Chapter 7

Question 1

TCP (Transmission Control Protocol)

Answer 1

*more important to remember Is slower due to reliability due to 3-way handshake

Question 2

UDP (User Datagram Protocol)

Answer 2

Most commonly used in real-time applications and streaming Is unreliable and does not guarantee the successful sending of data packets. Is faster due to unreliability and the number of packets sent. (EX: HTTP: is an example of UDP, any video viewing is used by UDP)

Question 3

Webpage Protocols

Answer 3

FTP (File Transfer Protocol)- Could be used to transfer files. Port 21

SFTP(Secure File Transfer Protocol)-For encrypted file transfer. Port 22.
*More security is slower. Less security is faster.

HTTP (Hypertext Transport Protocol)-is responsible for standard internet/ webpage access. Uses port 80

HTTPS (Hypertext Transport Protocol Secured)-Is responsible for encrypted internet/webpage access. Uses port 443

Question 4

Remote Access Protocols

Answer 4

Telnet (Teletype Network)- Used to remote into another device via console access. Faster. Not secure. Port 23.

SSH (Secure Shell)-Used to remote into another device via console or secure shell via encryption. Port 22. Port 22 is also for SFTP.

RDP (Remote Desktop Protocol)-Used to access a device through a GUI (Graphical User Interface). Port 3389.

Question 5

Email Protocols

Answer 5

Outgoing

SMTP(Simple Message Transport)-Sends out mail. Port 25.

Incoming
POP3(Post Office Protocol)-Older protocol that is used for receiving standard mail. Port 110

IMAP(Internet Map access protocol)- responsible for receiving email Port 143. Emails are stored from the servers themselves. We are more familiar with it. Synchronizes email.

Question 6

Other Protocols

Answer 6

DHCP(Dynamic Host Configuration Protocol)-Automatically assigns IP addresses → is used to locate your device on a network. No IP address, no network access. Port 67 & 68.

DNS (Domain Name Service)- Resolves or translates domain names to IP addresses. Port 53.

SMB (Server Message Block)- enables the ability to share files and printers on a network. Ports 137-139.

SNMP (Simple Network Management Protocol)- Monitors the network. Port 161.

LDAP(Lightwork Directory Access Protocol)- Allows you to access files. Allows you to look up information that is stored. Port 389.

Question 7

FTP

Answer 7

Port 21

Question 8

SFTP

Answer 8

Port 22

Question 9

HTTP

Answer 9

Port 80

Question 10

HTTPS

Answer 10

Port 443

Question 11

Telnet

Answer 11

Port 23

Question 12

SSH

Answer 12

Port 22

Question 13

RDP

Answer 13

Port 3389

Question 14

SMTP

Answer 14

Port 25

Question 15

POP3

Answer 15

Port 110

Question 16

IMAP

Answer 16

Port 143

Question 17

DHCP

Answer 17

Port 67 & 68

Question 18

DNS

Answer 18

Port 53

Question 19

SMB

Answer 19

Ports 137-139

Question 20

SNMP

Answer 20

Port 161

Question 21

LDAP

Answer 21

Port 389