Network+ Ports and Protocols Exam | Questions And Answers Latest {2024- 2025} A+
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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
TCP Port
UDP Port 67, 68
DNS - Domain Name System: Resolves domain names to corresponding IP addresses
TCP Port 53
UDP Port 53
FTP - File Transfer Protocol: Transfers files with a remote host (typically requires authentication of user
credentials)
TCP Port 20 and 21
UDP Port
H.323 - A signaling protocol that provides multimedia communications over a network
TCP Port 1720
UDP Port
HTTP - Hypertext Transfer Protocol: Retrieves content from a web server
TCP Port 80
UDP Port
HTTPS - Hypertext Transfer Protocol Secure: Used to securely retrieve content from a web server
, TCP Port 443
UDP Port
IMAP/ IMAP4 - Internet Message Access Protocol: (version 4 most recent) Retrieves email from an email
server
TCP Port 143
LDAP - Lightweight Directory Access Protocol: Provides directory services (for example, a user directory
that includes username, password, email, and phone number information) to network clients
TCP Port 389
UDP Port
LDAPS - Lightweight Directory Access Protocol over SSH: A secured version of LDAP
TCP Port 636
UDP Port
MGCP - Media Gateway Control Protocol: Used as a call control and communication protocol for Voice
over IP networks
TCP Port
UDP Port 2427, 2727
NetBIOS - Network Basic Input/Output System: Provides network communication services for LANs that
use NetBIOS
TCP Port 139
UDP Port 137, 138
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