CCNA 200-125 Exam Question Blog

CCNA 200-125 Exam Question Blog

The CCNA 200-125 exam is a highly sought-after certification in the networking industry. This blog post will provide you with a comprehensive review of some of the most important exam questions you may encounter during your preparation. Let’s dive right in!

1. What are the different layers of the OSI model?

The OSI model is composed of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. Each layer has a specific role in ensuring reliable communication between network devices.

2. What is the purpose of ARP (Address Resolution Protocol)?

ARP is used to resolve an IP address to a MAC address on a local network. It helps devices identify the MAC address of another device based on its IP address, enabling successful communication.

3. Explain the difference between a switch and a router.

A switch operates at the Data Link layer of the OSI model and is responsible for creating and maintaining a LAN (Local Area Network). It forwards data packets within the LAN based on MAC addresses. On the other hand, a router operates at the Network layer and connects multiple networks together, facilitating communication between them based on IP addresses.

4. What is subnetting and why is it important?

Subnetting is the process of dividing a network into smaller subnetworks. It allows efficient utilization of IP address space and enables better network management. By subnetting, you can create logical divisions within a network, improving performance, security, and overall scalability.

5. How is VLAN (Virtual Local Area Network) different from a traditional LAN?

A VLAN is a logical grouping of devices within a LAN. It allows you to segment a network without physically changing any connections. VLANs provide better security, improved performance, and easier network management compared to traditional LANs.

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