Which transmission protocol ensures reliability by completing a three-way handshake?

• Transmission Control Protocol

• User Datagram Protocol

• File Transfer Protocol

• Access Control Protocol

Answer explanation

Transmission Control Protocol is the transmission protocol that ensures reliability by using a three-way handshake.

What two versions of Internet Protocol are the core protocols used for the internet?

• IPv4 and IPv6

• IPv6 and IPv3

• IPv2 and IPv4

• IPv2 and IPv6

Answer explanation

We use versions IPv4 and IPv6 as the core protocols for the internet.

Hypertext Transfer Protocol Secure (HTTPS) uses what port?

• 80

• 67

• 1701

• 443

Answer explanation

HTTPS uses port 443.

What protocol uses port 80?

• HTTPS

• RADIUS

• HTTP

• SSH

Answer explanation

Hypertext transfer Protocol (HTTP) uses port 80.

Secure Shell (SSH) protocol runs over this port.

• 21

• 22

• 23

• 25

Answer explanation

Secure Shell protocol runs over port 22.

SSH enables two computers to communication in a secure way.

Mnemonic - Turtles in a half shell - Ninja Turtles (Shell) - All of them are under the age of 22 (they are teenagers).

What port does TELNET (Teletype Network) protocol use?

• 21

• 22

• 23

• 25

Answer explanation

TELNET uses port 23.

A network protocol that allows a user on one computer to log into another computer that is part of the same network.

Mnemonic: "Tell me he hit nothing but net" - Michael Jordan #23

What port does File Transfer Protocol (FTP) use? (Choose two)

• 25

• 20

• 22

• 21

Answer explanation

File Transfer Protocol uses ports 20 and 21.

This protocol governs how computers transfer files from one system to another over the internet.

Mnemonic - "Forget the Pandemic 2021"

What port does Simple Network Management Protocol (SNMP) run on?

• 443

• 389

• 161

• 80

Answer explanation

SNMP runs over port 161.

This protocol monitors and manages the network devices like routers/switches/firewalls connected over an IP.

Mnemonic: "simple network management must be done over the 161"

Lightweight Directory Access Protocol (LDAP) uses what port?

• 636

• 389

• 443

• 143

Answer explanation

LDAP runs over port 389.

This protocol provides a central place for authentication, storing usernames and passwords to validate users.

Mnemonic: "Luh-Dap is a french fellow who weighs 389 pounds"

What port does Simple Mail Transfer Protocol use?

• 25

• 67

• 53

• 110

Answer explanation

SMTP uses port 25.

This protocol is used to send, relay or forward messages from a mail client, but cannot receive messages.

Mnemonic: "It only costed .25 cents to send mail back in my day"