51.What is NAT?
a) A protocol used for remote access to a network
b) A device that connects multiple devices in a LAN
c) A tool used to test network connectivity
d) A technique used to map public IP addresses to private IP addresses
52. What is QoS?
a) A tool used to test network connectivity
b) A technique used to prioritize network traffic
c) A type of wireless network
d) A protocol used for remote access to a network
53. What is MPLS?
a) A protocol used for remote access to a network
b) A technique used to prioritize network traffic
c) A type of wireless network
d) A system used to resolve domain names to IP addresses
54. What is a load balancer?
a) A device that connects multiple devices in a LAN
b) A device that forwards data packets between networks
c) A device used to distribute network traffic across multiple servers
d) A tool used to test network connectivity
55. What is a DMZ?
a) A type of network topology
b) A type of network cable
c) A network segment that is exposed to the internet but isolated from the internal network
d) A tool used to test network connectivity
