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CompTia 901 A+ > 2.4 Explain common TCP and UDP ports, protocols, and their purpose. > Flashcards

2.4 Explain common TCP and UDP ports, protocols, and their purpose. Flashcards

1
Q

What port does Domain Name System (DNS) use?

A

UDP 53

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2
Q

What protocol uses port TCP 443?

A

HTTPS

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3
Q

What are the individual units called in Lightweight Directory Access Protocol (LDAP)?

A

Leaf objects

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4
Q

What protocol uses port TCP 80?

A

HTTP

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5
Q

Which ports does Lightweight Directory Access Protocol (LDAP) use? (2)

A

TCP 389 / UDP 389

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6
Q

Which protocol uses port TCP 548?

A

Apple Filing Protocol (AFP)

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7
Q

What protocol uses port TCP 143?

A

IMAP4

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8
Q

Which protocol uses the X.500 standard?

A

Lightweight Directory Access Protocol (LDAP)

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9
Q

What is Remote Desktop Protocol (RDP)?

A

Connect to another computer remotely

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10
Q

What protocol uses TCP 20/21?

A

File Transfer Protocol (FTP)

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11
Q

What is the difference between TCP and UDP?

A

TCP sends an acknowledgment to confirm the receiving computer got the information

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12
Q

What other protocol does Apple Filing Protocol (AFP) use in conjunction?

A

Service Location Protocol (SLP)

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13
Q

What is the maximum port number?

A

65535

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14
Q

What ports does Server Message Block (SMB) use? (4)

A

UDP 137 / 138 / 139 & TCP 445

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15
Q

Why is UDP unreliable?

A

It just sends data with no acknowledgment

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16
Q

What ports does File Transfer Protocol use? (2)

A

TCP 20/21

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17
Q

What does POP3 and IMAP4 do?

A

Receive email

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18
Q

Where do you usually find a non-ephemeral port?

A

Servers or services

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19
Q

Which is a newer protocol POP3 or IMAP4?

A

IMAP4

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20
Q

What does Server Message Block (SMB) do?

A

Windows file transfers and print sharing

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21
Q

What service uses port UDP 53?

A

DNS

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22
Q

Is Telnet encrypted?

A

No

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23
Q

Which service uses UDP 67 / 68?

A

Dynamic Host Control Protocol (DHCP)

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24
Q

What is the standard for Lightweight Directory Access Protocol (LDAP)?

A

X.500 Directory Service

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25
Q

What does SNMP do?

A

It gathers statistics from network devices

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26
Q

What is HTTP?

A

Web server communication

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27
Q

What is the broader groups called in Lightweight Directory Access Protocol (LDAP)?

A

Container objects

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28
Q

Which network type is considered unreliable?

A

UDP

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29
Q

What is it called when a port number is temporary?

A

Ephemeral

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30
Q

A standard for developing an electronic directory of people in an organization that is uploaded to a global registry accessible to anyone with Internet access.

A

What is X.500 Directory Service

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31
Q

What protocol uses port TCP 3389?

A

RDP

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32
Q

What protocol uses port TCP 110?

A

POP3

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33
Q

What is the protocol for Windows file transfers and print sharing?

A

Server Message Block (SMB)

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34
Q

Which File Transfer Protocol (FTP) protocol uses TCP 21?

A

Control

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35
Q

What kind of port do you find in servers or services?

A

Non-ephemeral

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36
Q

What service uses port UDP 161?

A

Simple Network Management Protocol (SNMP)

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37
Q

What protocol uses port TCP 25?

A

Simple Mail Transfer Protocol (SMTP)

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38
Q

What does SMTP do?

A

Sends emails between mail servers

39
Q

What converts Human-Friendly Recognizable Names to IP addresses?

A

Domain Naming Service (DNS)

40
Q

What port does POP3 use?

A

TCP 110

41
Q

What Apple service uses Lightweight Directory Access Protocol (LDAP)?

A

OpenDirectory

42
Q

What are leaf objects in Lightweight Directory Access Protocol (LDAP)?

A

Individual units

43
Q

What is it called when a port number is permentant?

A

Non-ephemeral

44
Q

What port does Secure Shell (SSH) use?

A

TCP 22

45
Q

A Protocol for locating resources over a directory such as files, devices, individuals, & organizations over an IP network

A

Lightweight Directory Access Protocol (LDAP)

46
Q

What service assign IP address automatically to your network?

A

Dynamic Host Control Protocol (DHCP)

47
Q

What port does Apple Filing Protocol (AFP) use?

A

TCP 548

48
Q

Which protocols receives email?

A

POP3 and IMAP4

49
Q

What protocol populates a list of available devices?

A

Service Location Protocol (SLP)

50
Q

Which network type is considered reliable?

A

TCP

51
Q

Which protocol is web server communication without encryption?

A

HTTP

52
Q

What protocol sends emails between mail servers?

A

Simple Mail Transfer Protocol (SMTP)

53
Q

What port does Service Location Protocol (SLP) use? (2)

A

TCP/UDP 427

54
Q

What kind of ports do you usually find in client workstation?

A

Ephemeral

55
Q

What port does Simple Network Management Protocol (SNMP) use?

A

UDP 161

56
Q

What does the Service Location Protocol (SLP) do?

A

Populates the list of available devices

57
Q

What Window service uses Lightweight Directory Access Protocol (LDAP)?

A

Active Directory

58
Q

Does File Transfer Protocol (FTP) need authentication?

A

Yes

59
Q

What port does HTTPS use?

A

TCP 443

60
Q

Which protocol is web server communication WITH encryption?

A

HTTPS

61
Q

Which protocol uses port TCP 22?

A

Secure Shell (SSH)

62
Q

What is a Dynamic Host Configuration Protocol (DHCP)?

A

Assigns IP addresses automatically to your network

63
Q

What protocol uses port TCP 23?

A

Telnet

64
Q

What does Apple Filing Protocol (AFP) do?

A

It helps transfer files between Mac devices

65
Q

What is User Datagram Protocol (UDP)?

A

A connectionless protocol that does not require acknowledgment on the data it sends out

66
Q

What port does HTTP use?

A

TCP 80

67
Q

Why is TCP reliable?

A

It sends an acknowledgment (ACK) to make sure the other computer received the information

68
Q

What is HTTPS?

A

Web server communication with encryption

69
Q

What port does IMAP4 use?

A

TCP 143

70
Q

What protocol gathers statistics from network devices?

A

Simple Network Management Protocol (SNMP)

71
Q

A connectionless protocol that does not require acknowledgment on the data it sends out

A

What is User Datagram Protocol (UDP)?

72
Q

Where do you usually find a ephemeral port?

A

Client workstations

73
Q

What port does Simple Mail Transfer Protocol (SMTP) use?

A

TCP 25

74
Q

What is Light Directory Access Protocol (LDAP)?

A

A Protocol for locating resources via the directory such as files, devices, individuals & organizations over an IP network

75
Q

What does a Domain Name System (DNS) do?

A

it translates human-friendly computer hostnames into IP addresses

76
Q

What is a non-ephemeral port?

A

Permanent port numbers

77
Q

Which protocol helps transfer files between Mac devices?

A

Apple Filing Protocol (AFP)

78
Q

Which Simple Network Management Protocol (SNMP) version added Encryption?

A

Version 3

79
Q

Which protocol uses ports TCP 389 / UDP 389?

A

Lightweight Directory Access Protocol (LDAP)

80
Q

What is Server Message Block (SMB) also called?

A

Common Internet File System (CIFS)

81
Q

What are container objects in Lightweight Directory Access Protocol (LDAP)?

A

Used for broader groups

82
Q

What protocol does Apple OpenDirectory use?

A

Lightweight Directory Access Protocol (LDAP)

83
Q

What is X.500?

A

A standard for developing an electronic directory of people in an organization that is uploaded to a global registry accessible to anyone with Internet access.

84
Q

What port does File Transfer Protocol (FTP) Control Mode use?

A

TCP 21

85
Q

Why is UDP considered to be a connectionless protocol?

A

No virtual connection is established between two endpoints before the data transfer takes place.

86
Q

What is a ephemeral port?

A

Temporary port number

87
Q

What is the 4 things a TCP/UDP with IPv4 need?

A
  1. Server
  2. Client IP Address
  3. Client Server
  4. Client port number
88
Q

What port does Telecommunication Network (Telnet) use?

A

TCP 23

89
Q

What protocol uses ports TCP/UDP 427?

A

Service Location Protocol (SLP)

90
Q

Which port does Remote Desktop Protocol (RDP) use?

A

TCP 3389

91
Q

What is the ports used for DHCP? (2)

A

UDP 67 / 68

92
Q

What is the difference between Secure Shell (SSH) and Telnet?

A

Secure Shell (SSH) is encrypted

93
Q

What protocol does Windows Active Directory use?

A

Lightweight Directory Access Protocol (LDAP)

CompTia 901 A+ (25 decks)

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