Interview questions based on important concepts in computer network.

Interview questions based on important concepts in computer network.
Question 1
Can you guess why IPv6 (Internet Protocol version 6) addresses came into existence while still IPv4 is being used by many machines?
Answer :
The only reason could be the enormous growth in the number of machines using v4 addresses. This forces concerned agencies to raise the address pool by some means. One of such ways was the introduction of IPv6 so that more machines can be accommodated.
Question 2
Consider two network layer devices, one operating at network layer and the other operating at data link layer. In very generic terms, which one is more intelligent ? Explain with example.
Answer :
Generally a device that operates at a higher layer in OSI model is intelligent. For example, there are switches that operate at data link layer and some others that operate at network layer. Simply due to the additional capabilities of the switches that operate in network layer they can be considered more intelligent.
Question 3
What is the main drawback when using Hubs in networks ?
Answer :
Hubs are least intelligent devices transmitting whatever data they receive into all the output ports. Though this behaviour can be favourable in some cases, most of the times this behaviour results in unnecessary traffic in the network. More network consumption leads to problems like collision and congestion.
Question 4
In socket communication happening between a client and a server, how can you tell which one is a client and which is a sever ?
Answer :
Consider two network devices communicating through network sockets. In many cases a client initiates a transaction. For example, your computer could request a web page from a server. This implies that your computer is initiating the connection and is a client. The responding machine will be the server

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10th 3i InfoTech Academic Books Accenture ACIO ActiveX ADT Agricultural AIEEE Air Force Algebraic Amdocs Android Answers Application Development Aptitude Aptitude Questions Architectures ASP ATOS B.Sc B.Tech.B.E. Bank Exam BCA BE Board Exam Books break-continue Business Plan C C Programming C# C++ Campus campus interview Candidate profile Capgemini Career CDS Certification CET Challenge Circle Cisco class code Cognizant communication Company Company Profile Competitive Exams computer Computer Networks concentric circles constructor Course Credit Suisse CSS CTS Data Structure DBMS DC Deloitte difficult interview questions dimensions Distributed Computing do while dotNet Download ds Dynamic Web Development e-Admit card Educational engineering entertainment Even Odd Events exam schedule exception for loop fresher GATE general Discussion general knowledge Get Placed Government Job Hall Ticket HCL how to answer How to Prepare HR HR Interview HSC hypertext preprocessor IB IBM IBPS IIT Indian Army Information infosys Intelligence Bureau Internship interview Experience interview questions Interview Tips IntroC IntroC# IntroJava IntroPHP IT J2EE J2ME Java JavaScript jobs Language Books Language Tutorial Languages limit number of objectsJava Limit the number of objects being created in JAVA Linux Linux Administrator Linux Developer Logical Questions loops M Tech M.E. M.Tech M.Tech AND B.Tech Management Management Skills Matrices MBA mca ME microsoft mistakes Mixture Mobile Computing mock questions mock test MySql naukri NDA OOP opening Operating System Oracle paper Persistent PHP php programming php string variables PL/SQL Placement placement guide Placement Paper Placement Process preparing for placement presentation probability Problems Professional program Programming Project Engineer project idea Projects Puzzle qualities Question of the day Questions Quiz Question Recruitment Recruitment Pattern Requirement Result Resume Reviews Screen Sizes Scripting Session Skills Software Software Engineering solved papers Source Code Speed time and distance SQL SSC story Stress Interview Study Material study tips submit resume Synonym TCS Tech Mahindra tech news Technical Books Technical Interview Testing thank you letter Thought Time Table TutC++ Unix questions asked in aptitude and inteviews for MCA UPSC verbal Web Designing Web Developer Website Development What to read while loop Wipro Writing Resume