Protocols

Question 1

FTP 20/21

Answer 1

File Transfer Protocol
•Transfers files between a client and server on a network
•unsecure
•Data transferred in the clear

Question 2

SSH 22

Answer 2

Secure Shell
•cryptographic network protocol for operating network services securely over an unsecured network
•best known for remote login to computer systems by users

Question 3

Telnet 23

Answer 3

•Provides bidirectional interactive text-oriented communication facility using a virtual terminal connection
•like SSH, but unsecure

Question 4

SMTP 25

Answer 4

Simple Mail Transfer Protocol
•internet standard for sending email
•RFC 821 was defined originally in 1982
• RFC 5321 developed in 2008 (current version)

Question 5

DNS 67,68

Answer 5

Domain Name Service
• hierarchical decentralized baking system for computers, services, or other resources connected to the internet
• converts domain names to IP addresses

Question 6

DHCP 67,68

Answer 6

Dynamic host control protocol
• DHCP server dynamically assigns an IP address and other network configuration parameters to a client
• enables computers to request IP addresses and network parameters automatically
• Reduces burden on network administrators

Question 7

TFTP 69

Answer 7

Trivial File Transfer Protocol
•