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Home » Placement Papers » Verizon Placement Papers » Verizon Placement Paper

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Verizon Placement Paper


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Verizon Paper

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? tcp/ip,message passing,rpc,none of the above.

 

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

 

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

 

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

 

bourne shell has

 

a)history record

 

b)

 

c)

 

d)

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 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?.

 

----------------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 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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