In the classful IPv4 addressing system, which address class is reserved for multicast and what is its default subnet mask?

Class C, default subnet mask 255.255.255.0

Class D, no default subnet mask

Class D, default subnet mask 255.255.255.0

Class E, default subnet mask 255.0.0.0

A company has a single public IP address and many internal servers that need to access the internet. The administrator wants to allow all internal servers to initiate outbound connections while minimizing the number of public IPs used. What is the most efficient approach?

Assign each server a public IP address

Place all servers on the public internet

Use NAT with port address translation (PAT)

A network technician is troubleshooting a connectivity issue and sees the IP address 224.0.0.5 in a packet capture. What is the purpose of this address?

It is a loopback address for testing

It is a multicast address used for routing protocols

It is a private address used for internal communication

It is a public address assigned to a web server

A company wants to ensure that its internal servers are not directly reachable from the internet. Which approach provides the best security while still allowing the servers to access the internet?

Assign public IP addresses to the servers and use a firewall

Use private IP addresses and NAT for outbound traffic

Disable the servers' network interfaces

A company's web server is hosted in a data center and has a public IP address. The server also has a private IP address for internal management. Why is the public IP address necessary for the web server?

To enable internet users to reach the server

To allow the server to use DHCP

To allow internal employees to access the server

To reduce the server's power consumption

CiscoCertified Support Technician (CCST) Networking

Domain 2Objective 1

2.1. Compare and Contrast Private Addresses and Public Addresses. 100-150 Practice Questions (Page 6)

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 26–30

26foundation · easy
In the classful IPv4 addressing system, which address class is reserved for multicast and what is its default subnet mask?
Select an answer first
27application · medium
A company has a single public IP address and many internal servers that need to access the internet. The administrator wants to allow all internal servers to initiate outbound connections while minimizing the number of public IPs used. What is the most efficient approach?
Select an answer first
28application · medium
A network technician is troubleshooting a connectivity issue and sees the IP address 224.0.0.5 in a packet capture. What is the purpose of this address?
Select an answer first
29application · medium
A company wants to ensure that its internal servers are not directly reachable from the internet. Which approach provides the best security while still allowing the servers to access the internet?
Select an answer first
30application · medium
A company's web server is hosted in a data center and has a public IP address. The server also has a private IP address for internal management. Why is the public IP address necessary for the web server?
Select an answer first

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