Relevant CCNA v3.0 Exam Questions for the 200-125 Certification

Relevant CCNA v3.0 Exam Questions for the 200-125 Certification

Are you preparing for the Cisco Certified Network Associate (CCNA) v3.0 exam? Look no further! In this blog post, we have compiled a list of relevant exam questions that will help you ace the 200-125 certification.

1. What are the different layers of the OSI model and their functions?

Answer: The OSI model consists of seven layers – Physical, Data Link, Network, Transport, Session, Presentation, and Application. Each layer has its specific functions in the network communication process.

2. What is the purpose of subnetting, and how does it help in network design?

Answer: Subnetting is the process of dividing a larger network into smaller subnetworks. It helps in improving network performance, reducing broadcast traffic, and enhancing security by isolating different departments or segments.

3. Explain the difference between static and dynamic routing.

Answer: Static routing involves manually configuring the routing table entries, while dynamic routing uses routing protocols to automatically update and exchange routing information between routers.

4. What is the purpose of the Spanning Tree Protocol (STP) and how does it prevent network loops?

Answer: STP is used to prevent network loops in redundant switch topologies. It works by electing a root bridge and calculating the shortest path to reach the root bridge, thereby disabling certain ports to avoid loops.

5. How does the Domain Name System (DNS) work?

Answer: DNS translates domain names into IP addresses. When a user enters a URL, the DNS server resolves the domain name to its corresponding IP address, allowing the user’s device to establish a connection.

6. Explain the concept of Virtual LANs (VLANs) and their benefits.

Answer: VLANs allow logical segmentation of a physical network, enabling different groups of devices to be logically grouped together, regardless of their physical locations. Benefits of VLANs include improved security, simplified network management, and increased scalability.

7. What is Network Address Translation (NAT) and how does it facilitate private-to-public IP address translation?

Answer: NAT allows multiple devices on a private network to share a single public IP address. It translates private IP addresses to the public IP address when communicating with devices on the Internet, enabling them to communicate with the outside world.

8. How does the Dynamic Host Configuration Protocol (DHCP) simplify IP address management?

Answer: DHCP automatically assigns IP addresses, subnet masks, default gateways, and other network configuration parameters to devices on a network. It simplifies IP address management by dynamically allocating and reclaiming IP addresses as needed.


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