TCP & UDP

Question 1

FTP

Answer 1

File Transfer Protocol
Port: 20 & 21
Used to move files
TCP

Question 2

SSH

Answer 2

Secure Shell
Port: 22
Can be used to secure other protocols like FTP
TCP

Question 3

Telnet

Answer 3

Telnet
Port: 23
Used to make remote connections to telnet server or networking devices (unsecure)
TCP

Question 4

SMTP

Answer 4

Simple Mail Transfer Protocol
Port 25
Protocol responsible for moving emails
TCP

Question 5

DNS

Answer 5

Domain Name Server
Port 53
Used to resolve host name to an IP address
TCP and UDP

Question 6

HTTP

Answer 6

Hyper Text Transfer Protocol
Port: 80
Used to Surf the Web
TCP

Question 7

Pop3

Answer 7

Post Office Protocol
Port: 110 (unsecure) 995 (secure)
Protocol used for email, only has one copy of data server side
TCP

Question 8

IMAP

Answer 8

Internet Messaging Access Protocol
Port 143 (unsecure) 993 (secure)
Protocol used for email, has multiple copies of data server side
TCP

Question 9

HTTPS

Answer 9

Hyper Text Transfer Protocol Secure
Port: 443
This is HTTP combined with a security System like SSH
TCP

Question 10

RDP

Answer 10

Remote Desktop Protocol
Port: 3389
Used to Create remote connections to server or desktop with a UI

Question 11

Net BIOS/NetBT

Answer 11

Net BIOS/NetBT
Port: 137 (UDP) 139 (TCP)
Used in windows for its file and printer sharing

Question 12

SMB

Answer 12

Server Message Blocks
Port: 445
Client-Server Communication protocol used for sharing access to files, printers, serial ports and other resources on a network
TCP

Question 13

CIFS

Answer 13

Common Internet File System
Port: 445
Part of SMB but adapted to support OS’s outside of Microsoft Windows
TCP

Question 14

SLP

Answer 14

Service Location Protocol
Port: 427
Allows computers and other devices to find services in a local area network (LAN) without prior configuration
UDP

Question 15

AFP

Answer 15

Apple Filing Protocol
Port: 548
Offers file services for macOS and the classic Mac OS
TCP

Question 16

DHCP

Answer 16

Dynamic Host Configuration Protocol
Port: 67 (Server) 68 (Client)
DHCP is a protocol that provides an Internet Protocol (IP) host with its IP address and other related configuration information like Subnet Mask and/or default Gateway.
UDP

Question 17

LDAP

Answer 17

Lightweight Directory Access Protocol
Port: 389
A Lightweight Client-Server protocol for accessing directory services, specifically x.500 based directory services
TCP

Question 18

SNMP

Answer 18

Simple Network Management Protocol
Port: 161 (get) 162 (Trap)
Collecting and organizing information about managed devices on IP networks and modifying that information to change device behaviour.
TCP

Question 19

TCP

Answer 19

Transmission Control Protocol
“Reliable” meaning it checks in with you to clarify that it is still doing what you asked it to.

Uses a 3 way handshake SYN > SYN/ACK > ACK

Uses “4 way shutdown process” Fin > Ack > Fin > Ack

Question 20

UDP

Answer 20

User Datagram Protocol
Connectionless Protocol “unreliable” (doesn’t check in)

Lower overheads (good for time sensitive data eg voice communication)

No error correction (no backup for lost data)