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Compaq Placement  Paper Technical


->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 Multi-pgm. enviornment what you should do?

->Which one you will use to implement critical section? Binary Semaphore

-> Which one is not needed for Multi-pgm. 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 client-server application?

options are  tcp/ip, message passing, rpc, none of theabove.

->Term stickily bit is related to
  a)kernel b)undeletable file c) 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


->x.25 protocol encapsulates the follwing layers




d)all of the above

e)none of the above

->TCP/IP can work on





->a node has the ip address and 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 " " " " "


->the OSI layer from bottom to top

->for an application which exceeds 64k the memory model should be





->the condition required for dead lock in unix sustem is

->set-user-id is related to (in unix)

->bourne shell has

a)history record




->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 LANand protocol insensitive

b)router " " " " "

c)gateway " " " " "

d)none of the above

->const char *

char * const

What is the differnce between the above tow?.

->In Unix inter process communication take place using?.

->About i-node numbers

->Max relaxable permisssion value with out giving write permission to others?.

->About ln(linking)

->Linking across directories?.

->process id for kernell process

->very first process created by kernell

->function to repaint a window immediately?.

->Function entry for DLL in win3.1

->win 3.1 is a

->win 3.1 supports which type of multi tasking?.

->Message displayed when a window is destroyed

->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?.


->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 command-line 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")"?





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