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Introduction to CCNA Interview Questions and Answers

CCNA is an IT certification from CISCO. There are certain levels in CCNA certification. The level for CCNA certification has some levels built into it. The CCNA certifications have some objectives before its aspirants to understand, configure, operate, troubleshoot networks and connections using a remote sensing technology named as WAN. The areas covered under these certifications have a wide variety depending upon the profession, and desire one has.

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Certification level: There are 4-5 paths for the network engineer offered by CISCO.

Entry-level (CCENT)

Associate level (CCNA/ CCDA)

Professional level (CCNP/ CCDP))

Expert Level (CCIE/CCDE)

Architect (Recently added CCAR)

This CCNA Interview Questions article will focus its content only on the CCNA part, but before we move ahead, it better for our reader to know the streams available.

Routing and Switching

Design

Industrial Network

Network Security

Service Provider

Service Provider Operations

Storage Networking

Voice

Datacenter and wireless.

The certification offered by Cisco CCNA has a wide variety of topics to be covered. These are –

WAN and LAN design

OSI model

IP Addressing

VLAN and WLAN

Routers and their associated protocols

Network security and management

The CCNA certification has the following content Network Fundamental:

7.Infrastructure Management

If you are looking for a job related to CCNA, you need to prepare for the 2023 CCNA Interview Questions. Every interview is indeed different as per the different job profiles. Here, we have prepared the important CCNA Interview Questions and Answers, which will help you succeed in your interview.

This 2023 CCNA Interview Questions article will present the 11 most important and frequently used CCNA interview questions. These interview questions are divided into two parts are as follows:

Part 1 – CCNA Interview Questions (Basic)

This first part covers basic Interview Questions and Answers.

Q1. What do you mean by Routing?

Routing basically means the movement or transfer of information across the network. The selected network can be either of two – inter or intra. There is always a source and a destination needed for routing to take place. Routers are a dedicated device for the process of routing to happen. The routers are nothing but the network layer device.

Q2. Briefly explain how Routers are classified?

This is the basic CCNA Interview Questions asked in an interview. Routers are generally classified based on the below-listed criteria:

Static v/s Adaptive

Flat v/s hierarchical

Single path v/s multipath

Interdomain v/s intradomain

Link state v/s distance vector

Host intelligent v/s router intelligent.

Q3. What are Network, and mention their types?

MAN – Metro political area network.

Q4. Explain in detail the Network topology?

Topology refers to the pattern or layout of connection between the available network elements. The basic types of Network Topology are listed below –

Star Topology: These are preferred in a home. It has a central distribution system called a “hub”. The hub is either a switch or router. The good part about this type of topology is that if the failure happened in any network, then only that part is affected and not the entire. On the contrary, if the hub failed then the entire system may fall.

Ring Topology: Here, every system has exactly two neighbors or connections for communications. The data travels in a ring (either clockwise or anti-clockwise). These are generally preferred in colleges or schools. A failure in one network can damage the entire loop and take down the entire network.

Bus Topology: To understand this concept, assumes it as a common backbone. This topology architect is of this kind. There is a common connection for all the devices connections. In this type of connection, a device must send a connection request to the desired device. Others can see the request, but the intended device can only accept it.

Tree Topology: these integrate multiple star topologies together into a bus. Here only the hub devices can connect to the tree-bus network.

Mesh Topology: These topologies are based on the concept of routes. Here every single device is connected to every other device.

Q5. What would be the size for my IP address if it’s an IPv4 and IPv6?

For IPv4 its 32 bit and 128 bit for IPv6

Part 2 – CCNA Interview Questions (Advanced) Q6. What does Half-duplex and Full-duplex means?

If the communication id bi-directional or in both directions, then it’s a full-duplex, and if it’s a unidirectional or single direction, then it’s a Half-Duplex.

Q7. Name the layers that constitute the OSI model?

Layer 7 – Application

Q8. What is the difference between Switch, Routers, and Hub?

If anything comes in its port in the hub, it sends it out to the others. It is less expensive and the least complicated. It has a single collision domain and a single broadcast domain.

Q9. What are the different types of network in CCNA?

This is the most popular CCNA Interview Questions asked in an interview. There are two types of network:

Peer-to-Peer network

Server-based network

Q10. Define a MAC address?

MAC address is Media Access Control address. It is stored in ROM and is uniquely defined. It is identified as the Media Access Control layer in the network architecture.

Q11. Explain the difference between Collision Domain and Broadcast Domain?

Broadcast Domain uses a local network for broadcasting the data packets to the receiver. While broadcasting, massive data are broadcasted; hence the speed of receiving the data is less, and it also takes more time to receive the data of their address.

If more than two frames are sent simultaneously, then the data will collide with each other in between, and the information gets lost due to an occurrence of a collision, and the devices will not accept the data, and due to this, the communication between the sender and receiver side will collide.

Hence, the sender has to send the data again, and like this, it will take more time to receive the data at the receiver’s side.