कम्प्युटर ज्ञान – Computer Knowledge MCQ
कम्प्युटर ज्ञान – IT प्रवेश
Computer Knowledge · IT Entrance – B.Sc. CSIT, BIT & BCA · ४०७ प्रश्न
४०७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कम्प्युटर ज्ञान: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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The product of binary 10110 and decimal 3, written in octal, is:
सही उत्तर: ग) 102
10110₂ = 22; 22 × 3 = 66; 66 = 1×64 + 0×8 + 2, i.e. 102₈.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In Excel, A1 contains 7 and B1 contains 12. What does =IF(AND(A1>5, B1<10), "OK", "NO") return?
सही उत्तर: क) NO
A1 > 5 is TRUE but B1 < 10 is FALSE, so AND gives FALSE and IF returns "NO".
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following addresses can be assigned to a host in the subnet 192.168.10.0/26?
सही उत्तर: घ) 192.168.10.62
A /26 block holds 64 addresses, 192.168.10.0 to .63; .0 is the network address and .63 the broadcast, so usable hosts are .1 to .62 (.64 is in the next subnet).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Processes P1 (burst 10 ms) and P2 (burst 4 ms) arrive at time 0 in that order. Under Round Robin scheduling with a time quantum of 4 ms, at what time does P1 finish?
सही उत्तर: घ) 14 ms
P1 runs 0–4, P2 runs 4–8 and finishes, then P1 runs 8–12 and 12–14; P1 finishes at 14 ms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is printed by this C code? int a[] = {10, 20, 30, 40}; int *p = a; p += 2; printf("%d", *p);
सही उत्तर: घ) 30
p first points to a[0]; adding 2 moves it to a[2], whose value is 30.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is printed by this C code? int i; for (i = 0; i < 5; i++); printf("%d", i);
सही उत्तर: घ) 5
The semicolon after the for header makes the loop body empty; the loop just counts i up to 5, then printf runs once and prints 5.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 8-bit 2's complement number 10110110 represents which decimal value?
सही उत्तर: घ) -74
The MSB is 1, so the number is negative; 10110110 = 182 unsigned and 182 − 256 = −74.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Google Drive and Dropbox, which let users store files on remote servers over the internet, are examples of:
सही उत्तर: ग) cloud storage
Files are kept on the provider's servers and accessed from any device online.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An uncompressed 640 × 480 image uses 8 bits per pixel. Its size is:
सही उत्तर: ख) 300 KB
640 × 480 = 307,200 pixels × 1 byte = 307,200 bytes = 300 KB (307,200 ÷ 1024).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The default file extension of a presentation saved in PowerPoint 2007 or later is:
सही उत्तर: घ) .pptx
.pptx is the standard presentation format; .ppsx opens directly as a slide show.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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