CCNA Revision Questions – Ace Your Cisco Exam

CCNA Revision Questions – Ace Your Cisco Exam

In this blog post, we will cover a set of CCNA revision questions that will help you prepare and excel in your Cisco Certified Network Associate (CCNA) exam. Whether you are studying for the CCNA Routing and Switching or CCNA Security certification, these questions will test your knowledge and provide valuable insights.

Question 1: What is the purpose of a subnet mask?

The subnet mask is used to determine the network and host portions of an IP address. It helps divide an IP address into network and host addresses, allowing for efficient routing and addressing in a network.

Question 2: What is the difference between a router and a switch?

A router is a networking device that connects multiple networks together and forwards data packets between them. It operates at the network layer (Layer 3) of the OSI model. On the other hand, a switch is a device that connects multiple devices within a network and facilitates communication between them. It operates at the data link layer (Layer 2) of the OSI model.

Question 3: Explain the concept of VLANs.

VLANs (Virtual Local Area Networks) are logical partitions within a physical network. They allow you to segment a network into smaller broadcast domains, improving performance and security. Devices within the same VLAN can communicate with each other as if they are on the same physical network, even if they are physically located in different areas.

Question 4: What is the purpose of Access Control Lists (ACLs)?

ACLs are used to control network traffic by allowing or denying packets based on various criteria such as source/destination IP address, port number, or protocol type. They are often implemented on routers or firewalls to regulate access to networks and enhance network security.

Question 5: How does NAT (Network Address Translation) work?

NAT is a process used to translate private IP addresses into public IP addresses and vice versa. It allows multiple devices within a private network to share a single public IP address, thereby conserving IP address space. NAT operates at the network layer (Layer 3) of the OSI model and is commonly used in home and enterprise networks.

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