ISRO CS 2011

Question 31

What is the bit rate of a video terminal unit with 80 characters/line, 8 bits/character and horizontal sweep time of 100 μs (including 20 μs of retrace time)?

• 8 Mbps
• 6.4 Mbps
• 0.8 Mbps
• 0.64 Mbps

Question 32

Black Box Software Testing method focuses on the

• Boundary condition of the software
• Control structure of the software
• Functional requirement of the software
• Independent paths of the software

Question 33

How many edges are there in a forest with v vertices and k components?

• (v + 1) − k
• (v + 1)/2 − k
• v − k
• v + k

Question 34

If A and B are square matrices with same order and A is symmetric, then B^TAB

• Skew symmetric
• Symmetric
• Orthogonal
• Idempotent

Question 35

Find the memory address of the next instruction executed by the microprocessor (8086), when operated in real mode for CS=1000 and IP=E000

• 10E00
• 1E000
• F000
• 1000E

Question 36

A fast wide SCSI-II disk drive spins at 7200 RPM, has a sector size of 512 bytes, and holds 160 sectors per track. Estimate the sustained transfer rate of this drive

• 576000 Kilobytes / sec
• 9600 Kilobytes / sec
• 4800 Kilobytes / sec
• 19200 Kilobytes / sec

Question 37

Two control signals in microprocessor which are related to Direct Memory Access (DMA) are

• INTR & INTA
• RD & WR
• S0 & S1
• HOLD & HLDA

Question 38

If a microcomputer operates at 5 MHz with an 8-bit bus and a newer version operates at 20 MHz with a 32-bit bus, the maximum speed-up possible approximately will be

• 2
• 4
• 8
• 16

Question 39

The search concept used in associative memory is

• Parallel search
• Sequential search
• Binary search
• Selection search

Question 40

Which variable does not drive a terminal string in grammar? S -> AB A -> a B -> b B -> C

• A
• B
• C
• S