UGC NET PAPER 2 COMPUTER SCIENCE – SET 40

By Atul Sahu • UGC NET PAPER 2 COMPUTER SCIENCE

UGC NET PAPER 2 COMPUTER SCIENCE – SET 40

Period: DEC 2014

781. If f(x)=x⁴, g(x)=x²+1, h(x)=x²+72, find h∘(g∘f)(x) and (h∘g)∘f(x).

Discrete Structures and Optimization • Functions • DEC 2014

A. x⁸–71 and x⁸–71 B. x⁸–73 and x⁸–73 C. x⁸+71 and x⁸+71 D. x⁸+73 and x⁸+73

782. Tree with degrees 4,4,3,2 and rest 1. Total vertices?

Discrete Structures and Optimization • Graph theory • DEC 2014

A. 5 B. n–3 C. 20 D. 11

783. Consider the graph shown below. This graph is a ________.

Discrete Structures and Optimization • Graph theory • DEC 2014

A. Complete Graph B. Bipartite Graph C. Hamiltonian Graph D. All of the above

784. Negation of “−2≤x≤−1 or 1≤x≤2” is ?

Discrete Structures and Optimization • Predicate logic • DEC 2014

A. x<−2 or x>2 or −1 B. x<−2 or x>2 C. −1 D. x≤−2 or x>2 or −1

785. A program picks k∈{1…10^6} 10^6 times. P(k=1 at least once)?

Discrete Structures and Optimization • Probability • DEC 2014

A. 0.5 B. 0.704 C. 0.632121 D. 0.68

786. Which is NOT required for critical-section solution?

Operating System • Concurrency • DEC 2014

A. No assumptions on CPU speeds/number B. No two in CS simultaneously C. Non-CS may block others D. No starvation

787. Two-level CPU scheduling is used because ___.

Operating System • CPU Scheduling • DEC 2014

A. memory too small for all ready processes B. performance equals FIFO C. allows choosing in-core processes D. does not allow adjusting in-core set

788. Debugger is a program that ___.

Operating System • Debugging Tools • DEC 2014

A. examines/modifies registers B. cannot execute a segment C. sets breakpoints, executes, displays regs D. All of the above

789. A directory can be viewed as a ___ translating filenames to entries.

Operating System • File systems • DEC 2014

A. Symbol table B. Partition C. Swap space D. Cache

790. Editor uses 200 K text (shared), 15 K stack, 50 K init data, 70 K bootstrap. Five instances need physical memory = ___.

Operating System • Memory Management • DEC 2014

A. 1135 K B. 335 K C. 1065 K D. 320 K

791. Paging: avg process size x, page size y, entry size z. Optimum page size minimizing overhead is ___.

Operating System • Memory Management • DEC 2014

A. x/2 B. xz/2 C. 2xz D. xz²

792. Demand paging: fault service=8 ms if no write, 20 ms if write (70% writes). Avg time = ___ ms?

Operating System • Memory Management • DEC 2014

A. 11.6 B. 16.4 C. 28 D. 14

793. char *(*(*a[N])())(); declares ___.

Programming Languages • C declarations • DEC 2014

A. ptr to func returning array of N ptrs to func returning char * B. func returning array of N ptrs to func returning char * C. array of N ptrs to func returning char * D. array of N ptrs to func returning ptr to func returning char *

794. Output of printf("%d",1+x++); when x=128?

Programming Languages • C precedence • DEC 2014

A. 128 B. 129 C. 130 D. 131

795. When an array is passed to a function, which is correct?

Programming Languages • Function calls • DEC 2014

A. Function can change original array B. In C, pass-by-value prevents change C. Compilation error D. Run-time error

796. Which is not a class member in C++?

Programming Languages • OOP in C++ • DEC 2014

A. Static function B. Friend function C. Const function D. Virtual function

797. What differentiates overloaded vs overridden functions?

Programming Languages • OOP in C++ • DEC 2014

A. Overloading runtime, overriding compile-time B. Overloading compile-time, overriding runtime C. Redefining in friend = overloading; in derived = overriding D. Redefining in derived = overloading; in friend = overriding

798. How many PUSH and POP ops to evaluate (AB)+(CD/E) in RPN?

Programming Languages • Stacks • DEC 2014

A. 4 PUSH & 3 POP B. 5 PUSH & 4 POP C. 6 PUSH & 2 POP D. 5 PUSH & 3 POP

799. The software ___ is the structure of components, their properties & relationships.

Software Engineering • Architecture • DEC 2014

A. Design B. Architecture C. Process D. Requirement

800. MIS is characterized by :

Software Engineering • Information systems • DEC 2014

A. Guidance for decisions B. Aggregates predictable data C. High‐volume capture D. Efficient data movement

Disclaimer for MCQ Quiz
This quiz is for educational purposes only…

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UGC NET PAPER 2 COMPUTER SCIENCE – SET 40

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