Why are public IPv4 addresses considered a scarce resource?

Because they are only assigned to government and military organizations.

Because they must be unique across the entire internet, and the IPv4 address space is limited.

Because they are only available from a single global registry.

Because they are encrypted and require special hardware to use.

A company has a web server that must be accessible from the internet. The server is behind a router that uses NAT. The administrator configured static NAT to map the public IP to the server's private IP. However, external users cannot access the server. Which additional configuration is most likely required?

Change the server's private IP address

Configure a firewall rule to allow inbound traffic to the server

How do private and public IP addresses differ in terms of allocation?

Private addresses are allocated by IANA, while public addresses are allocated by local administrators.

Private addresses are free to use without registration, while public addresses must be allocated by an ISP or registry.

Private addresses are allocated by ISPs, while public addresses are self-assigned.

Private addresses are only used in cloud environments, while public addresses are used on-premises.

CiscoCertified Support Technician (CCST) Networking

Domain 2Objective 1

2.1. Compare and Contrast Private Addresses and Public Addresses. 100-150 Practice Questions (Page 5)

Part of the Addressing and Subnet Formats domain, which makes up ~11% of our current practice bank. Cisco does not publish an official question count, but from its 50-minute exam (~20–35 total, ~2–4 in this domain), expect 1–1 from this objective — we provide 36 practice questions to prepare you well beyond it. (estimate)

36questions here

8free pages

5concepts

Questions 21–25

21foundation · easy
Why are public IPv4 addresses considered a scarce resource?
Select an answer first
22expert · hard
A company has a web server that must be accessible from the internet. The server is behind a router that uses NAT. The administrator configured static NAT to map the public IP to the server's private IP. However, external users cannot access the server. Which additional configuration is most likely required?
Select an answer first
23foundation · easy
How do private and public IP addresses differ in terms of allocation?
Select an answer first
24application · medium
A technician is configuring a new printer on a small office LAN. The office uses the 192.168.1.0/24 network. Which IP address should the technician assign to the printer?
Select an answer first
25application · medium
A network administrator configures a router to translate private addresses to a public address for internet access. Which NAT term describes the process of changing the source IP address in outgoing packets?
Select an answer first

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2.1. Compare and Contrast Private Addresses and Public Addresses. 100-150 Practice Questions (Page 5)

Questions 21–25

Why are public IPv4 addresses considered a scarce resource?

How do private and public IP addresses differ in terms of allocation?

A technician is configuring a new printer on a small office LAN. The office uses the 192.168.1.0/24 network. Which IP address should the technician assign to the printer?

A network administrator configures a router to translate private addresses to a public address for internet access. Which NAT term describes the process of changing the source IP address in outgoing packets?

Keep studying — Addressing and Subnet Formats