol

Question 15

Network Topology

Answer 15

the arrangement of a network, nodes and connecting lines.

Question 16

types of network topology.

Answer 16

The physical topology and 
the logical (or signal) topology

Question 17

Physical Topology

Answer 17

refers to the geometric layout of the connected network

Question 18

forms of Physical Topology.

Answer 18

Bus Topology, Ring Topology, Tree Topology, Mesh Topology, Star Topology, and Hybrid Topology

Question 19

Bus topology system

Answer 19

every computer and network are connected by using a single cable.
The cable is known as Bus. It transmits the data from one end to another end only in a single direction.
When it has exactly two endpoints, then it is called Linear Bus topology.

(hostel lan, only one to one computer transfer)

Question 20

Ring Topology

Answer 20

network nodes are connected in a closed loop configuration. Each node has directly connected with its adjacent node on both sides. The Others are indirectly connected and the data passing through one or more intermediate nodes

When the transmission is bidirectional by having two connections between each network node, it is called Dual Ring Topology

Question 21

Tree Topology

Answer 21

Two or more-star networks connected with a root node and all other nodes are connected to it forming a hierarchy. It is also called hierarchical topology.

It should at least have three levels to the hierarchy. This type of topology used in Wide Area Network. Tree topology is valued for its scalability and accessibility for troubleshooting.

Question 22

Star Topology

Answer 22

all the nodes are connected to a single hub through a cable. This hub is the central node. The data can send from one node to another through the hub. Hub acts as a repeater for data flow.

Question 23

Mesh Topology

Answer 23

every node carries traffic only between the two nodes it connects (point-to-point connection). Mesh has n(n-1)/2 physical channels to link n devices

Question 24

Logical/Signal Topology

Answer 24

Logical Topology denotes how the signals transmitted from node to node across the system. Broadcast and Token Passing are the two types of Logical topology