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Unit 1 - B > Networks > Flashcards

Networks Flashcards

1
Q

What are the different types of networks

A

PAN - personal area network
LAN - local area network
WAN - wide area network
VPN - virtual private network

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2
Q

What are the features and purpose of PAN

A

Wirelessly connected network between an individuals digital devices. Used to sync data across devices for personal or business use

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3
Q

What are the features and purpose of LAN

A

Local network which provides a connection between digital devices over a small area, such as a building or site

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4
Q

What are the features and purpose of WAN

A

Uses telecommunication over a wider area than a LAN, with the potential to connect digital devices around the globe.

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5
Q

What network is usually paid for

A

WAN - it is a subscription that the user pays for

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6
Q

What are the features and purpose of VPN

A

Provides a contingency for business expansion with little distribution. Works by using the internet to securely connect remote digital devices together.

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7
Q

What are the factors affecting the choice of network

A

User experience
User needs
Specifications
Connectivity
Cost
Efficiency
Compatibility

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8
Q

When choosing components what should the user consider

A

Manufacturer
Specification
Warrant
Adherence to standards
Familiarity
Infrastructure

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9
Q

What performance factors should the user consider

A

Available bandwidth & connection methods
Load
Professional level of equipment
Infrastructure

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10
Q

What are protocols

A

Rules that define methods of communicating data between two or more digital devices. They ensure that the transmission of data always follows a set of procedure.

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11
Q

What are the basic communication language of the internet

A

TCP (transmission control protocol)
IP (internet protocol)

They are used together

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12
Q

What is SMTP & what is it used for

A

Used in emails
Simple Mail Transfer Protocol is used to transfer emails between mail servers. It is also used to transfer email from the client software to the outgoing mail sever

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13
Q

What are the protocols that is used in emails

A

SMTP
POP3
IMAP

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14
Q

What is POP3 & what is it used for

A

Used in emails
Post Office Protocol is used to retrieve emails from the mail server, it allows us to download messages to our client software for offline reading

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15
Q

What is IMAP & what is it used for

A

Used in emails
Internet Message Access Protocol is used to retrieve emails from the mail server. Rather than downloading the messages, IMAP syncs them with the mail server

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16
Q

What is H.323 & what is it used for

A

Used for voice & video calls
Defines the rules for communicating audio & video over packet switched networks

17
Q

What is SIP & what is it used for

A

Used for voice & video calls
Session initiation Protocol is used to create, control & end VOIP connections

18
Q

What is RTP & what is it used for

A

Used for voice & video calls
Real Time Transport Protocol is designed to transfer audio & video over IP based networks

19
Q

What are the protocols used in voice & video calls

A

H.323
SIP
RTP

20
Q

What are the protocols used in web pages

A

HTTP
HTTPS
FTP

21
Q

What is HTTP & what is it used for

A

Used in web pages
Hypertext Transfer Protocol is used to allow web servers & browsers to transfer files over the internet. It is how we access the World Wide Web

22
Q

What is HTTPS & what is it used for

A

Used in web pages
The secure version of the standard HTTP. It uses public key cryptography to encrypt communications between a web browser & server

23
Q

What is FTP & what is it used for

A

Used in web pages
File Transfer Protocol is used to transfer files over a network. It is the technology used to upload files to a server as well as to download large files

24
Q

What are the protocols used in security protocols

A

SSL
TLS

25
Q

What is SSL & TLS and what is it used for

A

Used in security protocols
Secure Sockets Layer & Transport Layer Security are used to ensure that transactions over networks are kept safe. SSL is gradually being phased out & replaced with TLS

Unit 1 - B (3 decks)

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