NIELIT Scientific/ Technical Assistant Paper 2017

National Informatics Centre Scientific/ Technical Assistant Paper 2017

Correct expression for UDP user datagram length is
(a) length of UDP = length of IP – lenght of IP header’s
(b) length of UDP = length of UDP – lenght of UDP header’s
(c) length of UDP = length of IP + lenght of IP header’s
(d) length of UDP = length of UDP + lenght of UDP header’s

In binary search tree which traversal is used for getting ascending order values?
(a) Inorder
(b) Preorder
(c) Postorder
(d) None of the options

The automaton which allows transformation to a new state without consuming any input symbols –
(a) NFA
(b) DFA
(c) NFA-I
(d) All of the options

Complement of a DFA can be obtained by
(a) making starting state as final state
(b) make final as a starting state
(c) making final states non-final and non-final as final
(d) None of the options

Concatenation Operation refers to which of the following set operations
(a) Union
(b) Dot
(c) Kleene
(d) None of the options

Which of the following statement is true?
(a) Melay and Moore machine are language acceptors
(b) Finite State automata is language translator
(c) NPDA is more powerful than DPDA
(d) Melay machine is more powerful than Moore machine

If file size is large and if it is to be accessed randomly then which of the following allocation strategy should be best to use in a system?
(a) Linked allocation
(b) Indexed allocation
(c) Contiguous allocation
(d) None of the options

Microprocessors are used in which generation of computers?
(a) First Generation
(b) Second Generation
(c) Third Generation
(d) Fourth Generation

Operating System maintains the page table for
(a) each process
(b) each thread
(c) each instruction
(d) each address

Closed-Loop control mechanism try to
(a) Remove congestion after it occurs
(b) Remove congestion after sometime
(c) Prevent congestion before it occurs
(d) Prevent congestion before sending packets