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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. 6) What are routers. Networking Interview Questions updated on Apr 1. Define Network? A network is a set of devices connected by physical media links. A network is. Generally speaking, larger firms have a more formal interview process involving a by an interview on site. Most of the questions you will be asked are geared.
Computer Hardware Interview Questions. An internet connects the millions of people across the world. Artificial Intelligence Keras. Tableau Talend ZooKeeper. This feature is generally found in Microsoft operating system. Crosstalk is the effect of one wire on the other. A fault tolerance system ensures continuous data availability.
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. 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. A fixed table must be manually modified every time there is a change. Your email address will not be published. Email Address: Save my name, email, and website in this browser for the next time I comment.
Skip to content. Transmission is all about when communication is done and data is transmitted through the communication channel from one place to another. Communication is when full exchange of information with all bit priority, synchronization, clock etc.
What is Full form of ADS? RARP allows the host to discover its internet address after by only knowing its hardware address Physical.
ARP is used to convert network layer addresses to data link layer address. Describe it It is a range of frequency within given band. Ads by Google. I need to PDF. November 15, Reply. November 16, Reply. I want more interview question..
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Jaspreet Kaur. Kalam rana. Q 33 Name the different types of network topologies and brief its advantages? Ans Network Topology is nothing but the physical or logical way in which the devices like nodes, links, and computers of a network are arranged.
Physical Topology means the actual place where the elements of a network are located. Logical Topology deals with the flow of data over the networks. A Link is used to connect more than two devices of a network. And more than two links located nearby forms a topology. The network topologies are classified as mentioned below. As the devices are connected to a single cable, it is also termed as Linear Bus Topology. The advantage of bus topology is that it can be installed easily. And the disadvantage is that if the backbone cable breaks then the whole network will be down.
In Star Topology, there is a central controller or hub to which every node or device is connected through a cable. In this topology, the devices are not linked to each other.
If a device needs to communicate with the other, then it has to send the signal or data to the central hub. And then the hub sends the same data to the destination device. The advantage of the star topology is that if a link breaks then only that particular link is affected. The whole network remains undisturbed. The main disadvantage of the star topology is that all the devices of the network are dependent on a single point hub.
If the central hub gets failed, then the whole network gets down. Data or Signal in ring topology flow only in a single direction from one device to another and reaches the destination node.
The advantage of ring topology is that it can be installed easily. Adding or deleting devices to the network is also easy. The main disadvantage of ring topology is the data flows only in one direction. And a break at a node in the network can affect the whole network.
In a Mesh Topology, each device of the network is connected to all other devices of the network. Mesh Topology uses Routing and Flooding techniques for data transmission. The advantage of mesh topology is if one link breaks then it does not affect the whole network.
And the disadvantage is, huge cabling is required and it is expensive. Ans In data transmission if the sender sends any data frame to the receiver then the receiver should send the acknowledgment to the sender. The receiver will temporarily delay waits for the network layer to send the next data packet the acknowledgment and hooks it to the next outgoing data frame, this process is called as Piggybacking.
Q 36 In how many ways the data is represented and what are they?
Q 38 How a Switch is different from a Hub? Ans The time taken for a signal to reach the destination and travel back to the sender with the acknowledgment is termed as Round Trip time RTT. Ans Brouter or Bridge Router is a device which acts as both bridge and a router. As a bridge, it forwards data between the networks. And as a router, it routes the data to specified systems within a network. 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. A Firewall cannot protect the system from virus, spyware, adware etc.
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.
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? Ans A network can be certified as an effective network based on below-mentioned points,. 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.
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. 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. 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.
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,. Ans In Networking when a task is in progress another task gets started before the previous task is finished. This is termed as Pipelining.
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. 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.