Important Interview Questions (Network, Testing, Technical and C, C++)

• Why paging is used ?
• Which is the best page replacement algo and Why ?
• WHat is software life cycle ?
• How much time is spent usually in each phases and why ?
• What is testing ?
• Which are the different types of testing ?
• Which are the different phases in Software life cycle (asked again)
• Why is analysis and testing phases very important ?
• Why networks are layered ? What is the advantage of that ?
• How many layers are there in OSI ? Why is it called OSI model ?
• Network topologies ?
• Which are the different network toplogies ?
• An example of bus type network.
• What is the Bandwidth of ethernet ?
• Explain the advantage and disadvantage of ethernet ?
• Which is the protocol used in ethernet. (CSMA/CD) Why is it called so ?
   
• What is the advantage of Ring network ?
  Compare it with ethernet.
   
• What is inheritance, encapsulation etc.
• If there are too many page faults what is the problem?
• To ensure one pgm. doesnt corrupt other pgm. in a Multipgm. enviornment
• What you should do?
• Which one you will use to implement critical section? Binary Semaphore
• Which one is not needed for Multipgm. enviornment?
• Options are: virtual memory,security,time sharing,none of the above.
• Which one is not done by Data link layer ? bit stuffing, LRC,CRC,parity check
• Which one is not related to Data link layer?
• Which one is not suitable for clientserver application? tcp/ip,message passing,rpc,none of the above.
   
• Term stickily bit is related to
  a)kernel     b)undeletable file     c)deletable file     d)none
   
• Semaphore variable is different from ordinary variable by ?
   
• Unix system is
  a)multi processing
  b)multi processing ,multiuser
  c)multi processing ,multiuser,multitasking
  d)multiuser,multitasking
   
• x.25 protocol encapsulates the follwing layers
  a)network
  b)datalink
  c)physical
  d)all of the above
  e)none of the above
   
• TCP/IP can work on
  a)ethernet
  b)tokenring
  c)a&b
  d)none
   
• A node has the ip address 138.50.10.7 and 138.50.10.9.But it is transmitting data from node1 to node2only. The reason may be
  a)a node cannot have more than one address
  b)class A should have second octet different
  c)classB " " " " "
  d)a,b,c
   
• The OSI layer from bottom to top for an application which exceeds 64k the memory model should be
  a)medium
  b)huge
  c)large
  d)none
   
• The condition required for dead lock in unix sustem is
  Setuserid is related to (in unix)
   
• Wrong statement about c++
  a)code removably
  b)encapsulation of data and code
  c)program easy maintenance
  d)program runs faster
   
• Which is true
  a)bridge connects dissimiler LAN and protocol insensitive
  b)router " " " " "
  c)gateway " " " " "
  d)none of the above
   
• const char *
  char * const
  What is the differnce between the above two?.
   
• About fork()?
• About send message and post message
• Message to limit the size of window
• System call executable binary file intoa process
• About GDI object?.
• API used to hide window
• Initialize contents of a dialog?.

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C SKILL SET:-

•  How do you write a program which produces its own source code as its output?
•  How can I find the day of the week given the date?
•  Why doesn't C have nested functions?
•  What is the most efficient way to count the number of bits which are set in a value?
•  How can I convert integers to binary or hexadecimal?
•  How can I call a function, given its name as a string?
•  How do I access commandline arguments?
•  How can I return multiple values from a function?
•  How can I invoke another program from within a C program?
•  How can I access memory located at a certain address?
•  How can I allocate arrays or structures bigger than 64K?
•  How can I find out how much memory is available?
•  How can I read a directory in a C program?
•  How can I increase the allowable number of simultaneously open files?
•  What's wrong with the call "fopen("c:\newdir\file.dat", "r")"?