A company has a total of two public IP addresses and must allow 150 devices to connect to the Internet at the same time. Which of the following is the BEST option for connectivity?

The correct answer is D. PAT. PAT (Port Address Translation), also called NAT Overload, allows many internal private IP addresses to share a single public IP address by differentiating connections using unique port numbers. This makes it possible for 150 devices to share just 2 public IPs. Basic NAT performs

Network implementation

Question

Options

AVLSM
BNAT
CCIDR
DPAT

How the community answered

(45 responses)

A
11% (5)
B
2% (1)
C
4% (2)
D
82% (37)

Explanation

PAT (Port Address Translation), also called NAT Overload, allows many internal private IP addresses to share a single public IP address by differentiating connections using unique port numbers. This makes it possible for 150 devices to share just 2 public IPs. Basic NAT performs one-to-one IP mapping and would not scale to 150 devices with only 2 public IPs. VLSM (Variable Length Subnet Masking) and CIDR (Classless Inter-Domain Routing) are IP addressing and subnetting techniques-they do not solve the problem of sharing a limited number of public IPs.

Topics

#PAT#NAT#port address translation#IP address sharing

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