PAT MODULES 2

PAT MODULES 1-6 PREPARATION SCRIPT
2026 COMPREHENSIVE Q&A ALREADY
PASSED

◉ What is the private address range for this prefix: 172.16.0.0/12.
Answer: 172.16.0.0 - 172.31.255.255 (Mod. 6.1.1)


◉ What is the private address range for this prefix: 192.168.0.0/16.
Answer: 192.168.0.0 - 192.168.255.255 (Mod. 6.1.1)


◉ What is NAT?. Answer: Network Address Translation, it translates a
private address from an internal network into a public address to allow
access to the internet (Mod. 6.1.2)


◉ NAT 4 types of Addresses: Inside Local:. Answer: this is the source
address seen from inside the network(private address) (Mod. 6.1.4)


◉ NAT 4 types of Addresses: Inside Global Address:. Answer: source
address seen from outside the network (public address) (Mod. 6.1.4)


◉ NAT 4 types of Addresses: Outside Global Address:. Answer: the
destination address seen from the outside network (Mod. 6.1.4)

, ◉ NAT 4 types of Addresses: Outside Local Address:. Answer: The
destination address seen from inside the network. Usually the same as
outside global addresses (Mod. 6.1.4)


◉ What kind of mapping of local & global addresses does static NAT
use? Where is it typically used in?. Answer: one to one mapping: Static
NAT is typically used for servers or devices that need to have the same
addresses. (Mod. 6.2.1)


◉ How is Dynamic NAT used?. Answer: it uses a pool of public
addresses that are assigned on a first come first serve (Mod. 6.2.2)


◉ How is PAT used:. Answer: Port Address Translation use a one to
many mapping of multiple private addresses to 1 public address. this is
possible by assigning a addressing with an source port number (Mod.
6.2.3)


◉ What are the 3 port groups PAT is able to use?. Answer: 0-511, 512-
1023 & 1024-65535 (Mod. 6.2.5)


◉ Comparisons between NAT & PAT: What are the 3 main functions of
NAT. Answer: - One to One mapping of inside local & global addresses
- Uses only IPv4 for translation process
- A unique global address is required for each inside host (Mod. 6.2.5)