networking Part 1

Question 1

A computer network is any system of two or
more computers that are linked together is ?

Answer 1

Network Fundamentals

Node means : Each computer or networked peripherals on the network

Question 2

What are the 3 essentials components of every computer network system ?

Answer 2

Hardware , Software and People

Question 3

Every single node in a network has a unique address called ?

Answer 3

IP address

Question 4

A network used for communication between devices close to one person ?
Such as : Connecting a headphone

Answer 4

PAN ( Personal Area network)

Question 5

Is a network were computers are physically close to each other ?
Such as : Home network

Answer 5

LAN ( Local Area Network)

Question 6

Is a large network designed to provide a specific geographical area such as an entire city ?

Answer 6

MAN ( Metropolitan Area Network)

Question 7

Extends over a large physical distance ?

Answer 7

WAN (Wide Area Network) ( internet is the largest )

Question 8

Bandwidth ( Network Speed) ?

Answer 8

Quantity of data transmitted per sec
Measured in Kilobits/sec, Mbps or Gbps

Question 9

What Bandwidth depends on ?

Answer 9

Transmission media like copper wire or fiber optic or Amount of traffic on the network

Question 10

For each node on a network to communicate with other nodes is ?

Answer 10

Network Interface Card

Question 11

Hardware devices or Software programs that route messages as they travel between networks ( connect two or more) is ?

Answer 11

Routers

Question 12

Allow any node on the network to communicate with any other node ?

Answer 12

Switches and Hubs

Question 13

Client/server model ?

Answer 13

One or more computers act as dedicated servers and all the remaining computers act as clients (slow) ( single point of failure)

Question 14

Peer to peer model ?

Answer 14

Every computer on the network is both client and server ( fast) ( no single point of failure)

Question 15

It is a system that is available on servers and handles communication and requests from multiple clients is ?

Answer 15

NOS (Network Operating System)

Question 16

Is a system of rules that allow two or more entities of a communications system to transmit information ( Data exchange) ?

Answer 16

Communication Protocols

Question 17

How does the internet work ?

Answer 17

By TCP/IP :
The most famous protocol for computer networking
which controls the exchange of data between computers on the Internet

Question 18

Information that transmitted over the internet is broken into smaller pieces called ?

Answer 18

Packets such as : An email message

Question 19

Making Connections ?

Answer 19

Modem Connection (Dialup sound) :
It is transmission through Telephone lines Conversion at both ends
Speed: up to 56.6 Kbps

Question 20

What is greater bandwidth than modems ?

Answer 20

Broadband Connection

Question 21

Types of making connections ?

Answer 21

DSL: (digital subscriber line) Uses standard Tel Lines
Cable modems: Uses fast TV cables
Satellite connection: Uses TV dishes
Optical Fiber: Sea cables

Question 22

Is a computer network that uses wireless data
connections between network nodes ?

Answer 22

Wireless Networks
Include:
Wireless Local Area Networks
Cell Phone/Mobile Networks
Wireless Sensor Networks

Question 23

Wireless Technology Standards like ?

Answer 23

Wi-Fi , Wi-Max , Bluetooth and 3G, 4G, 5G

Question 24

Wireless Connections ?

Answer 24

Wi-Fi: Fastest growing Wireless technology standard
Uses radio waves to link computers to Wireless Access Point (WAP)
and allows Peer to peer communication
Affected by : Objects blocking and Antenna placement

Question 25

Is new radio based technology A single tower can provide access to 25 square mile area ?

Answer 25

Wi-Max

Question 26

Is a wireless technology standard for exchanging data between fixed and mobile devices over short distances Designed to quickly and automatically connect devices ?

Answer 26

Bluetooth

Question 27

Mobile phone Networks ?

Answer 27

Tethering: It is a Cabling laptop to a mobile phone to get internet connection Mobile Hotspot: Tethering done over Wi-Fi where the internet-connected mobile device is acting as a portable Wireless Access Point (WAP)

Question 28

Securing Wireless Networks ?

Answer 28

Packets of information on a wireless network are broadcast through airwaves Anyone with sufficient technical expertise can intercept these signals and decode your messages

Question 29

Measures to help Secure your communication ?

Answer 29

Setup a password for your wireless network Use encryption and wireless security protocols Such as : WEP: Wired Equivalent Privacy (Lowest protection) WPA: Wi-Fi Protected Access (Compatible with more devices) WPA2: Wi-Fi Protected Access Version 2 (Most Secure)