-
What are
the 7 layers in ISO-OSI layer, describe each layer
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Can I remove Session Layer
from ISO_OSI
model..?
-
Can I remove
Session Layer from ISO_OSI model..?
Hem: I said yes.., because there is no session layer in TCP/IP still it
satisfies our requirements
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why data link layer protocol, what are
main functions of it..?
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I am sending
data from machine A to machine C, in between there is an intermediate
machine B, then how
machine B will know that it is not intended for it…
a) In which layer of machine B determines that the data is not for it..?
b)The sending data is divided into packets, does machine B tests all the
packets of that data
c) then what about of other
layers…?
Even data link layer will process both data frames and acknowledge frames,
so there is also data checking ..?
In
networks layer every packet has its routing information and destination
address so is it necessary by machine B to process it..?
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Machine A is
using both Telnet and Ftp protocols in its application layer and is sending
information to machine B’s application layer, then how machine B determines
which bits are related to which protocol…? There is only one single
communication channel and both protocols are used simultaneously
Q) I am using Internet Protocol version 4 (IPv4), but I am receiving data
from a machine which is using IPv6, then
how will the data transformation will takes place and where will it
takes place. Does machine B discards the packet
as it doesn’t know about IPv6
-
What do u mean by
switched virtual circuit and permanent virtual circuit
-
Do u know about
circuit switching…? What r the basic elements
Q. What switches will do in
communication..?Hem:
this will establish path for data transmission
Q) In which layer
switches will come..?Hem: in network layer
Q) If switches will establish
path for data transmission what is the necessity of routers. Do they are
similar
-
I am sending data from one data
link layer to another data link layer, how will u come to know
whether there is error in data transmission..? explain some methods to find
that..?
-
Tell about 1’s and 2’s complement..Both
will perform bitwise
operations then what is the difference betweenthem..?When
will you go for 1’s complement, when will you go for 2’s complement..? Give
one real time example for those two..?
-
Give some real time example for TCP
and UDP protocols…
-
What is difference between #include
in C++ and import statement in Java..?
-
What is difference between #include
in C++ and import statement in Java..?
-
What is the difference between
the following two statements..
-
What are register variables in C,
why those are needed..?
-
I declared 10 register variables, but I have only 6
registers what will happen..?
-
What is virtual function, why we
need it..?
-
What is virtual destructor.. Where will you
use..?
-
What is a process..?
Q. At any time only one process is in execution, so do u mean that there
is no multi programmed operating systems..? if the program under
execution is the
process, then why there are scheduling algorithms…Scheduling
algorithms are there in OS, so there may be more that one process in memory,
does it mean CPU will execute more than one process at a time.
-
Explain about memory management functions
performed by OS
-
Can I have a OS without secondary
memory
-
does it allocate, memory to a process where
there is free memory..?
-
Will OS always follows one of these
algorithms..?
-
How OS comes to know which locations are free
and which are allocated..?
-
what is meant by fragmentation..?
-
How will you remove fragments..?
-
What is meant by compaction..?
-
Is there any relation between
compaction and paging…?
-
What is paged segmentation and
segmented paging..? Differentiate between them..?
-
VX works is selling under the name of real time
OS, but windows is not selling under name of real time OS, where is the
difference..?
-
There are three OS’s namely Unix, VXworks and
some X. They will execute one job in 10ms, 8 ms and 1ms respectively. Can u
say the OS X is real time OS, if yes why..?, if no why..?
-
Which scheduling algorithm is used for real time
operating system..?
-
What is meant by deadlock..?
-
How will u avoid deadlocks..?
what r those four conditions to test..?
-
How will u avoid deadlocks..? what r those four
conditions to test..?
-
A lower process is allocated 2 resources, higher
process came for execution and it needs totally 4 resources and presently 2
are allocated.. what will happen..?
-
What will happen when context switch takes
place… what are the OS activities in context switch.
-
When a low priority process executes its
instructions, high priority process comes what will happen..?
Hem: low priority process is preempted and high priority gets the CPU. After
completion of execution of higher priority process low priority process will
get the cpu.
Q. How OS will know where to start the
execution
-
When Page fault occurs, what are actions taken by cpu at
that time, if there is no memory for page swapping what will happen, is it
need to remove the page from memory..?The page to be removed from memory
now, is bring from hard disk initially, so is it needed to put back into
hard disk once again. If yes why..?
