101 · Question #215
Which two statements are true about NATs. (Choose two.)
The correct answer is A. NATs support UDP, TCP, and ICMP traffic. C. NATs provide a onetoone mapping between IP addresses.. BIG-IP NATs create a strict one-to-one mapping between IP addresses and support UDP, TCP, and ICMP, which distinguishes them from SNATs that perform many-to-one translation.
Question
Which two statements are true about NATs. (Choose two.)
Options
- ANATs support UDP, TCP, and ICMP traffic.
- BNATs can be configured with mirroring enabled or disabled.
- CNATs provide a onetoone mapping between IP addresses.
- DNATs provide a manytoone mapping between IP addresses.
How the community answered
(52 responses)- A94% (49)
- B4% (2)
- D2% (1)
Why each option
BIG-IP NATs create a strict one-to-one mapping between IP addresses and support UDP, TCP, and ICMP, which distinguishes them from SNATs that perform many-to-one translation.
BIG-IP NAT objects support UDP, TCP, and ICMP traffic, allowing full bidirectional connectivity including ping for the mapped addresses.
Connection mirroring is a high-availability option configured on virtual servers and connections, not a setting that exists on NAT objects.
A NAT provides a one-to-one static mapping between a single internal IP and a single external IP, which is its defining characteristic and primary purpose.
Many-to-one IP address mapping is the defining characteristic of a SNAT, not a NAT; a NAT always maps exactly one address to one address.
Concept tested: F5 BIG-IP NAT one-to-one mapping and supported protocols
Source: https://support.f5.com/csp/article/K7684
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