osi model

Question 1

DHCP

Answer 1

67,

68 UDP

Question 2

DNS

Answer 2

53 53 TCP
Port
UDP

Question 3

FTP

Answer 3

20
and
21

Question 4

H.323

Answer 4

A signaling protocol that provides multimedia communications over a network 1720

Question 5

HTTP

Answer 5

Hypertext Transfer Protocol: Retrieves content from a web server 80

Question 6

HTTPS

Answer 6

Hypertext Transfer Protocol Secure: Used to securely retrieve content from a
web server
443

Question 7

IMAP

Answer 7

IMAP Internet Message Access Protocol: Retrieves email from an email server 143