Section 10 Chapter 59 - TCP/IP, standard application later protocols Flashcards

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1
Q

Layers of TCP/IP (4)

A
  • Application
  • Transport
  • Network
  • Link
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2
Q

Application layer

A

Selects the protocol for the communication and adds the data to the packet

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3
Q

Transport layer

A

Establishes a connection and splits the data into packets. Adds the port to the packets

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4
Q

Network layer

A

Adds the source and destination ip addresses

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5
Q

Link layer

A

The physical connection. Adds the source and destination MAC addresses to the packet.
note: these are not the original source and final destination addresses but rather the addresses for one specific hop, which there may be many of

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6
Q

MAC address

A

12 digit hex code that uniquely identifies a network device

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7
Q

Socket

A

A IP address and a port. It specifies a device AND application

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8
Q

FTP port

A

20

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9
Q

FPT control instructions port

A

21

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10
Q

SSH port

A

22

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11
Q

Telnet port

A

23

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12
Q

Simple mail transfer protocol port

A

25

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13
Q

HTTP port

A

80 and 8080

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14
Q

POP3 port

A

110

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15
Q

IMAP port

A

143

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16
Q

HTTPS port

A

443

17
Q

What is FTP

A

A protocol for transferring files across a network

18
Q

What is SSH

A

A protocol for remotely accessing and managing a computer

19
Q

How other protocols can be used with SSH

A

A SSH client can make a TCP connection to a remote port and execute commands from other protocols such as GET from HTTP

20
Q

Use of SMTP

A

Transferring outgoing emails and emails from server to server

21
Q

How a sever functions with POP3

A

Will send you the email and then delete it from the server, which is a problem when accessing with multiple devices

22
Q

How a server functions with IMAP

A

Will send you the email but retain a copy on the server

23
Q

Role of a web server

A

Serving up web pages to clients via http

24
Q

Role of browser

A

Retrieves web pages and resources and then renders them