2.1 - Compare and contrast TCP and UDP ports, protocols and their purposes. Flashcards Preview

Comp TIA A+ 220 1001 Based on Exam Objectives > 2.1 - Compare and contrast TCP and UDP ports, protocols and their purposes. > Flashcards

Flashcards in 2.1 - Compare and contrast TCP and UDP ports, protocols and their purposes. Deck (18)
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1
Q

FTP

A

File transfer protocol.

TCP/20 - Active mode data port.

TCP/21 - Control of communication.

Transfers files between systems.

2
Q

SSH

A

Secure Shell

TCP/22

Encrypted communication link.

Looks and acts the same as Telnet.

3
Q

Telnet

A

Telecommunication network

TCP/23

Login to devices remotely

Console access

No encryption - “In the clear”

4
Q

SMTP

A

Simple Mail Transfer Protocol

TCP/25

Server to server email transfer.

Also used to send mail from a device to a mail server.

5
Q

DNS

A

Domain Name System

UDP/53

Converts names to IP addresses.

Usually multiple DNS servers are in production.

6
Q

HTTP and HTTPS

A

Hyper Text Transfer Protocol (S - Secure)

TCP/80 - HTTP

TCP/443 - HTTPS

Web server Communication with or without encryption.

7
Q

POP and IMAP

A

Post Office Protocol and Internet Message Access Protocol.

TCP/110 - Post office protocol Version 3 (POP3)
-Basic mail transfer functionality.

TCP/143 - Internet Message Access Protocol Version 4 (IMAP4)
-Includes management of email inbox from multiple client.

Receive emails from an email server.
-Authenticate and transfer.

8
Q

RDP

A

Remote Desktop Protocol

TCP/3389

Share a desktop from a remote location.

9
Q

SMB

A

Server Message Block

TCP/445 - Direct communications (NETBIOS-Less)
- Direct SMB communication over TCP without the NetBIOS transport.

Protocol used by Microsoft Windows.
File sharing, Printer Sharing.

Also called CIFS (Common Internet File System)

10
Q

AFP

A

Apple Filing Protocol

TCP/548 - File services in MacOS

File management - Copy, move, delete files etc.
Works in conjunction with SLP (Service Location Protocol).

11
Q

DHCP

A

Dynamic Host Configuration Protocol

UDP/67 , UDP/68

Automated configuration of IP address, subnet mask and other options.

requires a DHCP server.

DORA - Discover, Offer, Request, Acknowledge.

12
Q

LDAP

A

Lightweight Directory Access Protocol

TCP/389

Store and retrieve information in a network directory.

Commonly used in Microsoft Active Directory.

13
Q

SNMP

A

Simple Network Management Protocol

UDP/161 - Queries

UDP/162 - Traps

Version 3 - A secure standard

  • Message integrity
  • Authentication
  • Encryption

Gather statistics from network devices.

14
Q

SLP

A

Service Location Protocol

TCP/427 and UDP/427

Populates the list of available devices.
Works in conjunction with AFP.

15
Q

NetBIOS

A

UDP/137 - Name service.
Register, remove, and find Windows services by name.

UDP/138 - Datagram Service
Windows connectionless data transfer.

TCP/139 - Session Service
Windows connection oriented data transfer.

Allows legacy computer applications relying on the NetBIOS API to be used on modern TCP/IP networks.

16
Q

TCP

A

Transmission Control Protocol

Connection-oriented.
Formal connection setup and close.

“Reliable” delivery.
Error recovery.
Can manage out of order messages or retransmissions.

Flow control.
Receiver can manage how much data is sent.

17
Q

TCP and UDP

A

Protocols both transported inside of IP.

Two ways to move data from A to B.

OSI layer 4 - The transport layer.

Both a form of and use multiplexing.
Use many different applications at the same time.

18
Q

UDP

A

User Datagram Protocol

Connectionless.
No formal open or close to the connection.

“Unreliable” delivery.
No error recovery.
No reordering of data or retransmissions.

No flow control.
Sender determines the amount of data transmitted.

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