Top Networking Interview Questions & Answers. 1) What is a Link? A link refers to the connectivity between two devices. It includes the type of cables and. Download basic networking interview questions and answers pdf for freshers and experienced which explain all networking concepts and commands ppt. Common Interview Questions for Computer. Networking and Information Security Majors. Interviewing with companies for IT positions, whether large or small.

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Networking Question Pdf

Download basic networking questions with asnwers for interviews. Start learning adhoc wireless networks, backbone networks and protocol for internet. Networking questions and answers with explanation for interview, freshers can download Networking quiz questions with answers as PDF files and eBooks. Networking Interview Questions updated on Apr 1. Define Network? A network is a set of devices connected by physical media links. A network is.

A link refers to the connectivity between two devices. It includes the type of cables and protocols used in order for one device to be able to communicate with the other. A backbone network is a centralized infrastructure that is designed to distribute different routes and data to various networks. It also handles management of bandwidth and various channels. It refers to the connection between computers and other network devices that are located within a small physical location. A node refers to a point or joint where a connection takes place. It can be computer or device that is part of a network. Two or more nodes are needed in order to form a network connection.

What Is Size Of Swap? What Is Attenuation? The degeneration of a signal over distance on a network cable is called attenuation. What Is Cladding? A layer of a glass surrounding the center fiber of glass inside a fiber-optic cable.

Networking Questions and Answers

What Is Netbios And Netbeui? A transport protocol designed by Microsoft and IBM for the use on small subnets. What Is Beaconing? The process that allows a network to self-repair networks problems.

The stations on the network notify the other stations on the ring when they are not receiving the transmissions. Telnet is also called as terminal emulation. It belongs to application layer.

Frame relay is a packet switching technology. It will operate in the data link layer. The standard protocol has been defined between the terminal and the PAD, called X.

Top 100 Networking Interview Questions & Answers

Together, these three recommendations are often called "triple X". Series of interface points that allow other computers to communicate with the other layers of network protocol stack. A generic term for section of a large networks usually separated by a bridge or router. What Is Subnet Mask? It is a term that makes distinguish between network address and host address in IP address. Subnet mask value 0 defines host partition in IP address and value 1 — defines Network address.

Describe Various Network Type? Local Area Networks Local area networks LANs are used to connect networking devices that are in a very close geographic area, such as a floor of a building, a building itself, or a campus environment.

Companies deploy basically two types of CNs: Distributing Internet traffic loads across multiple servers Storage Area Networks Storage area networks SANs provide a high-speed infrastructure to move data between storage devices and file servers. Disadvantage of SANs is their cost. Intranet An intranet is basically a network that is local to a company.

In other words, users from within this company can find all of their resources without having to go outside of the company. Extranet An extranet is an extended intranet, where certain internal services are made available to known external users or external business partners at remote locations. Internet An internet is used when unknown external users need to access internal resources in your network.

In other words, your company might have a web site that sells various products, and you want any external user to be able to access this service.

A VPN is used to provide a secure connection across a public network, such as an internet. Extranets typically use a VPN to provide a secure connection between a company and its known external users or offices. Authentication is provided to validate the identities of the two peers. Confidentiality provides encryption of the data to keep it private from prying eyes.

Integrity is used to ensure that the data sent between the two devices or sites has not been tampered with. It is an alternative to the Routing Information Protocol. The three types of routing tables are fixed, dynamic, and fixed central. What Is Packet Filter? Packet filter is a standard router equipped with some extra functionality. The extra functionality allows every incoming or outgoing packet to be inspected. Packets meeting some criterion are forwarded normally. Those that fail the test are dropped.

The same message might contain the name of the machine that has the boot files on it. If the boot image location is not specified, the workstation sends another UDP message to query the server. DNS resource record is an entry in a name server's database.

There are several types of resource records used, including name-to-address resolution information. It is a better choice than TCP because of the improved speed a connectionless protocol offers. Of course, transmission reliability suffers with UDP. Interior gateways connect LANs of one organization, whereas exterior gateways connect the organization to the outside world. When hierarchical routing is used, the routers are divided into what we call regions, with each router knowing all the details about how to route packets to destinations within its own region, but knowing nothing about the internal structure of other regions.

What Is Multicast Routing? Sending a message to a group is called multicasting, and its routing algorithm is called multicast routing. What Is Traffic Shaping? One of the main causes of congestion is that traffic is often busy.

If hosts could be made to transmit at a uniform rate, congestion would be less common. Another open loop method to help manage congestion is forcing the packet to be transmitted at a more predictable rate. This is called traffic shaping. Computer Fundamentals Tutorial. Hardware And Networking Practice Tests. IT Skills. Management Skills. Communication Skills. Business Skills. Digital Marketing Skills. Human Resources Skills. Health Care Skills. Finance Skills.

All Courses. All Practice Tests. Application Layer Question 3. Describe Domain Name System Answer: When the signal travels through the medium from one point to another it may chance to change the form or shape of the signal. It is called distortion. Distortion can occur in a composite signal made up of different frequencies. Each signal component has its own propagation speed through a traveling medium and, therefore, its own delay in reaching the final destination.

Means signal components at the receiver have phases different from what they had at the sender. The third cause of impairment is Noise. Following types of noise are possible. Thermal noise. Induced noise. Crosstalk noise. Impulse noise.

Networking Questions and Answers

Question 7. What Is Ip? Question 9. What Is A Layer? Complementary metal oxide semiconductor Question What Is Sap? What Is Subnet? Availability is high because of the redundancy features available. Distances can span up to 10 kilometers. Management is easy because of the centralization of data resources. Overhead is low uses a thin protocol. It is assigned by the Internet Service Provider as a permanent address.

Dynamic IP is the temporary IP address assigned by the network to a computing device. Dynamic IP is automatically assigned by the server to the network device. Q 42 How VPN is used in the corporate world? Corporate companies, educational institutions, government offices etc use this VPN.

Q 43 What is the difference between Firewall and Antivirus? Ans Firewall and Antivirus are two different security applications used in networking.

A firewall acts as a gatekeeper which prevents unauthorized users to access the private networks as intranets. A firewall examines each message and blocks the same which are unsecured. Antivirus is a software program that protects a computer from any malicious software, any virus, spyware, adware etc.

Note: A Firewall cannot protect the system from virus, spyware, adware etc. Q 44 Explain Beaconing? Ans If a network self-repair its problem then it is termed as Beaconing.

If a device in the network is facing any problem, then it notifies the other devices that they are not receiving any signal.

Hardware and Networking Interview Questions & Answers

Likewise, the problem gets repaired within the network. Q 45 Why the standard of an OSI model is termed as Ans OSI model was started in the month of February in So it is standardized as When a new device is added to the network, it broadcasts a message stating that it is new to the network. Then the message is transmitted to all the devices of the network.

Q 47 How can a network be certified as an effective network? What are the factors affecting them? The factors affecting the performance of a network are hardware, software, transmission medium types and the number of users using the network.

Reliability: Reliability is nothing but measuring the probability of failures occurred in a network and the time taken by it to recover from it. The factors affecting the same are the frequency of failure and recovery time from failure. Security: Protecting the data from viruses and unauthorized users. The factors affecting the security are viruses and users who do not have permission to access the network.

Q 48 Explain DNS? DNS acts as a translator between domain names and IP address. As humans remember names, the computer understands only numbers. Generally, we assign names to websites and computers like gmail. When we type such names the DNS translates it into numbers and execute our requests. Translating the names into numbers or IP address is named as a Forward lookup.

Translating the IP address to names is named as a Reverse lookup. This is used to design or develop standards that are used for networking. Q 50 What is the use of encryption and decryption? Ans Encryption is the process of converting the transmission data into another form that is not read by any other device other than the intended receiver.

Decryption is the process of converting back the encrypted data to its normal form. An algorithm called cipher is used in this conversion process. Q 51 Brief Ethernet? For example, if we connect a computer and laptop to a printer, then we can call it as an Ethernet network. Ethernet acts as the carrier for internet within short distance networks like a network in a building. The main difference between Internet and Ethernet is security.

Ethernet is safer than the internet as Ethernet is a closed loop and has only limited access. Q 52 Explain Data Encapsulation? Ans Encapsulation means adding one thing on top of the other thing. When a message or a packet is passed through the communication network OSI layers , every layer adds its header information to the actual packet. This process is termed as Data Encapsulation. Note: Decapsulation is exactly the opposite of encapsulation.

The process of removing the headers added by the OSI layers from the actual packet is termed as Decapsulation. Q 53 How are networks classified based on their connections? Ans Networks are classified into two categories based on their connection types. They are mentioned below, Peer-to-peer networks P2P : When two or more computers are connected together to share resources without the use of a central server is termed as a peer-to-peer network. Computers in this type of network act as both server and client.

Generally used in small companies as they are not expensive. Server-based networks: In this type of network, a central server is located to store the data, applications etc of the clients.

The server computer provides the security and network administration to the network. Q 54 Define Pipelining? Ans In Networking when a task is in progress another task gets started before the previous task is finished. This is termed as Pipelining. Q 55 What is an Encoder? Ans Encoder is a circuit that uses an algorithm to convert any data or compress audio data or video data for transmission purpose.

An encoder converts the analog signal into the digital signal. Q 56 What is a Decoder? Ans Decoder is a circuit which converts the encoded data to its actual format. It converts the digital signal into analog signal. Q 57 How can you recover the data from a system which is infected with Virus? Ans In another system not infected with a virus install an OS and antivirus with the latest updates. Then connect the HDD of the infected system as a secondary drive.

Now scan the secondary HDD and clean it. Then copy the data into the system. Q 58 Describe the key elements of protocols?

Ans Below three elements are the key elements of protocols Syntax: It is the format of the data. That means in which order the data is displayed. Semantics: Describes the meaning of the bits in each section. Timing: At what time the data is to be sent and how fast it is to be sent. Q 59 Explain the difference between baseband and broadband transmission? Ans Baseband Transmission: A single signal consumes the whole bandwidth of the cable Broadband Transmission: Multiple signals of multiple frequencies are sent simultaneously.

Conclusion This article is useful for those who are attending the interview on Networking. As networking is a complex topic, one needs to be careful while answering the questions in an interview.

If you go through the interview questions on networking of this article, you can easily face the interview. I hope I have covered almost all the important networking interview questions in this article. Meanwhile, there are several other interview questions that available on the internet which you can dig out as well.

However, I'm sure that if you have a clear understanding of the questions given here, then you can confidently clear any Networking Interview. Good Luck and Happy testing!!!

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