Networking interview questions with answers pdf

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Technical interview questions and answers section on "Networking" with can download Networking quiz questions with answers as PDF files and eBooks. This interview section questions contains a brief introduction to the Computer networks. Contains Important Computer networks Interview Questions with Answers Questions and Answers PDF | Interview Questions in Computer Networks. Get here latest Computer Networking Interview Questions and also download computer networks interview questions with answers pdf.

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Networking Interview Questions updated on Apr 1. Define Network? A network is a set of devices connected by physical media links. A network is. Download basic networking interview questions and answers pdf for freshers and experienced which explain all networking concepts and commands ppt. Have you worked with building and maintaining networks? . Adapted from: “Ten Tough Interview Questions and Ten Great Answers,”

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October 4, Reply. Anoop Badiger. PLZ send me basic networking interview questions October 7, Reply. I need all basics question for networking,desktop,server October 18, Reply. A technique called piggybacking is used to improve the efficiency of the bidirectional protocols. When a frame is carrying data from A to B, it can also carry control information about arrived or lost frames from B; when a frame is carrying data from B to A, it can also carry control information about the arrived or lost frames from A.

What are the two types of transmission technology available? What is Bandwidth? Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth. What is subnet? A generic term for section of a large networks usually separated by a bridge or router. What is MAC address? What is multiplexing? Multiplexing is the process of dividing a link, the phycal medium, into logical channels for better efficiency.

Here medium is not changed but it has several channels instead of one. What is simplex? It is the mode of communication between two devices in which flow of data is unidirectional. What is half-duplex? It is the mode of communication between two devices in which flow of data is bi-directional but not at the same time.

What is full duplex?

Networking - Interview Questions and Answers

It is the mode of communication between two devices in which flow of data is bi-directional and it occurs simultaneously. Here signals going in either direction share the capacity of the link. What is sampling? It is the process of obtaining amplitude of a signal at regular intervals. What is Asynchronous mode of data transmission? It is a serial mode of transmission. In this mode of transmission, each byte is framed with a start bit and a stop bit. There may be a variable length gap between each byte.

What is Synchronous mode of data transmission? In this mode of transmission, bits are sent in a continuous stream without start and stop bit and without gaps between bytes. Regrouping the bits into meaningful bytes is the responsibility of the receiver. What are the different types of multiplexing?

Multiplexing is of three types. Frequency division multiplexing and wave division multiplexing is for analog signals and time division multiplexing is for digital signals. What are the different transmission media? The transmission media is broadly categorized into two types i Guided media wired i Unguided media wireless.

What are the duties of data link layer? Data link layer is responsible for carrying packets from one hop computer or router to the next.

Networking - Interview Questions and Answers

The duties of data link layer include packetizing, adderssing, error control, flow control, medium access control. What are the types of errors? Errors can be categorized as a single-bit error or burst error. A single bit error has one bit error per data unit. A burst error has two or more bits errors per data unit. What do you mean by redundancy? Redundancy is the concept of sending extra bits for use in error detection. Three common redundancy methods are parity check, cyclic redundancy check CRC , and checksum.

Define parity check. In parity check, a parity bit is added to every data unit so that the total number of 1s is even or odd for odd parity. Simple parity check can detect all single bit errors. It can detect burst errors only if the total number of errors in each data unit is odd. In two dimensional parity checks, a block of bits is divided into rows and a redundant row of bits is added to the whole block. Define cyclic redundancy check CRC. C RC appends a sequence of redundant bits derived from binary division to the data unit.

The divisor in the CRC generator is often represented as an algebraic polynomial. What is hamming code?

The hamming code is an error correction method using redundant bits. The number of bits is a function of the length of the data bits. By rearranging the order of bit transmission of the data units, the hamming code can correct burst errors. Define stop and wait ARQ. In stop and wait ARQ, the sender sends a frame and waits for an acknowledgement from the receiver before sending the next frame. What do you mean by network control protocol? Network control protocol is a set of protocols to allow the encapsulation of data coming from network layer protocol that requires the services of PPP.

What do you mean by CSMA? To reduce the possibility of collision CSMA method was developed. What do you mean by Bluetooth?

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It is a wireless LAN technology designed to connect devices of different functions such as telephones, notebooks, computers, cameras, printers and so on. What is IP address? The internet address IP address is 32bits that uniquely and universally defines a host or router on the internet.

The portion of the IP address that identifies the network is called netid. The portion of the IP address that identifies the host or router on the network is called hostid.

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It is the method used to solve the channel allocation problem. It is used for: It is of two types: Pure aloha 2. Slotted aloha. What is Firewalls? It is an electronic downbridge which is used to enhance the security of a network. What is Repeaters? A receiver receives a signal before it becomes too weak or corrupted,regenerates the original bit pattern,and puts the refreshed copy back onto the link.

It operates on phycal layer of OSI model. What is Bridges? They divide large network into smaller components. They can relay frames between two originally separated LANs. They provide security through partitioning traffic. They operate on physical and data link layer of OSI model. What is ICMP? It also handles both control and error messages. These computers are linked together. The most common types of networks are:. Basically, the network is a connection made through the connecting links between two or more devices.

You can even call it as the line configuration. It happens within a secure ,password protected network. Here all nodes are connected to a hub. Packets sent to the hub. Again packets are sent by Hub to the destination.

Token is used for transferring data from computers. These are the larger one connections of networks. How do we connect two devices? By the help of connecting links only. The connecting links are nothing but the protocols which are used to make the computers or other devices communicate each. In the very simple language with the help of protocols, only two devices can communicate with each other.

Devices can be anything like computers, printer, mobile devices. These devices in networking or even called as nodes. Basically, there are two ways through which the devices can connect to each other. You can call point to point connection as the special case of multipoint connection.

When the connection link is used to by Mamy receivers it is called as multipoint or multi-drop configuration.