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cisco > cisco 2 > Flashcards

cisco 2 Flashcards

port number

1
Q

FTP

A

20 and 21

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2
Q

SSH

A

22

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2
Q

SMTP

A

25

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2
Q

DNS

A

53

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2
Q

HTTP

A

80

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3
Q

POP3

A

110

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3
Q

ICANN

A

Internet Corporation for Assigning Names and Numbers

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3
Q

IMAP

A

143

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3
Q

Registered category

A

A registered port:

Is assigned by ICANN for a newly created network service.
Has port numbers ranging from 1024 to 49151.

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3
Q

HTTPS

A

443

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4
Q

Dynamic (private or high) category

A

A dynamic port:

Is assigned when a network service establishes contact and released when the session ends.
Allows applications to listen to the assigned port for other incoming requests. Traffic for a protocol can be received through a port other than the port which the protocol is assigned. This requires that the destination application or service is listening for that type of traffic on that port.
Has port numbers ranging from 49,152 to 65,535.

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5
Q

Well-known category

A

A well-known port is:

Assigned for specific protocols and services.
Has port numbers ranging from 0 to 1023.

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6
Q

File Transfer Protocol (FTP)

A

TCP 20 21

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7
Q

Secure Shell (SSH)

A

TCP UDP 22

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8
Q

Telnet

A

TCP UDP 23

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9
Q

Simple Mail Transfer Protocol (SMTP)

A

TCP UDP 25

10
Q

Domain Name Server (DNS)

A

TCP UDP 53

11
Q

Dynamic Host Configuration Protocol (DHCP)

A

UDP 67 68

12
Q

Trivial File Transfer Protocol (TFTP)

A

UDP 69

13
Q

Hypertext Transfer Protocol (HTTP)

A

TCP 80

14
Q

Post Office Protocol (POP3)

A

TCP 110

15
Q

Network Time Protocol (NTP)

A

UDP 123

16
Q

Network News Transport Protocol (NNTP)

A

TCP 119

17
Q

Internet Message Access Protocol (IMAP4)

A

TCP 143

18
Q

Simple Network Management Protocol (SNMP)

A

161 162 TCP UDP

19
Q

Lightweight Directory Access Protocol (LDAP)

A

TCP 389

20
Q

HTTP Secure Sockets Layer (SSL)

A

TCP 443

21
Q

Simple Mail Transport Protocol (SMTP)

A

SMTP is an email relay protocol

22
Q

Post Office Protocol Version 3 (POP3)

A

POP3 is an email relay protocol

23
Q

File Transfer Protocol (FTP)

A

FTP is a file transferring protocol that uses TCP

24
Q

Trivial File Transfer Protocol (TFTP)

A

TFTP is a file transferring protocol that uses UDP

25
Q

Simple Network Management Protocol (SNMP)

A

SNMP is a management and troubleshooting protocol

cisco (2 decks)

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