Religion Hardware Interview Questions And Answers For Freshers Pdf


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Common Interview Questions for Computer. Networking and Information Security Majors. Interviewing with companies for IT positions, whether large or small. 2 Updated: Top 10 hardware interview questions with answers To: .. prepare • 45 Fresher hardware interview questions and answers 57; Top 36 hardware interview questions with answers pdf 1. The number of hardware networking job opportunities for freshers is expected to grow extensively.

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.

Computer Hardware Interview Questions & Answers

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.

Hardware and Networking Interview Questions & Answers

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.

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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.

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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.

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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. A dynamic table changes its information based on network traffic, reducing the amount of manual maintenance.

A fixed central table lets a manager modify only one table, which is then read by other devices. The fixed central table reduces the need to update each machine's table, as with the fixed table.

Usually a dynamic table causes the fewest problems for a network administrator, although the table's contents can change without the administrator being aware of the change. What Is Region? Hardware and Networking Related Tutorials Node.

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The root label is a null string empty string.

Computer Hardware Interview Questions & Answers

In this tree, all the labels have a different name, which guarantee the uniqueness of the domain names. A full domain name is a sequence of labels separated by dots. The domain names are always read from the node up to the root. A PQDN starts from a node, but it does not end with the root. Describe attenuation, distortion, and noise in brief A. Attenuation: When a signal travels through a medium, it loses some of its energy due to resistance of the medium. This loss of energy is called the Attenuation.

This is the reason why a wire carrying electric signals gets warm. Some of the electrical energy in the signal is converted to heat. To overcome this problem, amplifiers are used to amplify the signal.

Unit of the decibel is used to find out if a signal has lost or gained strength.The different types of storage devices are:. Try not to smoke or eat right before the interview -- and if possible, brush your teeth or use mouthwash. Enables the processor to do multiple programs simultaneously by fast switching through the programs.

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