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Josh's CompTIA A+ > ports > Flashcards

ports Flashcards

1
Q

What does POP stand for? What is it?

A

Post Office Protocol

a protocol for receiving email by downloading it to your computer from a mailbox on the server of an internet service provider.

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2
Q

what port is used for POP3?

A

TCP 110

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3
Q

What does IMAP4 stand for?

A

Internet Message Access Protocol Version 4 (IMAP4)

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4
Q

What is IMAP used for?

A

Internet Message Access Protocol (IMAP) is an Internet standard protocol used by email clients to retrieve email messages from a mail server over a TCP/IP connection.

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5
Q

what port is used for IMAP?

A

TCP 143

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6
Q

What is Telnet?

A

Telnet is an application protocol used on the Internet or local area network to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP).

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7
Q

what port is used for Telnet?

A

TCP 23

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8
Q

What does RDP stand for?

A

Remote Desktop Protocol

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9
Q

What port is used for RDP?

A

TCP 3389

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10
Q

What is port TCP 3389 used for?

A

RDP - Remote Desktop Protocol

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11
Q

What is the TCP 110 port used for?

A

POP3

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12
Q

What is port TCP 143 used for?

A

IMAP - Internet Message Access Protocol

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13
Q

What is port TCP 23 used for?

A

Telnet

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14
Q

What is SMB?

A

Server Message Block

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

Also called CIFS (Common Internet File System)

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15
Q

What port is reserved for SMB?

A

TCP 445

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16
Q

What is port TCP 445 reserved for?

A

SMB - Server Message Block

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

Also called CIFS (Common Internet File System)

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17
Q

What is AFP?

A

Apple Filing Protocol - File services in MacOS

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

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18
Q

what port is reserved for AFP?

A

TCP 548

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19
Q

What is the TCP 548 port reserved for?

A

Apple Filing Protocol - File services in MacOS

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20
Q

What is DHCP?

A

Dynamic Host Configuration Protocol.

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

21
Q

What port is reserved for DHCP?

A

The DHCP server uses UDP ports 67 and 68. The port number 68 is used for the DHCP client and 67 is used for the DHCP server.

22
Q

what is the UDP 67 port reserved for?

A

DHCP - Dynamic Host Configuration Protocol

23
Q

What is the UDP 68 port reserved for?

A

DHCP - Dynamic Host Configuration Protocol

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

24
Q

What is LDAP?

A

Lightweight Directory Access Protocol

Store and retrieve information in a network directory.

Commonly used in Microsoft Active Directory.

25
Q

what port is reserved for LDAP?

A

TCP 389

26
Q

what is the TCP 389 port reserved for?

A

LDAP - Lightweight Directory Access Protocol

Store and retrieve information in a network directory.

Commonly used in Microsoft Active Directory.

27
Q

What is SNMP?

A

Simple Network Management Protocol

Gather statistics from network devices.

28
Q

What port is reserved for SNMP?

A

UDP/161 - Queries

UDP/162 - Traps

29
Q

what is the UDP 161 port reserved for?

A

SNMP - Simple Network Management Protocol

UDP/161 - Queries

UDP/162 - Traps

30
Q

What is the UDP 162 port reserved for?

A

SNMP - Simple Network Management Protocol

UDP/161 - Queries

UDP/162 - Traps

31
Q

What does SLP stand for?

A

Service Location Protocol

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

32
Q

What port is reserved for SLP?

A

TCP/427 and UDP/427

33
Q

what is FTP?

A

File transfer protocol - Transfers files between systems.

34
Q

What port is reserved for FTP?

A

TCP/20 - Active mode data port.

TCP/21 - Control of communication.

35
Q

what is the tcp 20 port reserved for?

A

FTP - File transfer protocol.

TCP/20 - Active mode data port.

36
Q

What is the TCP 21 port reserved for?

A

FTP - File transfer protocol.

TCP/21 - Control of communication.

Transfers files between systems.

37
Q

What is NetBIOS?

A

NetBIOS (/ˈnɛtbaɪɒs/) is an acronym for Network Basic Input/Output System. It provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network.

38
Q

What does TCP stand for?

A

Transmission Control Protocol (TCP)

39
Q

What does UDP stand for?

A

User Datagram Protocol (UDP)

40
Q

What is SMTP?

A

Simple Mail Transfer Protocol (SMTP)

used for email routing between mail servers

41
Q

What is DNS?

A

Domain Name System

he Domain Name System (DNS) is the hierarchical and decentralized naming system used to identify computers, services, and other resources reachable through the Internet or other Internet Protocol (IP) networks. The resource records contained in the DNS associate domain names with other forms of information. These are most commonly used to map human-friendly domain names to the numerical IP addresses computers need to locate services and devices using the underlying network protocols, but have been extended over time to perform many other functions as well. The Domain Name System has been an essential component of the functionality of the Internet since 1985.

42
Q

what port is reserved for DNS?

A

TCP 53

43
Q

what is the TCP 53 port reserved for?

A

DNS - Domain Name System

44
Q

what port is reserved for http?

A

TCP 80

45
Q

what is the TCP 80 reserved for?

A

HTTP

46
Q

what port is reserved for https?

A

TCP 443

47
Q

what is the TCP 443 port reserved for?

A

https

48
Q

what are ports 137-139 reserved for?

A

NetBIOs

49
Q

what ports are reserved for NetBIOs?

A

TCP & UDP 137-139

Josh's CompTIA A+ (10 decks)

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