As you know, in the Network+ exam (N10-007), you will need to demonstrate your knowledge of important protocols at use in the network. You should also be aware of the Transport layer protocols in use by these network services, as well as the specific port number used. This handle table will help you. And check out this blog for great practice questions in this area. Be sure to click the READ MORE link – this list does not end with IMAP 🙂
- DHCP
Dynamic Host Configuration Protocol: Dynamically assigns IP address information (for example, IP address, subnet mask, DNS server’s IP address, and default gateway’s IP address) to a network device
UDP 67, 68 - DNS
Domain Name System: Resolves domain names to corresponding IP addresses
TCP 53
UDP 53 - FTP
File Transfer Protocol: Transfers files with a remote host (typically requires authentication of user credentials)
TCP 20 and 21 - H.323
A signaling protocol that provides multimedia communications over a network
TCP 1720 - HTTP
Hypertext Transfer Protocol: Retrieves content from a web server
TCP 80 - HTTPS
Hypertext Transfer Protocol Secure: Used to securely retrieve content from a web server
TCP 443 - IMAP
Internet Message Access Protocol: Retrieves email from an email server
TCP 143