networking Part 1 Flashcards

1
Q

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

A

Network Fundamentals

Node means : Each computer or networked peripherals on the network

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2
Q

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

A

Hardware , Software and People

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3
Q

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

A

IP address

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4
Q

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

A

PAN ( Personal Area network)

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5
Q

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

A

LAN ( Local Area Network)

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6
Q

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

A

MAN ( Metropolitan Area Network)

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7
Q

Extends over a large physical distance ?

A

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

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8
Q

Bandwidth ( Network Speed) ?

A

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

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9
Q

What Bandwidth depends on ?

A

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

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10
Q

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

A

Network Interface Card

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11
Q

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

A

Routers

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12
Q

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

A

Switches and Hubs

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13
Q

Client/server model ?

A

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

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14
Q

Peer to peer model ?

A

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

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15
Q

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

A

NOS (Network Operating System)

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16
Q

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

A

Communication Protocols

17
Q

How does the internet work ?

A

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

18
Q

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

A

Packets such as : An email message

19
Q

Making Connections ?

A

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

20
Q

What is greater bandwidth than modems ?

A

Broadband Connection

21
Q

Types of making connections ?

A

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

22
Q

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

A

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

23
Q

Wireless Technology Standards like ?

A

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

24
Q

Wireless Connections ?

A

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

25
Q

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

A

Wi-Max

26
Q

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

A

Bluetooth

27
Q

Mobile phone Networks ?

A

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)

28
Q

Securing Wireless Networks ?

A

Packets of information on a wireless network are broadcast through airwaves

Anyone with sufficient technical expertise can intercept these signals and decode your messages

29
Q

Measures to help Secure your
communication ?

A

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)