Which of the following types of Network Address Translation (NAT) uses a pool of public IP addresses?

The correct answer is B. Dynamic NAT. Dynamic NAT maps outgoing traffic to a rotating pool of public IP addresses, assigning one per session from the pool - making B the correct answer. Why the distractors are wrong: A (PAT): Also called NAT overload, PAT maps many private IPs to a single public IP by…

Network Security Foundations

Question

Which of the following types of Network Address Translation (NAT) uses a pool of public IP addresses?

Options

APort Address Translation (PAT)
BDynamic NAT
CStatic NAT
DCache NAT

How the community answered

(51 responses)

A
4% (2)
B
75% (38)
C
6% (3)
D
16% (8)

Explanation

Dynamic NAT maps outgoing traffic to a rotating pool of public IP addresses, assigning one per session from the pool - making B the correct answer.

Why the distractors are wrong:

A (PAT): Also called NAT overload, PAT maps many private IPs to a single public IP by differentiating sessions using port numbers - no pool involved.
C (Static NAT): Creates a permanent one-to-one mapping between a specific private IP and a specific public IP - fixed, not pooled.
D (Cache NAT): Not a real NAT type; this is a distractor.

Memory tip: Think "Dynamic = Draw from a pool" - Dynamic NAT dynamically draws an address from a pool for each new session, just like drawing a ticket from a bucket. When the session ends, the address goes back in the pool.

Topics

#Dynamic NAT#IP addressing#Network protocols#NAT types

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