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Which of the following statements about synchronous and asynchronous I/O is NOT true? An ISR is invoked on completion of I/O in synchronous I/O but not in asynchronous I/O In both synchronous and asynchronous I/O, an ISR (Interrupt Service Routine) is invoked after completion of ... /O, the process waiting for the completion of I/O is woken up by the ISR that is invoked after the completion of I/O
1 vote
3
The hands of a clock are observed continuously from 12:45 p.m. onwards. They will be observed to point in the same direction some time between (A) 1:03 p.m. and 1:04 p.m. ; (B) 1:04 p.m. and 1:05 p.m. ; (C) 1:05 p.m. and 1:06 p.m. ; (D) 1:06 p.m. and 1:07 p.m.
4
Repeated execution of simple computation may cause compounding of round-off errors syntax errors run-time errors logic errors
1 vote
5
Overlaying requires use of a loader allows larger programs, but requires more effort is most used on large computers is transparent to the user
1 vote
6
Relative to the program translated by a compiler, the same program when interpreted runs Faster Slower At the same speed May be faster or slower
7
An interrupt in which the external device supplies its address as well as the interrupt requests is known as vectored interrupt maskable interrupt non maskable interrupt designated interrupt
8
If a square matrix A satisfies $A^TA=I$, then the matrix $A$ is Idempotent Symmetric Orthogonal Hermitian
9
The join operation can be defined as a cartesian product of two relations followed by a selection a cartesian product of two relations a union of two relations followed by cartesian product of the two relations a union of two relations
1 vote
10
The address space of 8086 CPU is one Megabyte 256 Kilobytes 1 K Megabytes 64 Kilobytes
11
The term Phong associated with Ray tracing shading Hiddenline removal a game
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Range of IP Address from 224.0.0.0 to 239.255.255.255 are Reserved for loopback Reserved for broadcast Used for multicast packets Reserved for future addressing
13
IEEE 802.11 is standard for Ethernet Bluetooth Broadband Wireless Wireless LANs
14
In UML diagram of a class state of object cannot be represented state is irrelevant state is represented as an attribute state is represented as a result of an operation
1 vote
15
A task in a blocked state is executable is running must still be placed in the run queues is waiting for some temporarily unavailable resources
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Ring counter is analogous to Toggle Switch Latch Stepping Switch S-R flip flop
1 vote
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Virtual memory is Part of Main Memory only used for swapping A technique to allow a program, of size more than the size of main memory, to run Part of secondary storage used in program execution None of these
19
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them? Partitioning Multi-tasking Windowing Paging
20
Phase transition for each bit are used in Amplitude modulation Carrier modulation Manchester encoding NRZ encoding
1 vote
21
An Ethernet hub functions as a repeater connects to a digital PBX connects to a token-ring network functions as a gateway
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The principal of the locality of reference justifies the use of virtual memory interrupts main memory cache memory
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The term &lsquo;aging&rsquo; refers to booting up the priority of the process in multi-level of queue without feedback. gradually increasing the priority of jobs that wait in the system for a long time to remedy infinite blocking keeping track of the following a ... letting job reside in memory for a certain amount of time so that the number of pages required can be estimated accurately.
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What is routing algorithm used by OSPF routing protocol? Distance vector Flooding Path vector Link state
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How many states are there in a minimum state deterministic finite automaton accepting the language $L = \{w \mid w \in \{0,1\}^*,$ number of 0's is divisible by 2 and number of 1's is divisible by 5, respectively $\}$? 7 9 10 11
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What is the output of the following C program? #include<stdio.h> #define SQR(x) (x*x) int main() { int a; int b=4; a=SQR(b+2); printf("%d\n",a); return 0; } 14 36 18 20
IEEE 1394 is related to $RS-232$ $USB$ Firewire PCI