Here are some important questions asked in CCNA interviews that will definitely help both the fresher as well as experienced candidates.
What conversion steps can we follow for data encapsulation?
The conversion steps for data encapsulation include a lot of things. They are:
The first three layers of data encapsulation, namely layer 1, layer two, and layer 4, in which the alphanumeric inputs from the user is converted into the form of data. The three layers mentioned in the following are the application layer, presentation layer, and session layer, respectively.
Layer 4 or the transport layer in which the data is broken into minute segments and are then processed.
Layer 5 or the network layer in which the data is further converted into datagrams or packets after being broken into small segments. A network header is then added to the following data.
Layer 6 or the data link layer in which the datagrams or the packets are further built into frames.
Layer 7 or the physical layer is the final layer of the following. In this layer, the frames are further converted into bits.
Distinguish between TCP and UDP
Before answering the following question, individuals need to know what are TCP and UDP. They are both protocols that are used for sending files across computer networks.
TCP
TCP is actually a connection-oriented protocol. If the connection is lost during transferring files, then the server would request to gain back the lost part. The following protocol doesn’t experience corruption while transferring a message. Data present in the TCP protocol is always read as a stream. In the following, a package begins when one ends. The message which is sent in the following will be delivered in the same order. Some examples of TCP would include file transfer protocol (FTP), e-mail, and the world wide web (www).
UDP
UDP is completely based on a connectionless protocol. When the user sends the data, there is no certain guarantee that the data will be transferred, and the message will reach there as soon as it is sent. The message will also not face any kind of leakage. The packets in the following protocol are transmitted individually and are also guaranteed to be complete if they arrive. The only problem in the following protocol is that the message which is sent might not get delivered in the same order as it’s sent. Some examples of UDP are Voice Over Internet Protocol (VOIP) and Trivial File Transfer Protocol (TFTP).
- Also Read: – How to Fix DNS Probe Finished No Internet Error?
Which command needs to be used if the individual wishes to delete the stored configuration data?
The command which an individual needs to use for this purpose is “Erase Startup”. The following command deletes all configuration data, which is stored in NVRAM.
What is the work of the clock rate?
The work of the clock rate is to enable all the routers or the DCE equipment to communicate in a proper manner. The following proves to be very beneficial for the devices.
Define EIGRP
EIGRP is the acronym of Enhanced Interior Gateway Routing Protocol. The following routing protocol is a protocol that is designed by the systems of CISCO. The EIGRP is availed in a router in order to share routes with the other routers inside the same autonomous system. The following is not like other routers such as RIP. The following only reduces the workload on the router by sending incremental updates. The EIGRP also sends information regarding what amount of data needs to be transferred.
In how many ways can a router be accessed?
The following is one of the simple questions which is asked in a CCNA interview. The following question is asked to know how much the individual applying for the interview is thorough about CCNA Certification.
The answer to the following question is three. There are three ways in which a router can be accessed. The ways are:
- Telnet
- Console
- AUX
What do you know about BOOTP?
BOOTP is actually a computer networking protocol that is used to implement an IP address to the network devices from any kind of configuration server in the CCNA course.
What is DHCP?
DHCP is the acronym of Dynamic Host Configuration Protocol. The work of DHCP is to assign an IP address to a given workstation client that to automatically. By making use of the following, individuals can also make static IPS for machines or devices such as servers, routers, printers, and scanners.
What is the size of the IP address?
The IP address size of two different devices is different. For IPv4, the size of the IP address is 32 bit, and for IPv6, the size of the IP address is 128 bits.
