55983389 Networking Question Answer Interview

8/13/2019 55983389 Networking Question Answer Interview

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What are the difference between hub and switch?

Hub is a layer 1 device. It will out the signal from all of its port except the one from where its insert. Itis unable to detect the collision. It works on single collision and single broadcast domain.Switchis layer 2 device. It maintains a CAM table that store the MAC address of devices attached onits port. CAM table is used to make the forwarding decision. It works on per port collision and single

broadcast domain.

What is layer?

ayer is a completely logical partition of !"# $protocol data unit% process. &hat define how theinformation is travel form one computer to other over the network.

What is TCP/IP?

It is combination of two protocols &C! and I!. It is used for reliable data transfer.

What is operating system?

An operating system $sometimes abbreviated as '()'% is the program that* after being initially loadedinto the computer by a boot program* manages all the other programs in a computer. It provides aplatform to application software.

What is package software?

&he collection of mostly used software released in package +orm Company. +or ,xample Ms-(fficethat contain word* power point* ,xcel* etc.

Full form of coin! com C"#- '.com' stands for 'commercial'.

$%T - '.net' stands for 'network'

"&' - '.org' stands for 'organiation'

I$F" - '.info' stands for 'information'

(I) - '.bi' stands for 'business'.

I$ - /I0/ stands for India. &he /I0/ is a 2-letter country code for India.

What is ring topology?

In a ring topology* device one connects to device two* device two connects to device three* and so on tothe last device* which connects back to device one.

Which cable is used in *+$?

enerally coaxial and &! media is used in A0 networking.


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What are ,ifference between -TP and .TP?

STP cableis mostly used by IM3 it has an extra cover over each pair..TP cable is used in star topology. It has a single cover over all pair.

What is I%%%?

&heInstitute of Electrical and Electronics Engineersor I,,, $read eye-triple-e% is an internationalnon-profit* professional organiation for the advancement of technology related to electricity. It has themost members of any technical professional organiation in the world* with more than 456*777members in around 167 countries.

What is 012?

I%%% 012 is a collection of I,,, standards defining the physical layer and the media access control$MAC% of the data link layer of wired ,thernet. !hysical connections are made between nodes andinfrastructure devices hubs* switches and routers by various types of copper or fiber cable.

Full form of ping

!I0 stand for Packet Internet Grouper

What are the minimum re3uirements for 4p installation?

58M 9AM1.6 free :"" space244M: minimum processor.

What are 50(ase1! 50(ase6 and 50(aseT %thernet *+$s?

10Base2 An ,thernet term meaning a maximum transfer rate of 17 Megabits per second that usesbaseband signaling* with a contiguous cable segment length of 177 meters and a maximum of 2segments.10BaseAn ,thernet term meaning a maximum transfer rate of 17 Megabits per second that usesbaseband signaling* with 6 continuous segments not exceeding 177 meters per segment.10BaseTAn ,thernet term meaning a maximum transfer rate of 17 Megabits per second that usesbaseband signaling and twisted pair cabling.

What is the difference between an unspecified passi7e open and a fully specifiedpassi7e open?

!n unspecified passi"eopen has the server waiting for a connection re;uest from a client.! full# specified passi"e openhas the server waiting for a connection from a specific client.

%4plain the function of Transmission Control (lock

A &C is a complex data structure that contains a considerable amount of information about eachconnection.


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What is a #anagement Information (ase 8#I(9?

A Management Information ase is part of every )0M!-managed device. ,ach )0M! agent has theMI database that contains information about the device/s status* its performance* connections* andconfiguration. &he MI is ;ueried by )0M!.

What is anonymous FTP and why would you use it?Anonymous +&! enables users to connect to a host without using a valid login and password. #sually*anonymous +&! uses a login called anonymous or guest* with the password usually re;uesting theuser/s I" for tracking purposes only. Anonymous +&! is used to enable a large number of users toaccess files on the host without having to go to the trouble of setting up logins for them all. Anonymous+&! systems usually have strict controls over the areas an anonymous user can access.

What is a pseudo tty?

A pseudo tty or false terminal enables external machines to connect through &elnet or rlogin. >? 9un >>? regwi @r

Where do we use cross and standard cable?

Computer to computer >>? cross)witch@hub to switch@hub >>?crossComputer to switch@hub >>?standard


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How many pins do serial ports ha7e?

In computer its known as com port and could be available in Bpin or 26 pin. (n router it have 57 pins.

How will check ip address on :?

)tart >>? 9un >>? command >>? winipcfg

How will you make partition after installing windows?

My computer >>? right click >>? manage >>? disk management >>?select free space >>? right click >>? 0ew partition

What is IP?

Its a uni;ue 42 bits software address of a node in a network.

What is pri7ate IP?

&hree ranges of I! addresses have been reserved for private address and they are not valid for use onthe Internet. If you want to access internet with these address you must have to use proxy server or0A& server $on normal cases the role of proxy server is played by your I)!.%.If you do decide toimplement a private I! address range* you can use I! addresses from any of the following classesClass A 17.7.7.7 17.266.266.266Class 1D2.15.7.7 1D2.41.266.266Class C 1B2.15E.7.7 1B2.15E.266.266

What is public IP address?

A public I! address is an address leased from an I)! that allows or enables direct Internetcommunication.

What;s the benefit of subnetting?

9educe the sie of the routing tables.9educe network traffic. roadcast traffic can be isolated within a single logical network.!rovide a way to secure network traffic by isolating it from the rest of the network.

What are the differences between static ip addressing and dynamic ip addressing?


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subnet mask of 266.266.7.7.

What are the *#H"-T- files?

&he M:()&) file is a static method of resolving 0etI() names to I! addresses in the same waythat the :()&) file is a static method of resolving domain names into I! addresses. An M:()&) fileis a text file that maps 0etI() names to I! addresses3 it must be manually configured and updated.

What is ,HCP scope?

A scope is a range* or pool* of I! addresses that can be leased to ":C! clients on a given subnet.

What is F>? start up type >>?automatic

What is +cti7e ,irectory?Active "irectory is a network-based obJect store and service that locates and manages resources* andmakes these resources available to authoried users and groups. An underlying principle of the Active"irectory is that everything is considered an obJectKpeople* servers* workstations* printers*documents* and devices. ,ach obJect has certain attributes and its own security access control list$AC%.


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Advantage!erformance is fast.Availability is high because of the redundancy features available."istances can span up to 17 kilometers.Management is easy because of the centraliation of data resources.(verhead is low $uses a thin protocol%.

"isadvantage of )A0s is their cost.IntranetAn intranet is basically a network that is local to a company. In other words* users fromwithin this company can find all of their resources without having to go outside of the company. Anintranet can include A0s* private


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What are the three type of routing tables and What are the ad7antages anddisad7antages of these?

&he three types of routing tables are fixed* dynamic* and fixed central.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 manualmaintenance.A fixed central table lets a manager modify only one table* which is then read by other devices. &hefixed central table reduces the need to update each machine/s table* as with the fixed table. #sually adynamic table causes the fewest problems for a network administrator* although the table/s contents canchange without the administrator being aware of the change.

What is source route?

It is a se;uence of I! addresses identifying the route a datagram must follow. A source route mayoptionally be included in an I! datagram header.

What is &IP 8&outing Information Protocol9?It is a simple protocol used to exchange information between the routers.

What is -*IP 8-erial *ine Interface Protocol9?

It is a simple protocol used for transmission of I! datagrams across a serial line.

What is Pro4y +&P?

It is using a router to answer A9! re;uests. &his will be done when the originating host believes that adestination is local* when in fact is lies beyond router.

What is "-PF?

It is an Internet routing protocol that scales well* can route traffic along multiple paths* and usesknowledge of an Internet/s topology to make accurate routing decisions.

What is >erberos?

It is an authentication service developed at the Massachusetts Institute of &echnology. Gerberos usesencryption to prevent intruders from discovering passwords and gaining unauthoried access to files.

What is a #ultihomed Host?It is a host that has a multiple network interfaces and that re;uires multiple I! addresses is called as aMultihomed :ost.

What is $=T 8$etwork =irtual Terminal9?

It is a set of rules defining a very simple virtual terminal interaction. &he 0N& is used in the start of a&elnet session.


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What is 'atewayto'ateway protocol?

It is a protocol formerly used to exchange routing information between Internet core routers.

What is ('P 8(order 'ateway Protocol9?

It is a protocol used to advertise the set of networks that can be reached with in an autonomous system.

! enables this information to be shared with the autonomous system. &his is newer than ,!$,xterior ateway !rotocol%.

What is autonomous system?

It is a collection of routers under the control of a single administrative authority and that uses acommon Interior ateway !rotocol.

What is %'P 8%4terior 'ateway Protocol9?

t is the protocol the routers in neighboring autonomous systems use to identify the set of networks that

can be reached within or via each autonomous system.

What is I'P 8Interior 'ateway Protocol9?

It is any routing protocol used within an autonomous system.

What is #ail 'ateway?

It is a system that performs a protocol translation between different electronic mail delivery protocols.

What is widemouth frog?


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What is traffic shaping?

(ne of the main causes of congestion is that traffic is often busy. If hosts could be made to transmit at auniform rate* congestion would be less common. Another open loop method to help manage congestionis forcing the packet to be transmitted at a more predictable rate. &his is called traffic shaping.

What is packet filter?!acket filter is a standard router e;uipped with some extra functionality. &he extra functionality allowsevery incoming or outgoing packet to be inspected. !ackets meeting some criterion are forwardednormally. &hose that fail the test are dropped.

55983389 Networking Question Answer Interview

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