Protocols and Numbers

Question 1

(FTP) File Transfer Protocol -Handles file uploads and downloads, transferring data and programs.

Answer 1

TCP Port 22

Question 2

(SFTP) Secure File Transfer Protocol is a network protocol for securely accessing, transferring and managing large files and sensitive data.

Answer 2

TCP Port 22

Question 3

(TFTP) Trivial File Transfer Protocol is a simple protocol that provides basic file transfer function with no user authentication.

Answer 3

TCP Port 69

Question 4

(HTTP) Hypertext Transfer Protocol is an application-layer protocol for transmitting hypermedia documents, such as HTML.

Answer 4

TCP Port 80

Question 5

(HTTPS) Hypertext Transfer Protocol Secure is a combination of the Hypertext Transfer Protocol (HTTP) with the Secure Socket Layer (SSL)/Transport Layer Security (TLS) protocol. TLS is an authentication and security protocol widely implemented in browsers and Web servers.

Answer 5

TCP Port 443

Question 6

(DHCP) Dynamic Host Configuration Protocol allows hosts to obtain required TCP/IP configuration information from a DHCP server.

Answer 6

UDP Server port 67, UDP Client port 68

Question 7

(DNS) Domain Name System turns domain names into IP addresses, which allow browsers to get to websites and other internet resources.

Answer 7

UDP Port 53

Question 8

(ICMP) Internet Control Message Protocol is used for reporting errors and performing network diagnostics. In the error reporting process, ICMP sends messages from the receiver to the sender when data does not come though as it should.

Answer 8

Does not use TCP or UDP ports

Question 9

(NTP) Network Time Protocol is a protocol that allows the synchronization of system clocks (from desktops to servers).

Answer 9

UDP Port 123

Question 10

(SMTP) The Simple Mail Transfer Protocol is a technical standard for transmitting electronic mail (email) over a network.

Answer 10

TCP Port 22

Question 11

(IMAP) Internet message access protocol is a protocol for receiving email that allows users to access their emails from different devices.

Answer 11

IMAP TCP port 143
IMAPS TCP port 993

Question 12

(POP3) Post Office Protocol
is an older protocol that was originally designed to be used on only one computer. Unlike modern protocols that use two-way synchronization, POP3 only supports one-way email synchronization, only allowing users to download emails from a server to a client.

Answer 12

TCP Port 110

Question 13

The SMB Server Message Block protocol was developed by Microsoft for direct file sharing over local networks.

Answer 13

TCP Port 445

Question 14

Routing Information Protocol (RIP) is a dynamic routing protocol that uses hop count as a routing metric to find the best path between source and destination networks.

Answer 14

Port 520

Question 15

Open Shortest Path First (OSPF) is a link-state routing protocol used to find the best path between a source and destination router using its own shortest path first).

Answer 15

Port 89

Question 16

Enhanced Interior Gateway Routing Protocol (EIGRP) is a dynamic routing protocol used to find the best path and deliver packets between any two Layer 3 devices.

Answer 16

Port 88

Question 17

Border Gateway Protocol (BGP) is a protocol used to exchange Internet routing information and is used between ISPs in different ASes.

Answer 17

Port 179