IP (internet protocol

Question 1

Two common protocols

Answer 1

TCP (transmission control protocol)
UDP (User datagram protocol)

Question 2

protocol characteristics

Answer 2

inside IP packet
common ways of moving data
Operate at transport layer of OSI
provides multiplexing (different apps using server at the same time)

Question 3

characteristics of TCP

Answer 3

connection required
reliable delivery (data verification)
manages out of order messages
manage amount of data sent

Question 4

characteristics of UDP

Answer 4

no connection required
unreliable delivery (no data verification)
cannot manage sent data

Question 5

Why UDP

Answer 5

useful for real time communication
used to assign IP addresses DHCP
used for TFTP- trivial file transfer protocol

Question 6

Why TCP

Answer 6

confirm data transfer
no need to worry about missing data
https- send information to web browser
SSH- provides encrypted comms to our systems

Question 7

what requirements for delivery ?

Answer 7

IP address/ client IP
protocol/ protocol
port number for application/port number for the client to send data

Question 8

tcp 80, tcp 443

Answer 8

port numbers commonly used for web servers

Question 9

FTP

Answer 9

File Transfer Protocol,
tcp 20/21
transfer of files between systems

Question 10

SSH

Answer 10

Secure Shell,
tcp/22,
sends comms as encrypted data
provides a secure connection to remote device console

Question 11

Telnet

Answer 11

Telecommunication Network,
tcp/23
remote access to devices via terminal or command line, not secure communication

Question 12

SMTP

Answer 12

simple mail transfer protocol
tcp/25
transfer of mail between servers

Question 13

DNS

Answer 13

domain name system,
udp/53
makes the connection to the ip address of a website name

Question 14

DHCP

Answer 14

dynamic host configuration protocol
udp 67/68
leases a custom IP address to a device on a dhcp server

Question 15

HTTPS/HTTP

Answer 15

hyper text transfer protocol
tcp 80/ tcp 443
encrypted communication with web server for web browsers

Question 16

POP3

Answer 16

Post Office Protocol
tcp/ 110
basic retrieval from an email server

Question 17

IMAP

Answer 17

Internet Message Access Protocol
tcp/143
sync multiple devices to an email inbox

Question 18

SMB

Answer 18

Server Message Block
tcp/ 445
used by windows for file transfers and sharing printers

Question 19

SNMP

Answer 19

Simple Network Management Protocol
udp 161/162
gatherers performance details from network device

Question 20

SNMP versions

Answer 20

Ver1 sent info in the clear
Ver2 bulk transfers of info in the clear
Ver3 message integrity and authentication of data

Question 21

LDAP

Answer 21

Lightweight Directory Access Protocol
tcp/ 389
queries directory servers

Question 22

RDP

Answer 22

remote desktop protocol
tcp/ 3389
allows control of entire desktop or a certain app