त्रिवि IT प्रवेश BIT र BCA प्रवेश तयारी
त्रिवि IT प्रवेश – BIT र BCA प्रवेश
TU BIT & BCA Entrance · TU IT Entrance (B.Sc. CSIT, BIT, BCA)
२,६०७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
IT प्रवेश: 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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A firewall is used to:
सही उत्तर: ख) Monitor and filter network traffic according to security rules
A firewall, in hardware or software, allows or blocks traffic based on rules to protect a network from unauthorised access. It does not remove viruses already on a system, which is the job of antivirus software.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A malicious program that appears useful but performs harmful actions is called a:
सही उत्तर: घ) Trojan horse
A Trojan horse disguises itself as legitimate software to trick users into installing it. A worm, unlike a Trojan, replicates itself across networks without user action.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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HTML stands for:
सही उत्तर: क) HyperText Markup Language
HTML is the markup language used to structure web pages using tags. It is a markup language, not a programming language.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The World Wide Web was invented by:
सही उत्तर: ख) Tim Berners-Lee
Tim Berners-Lee proposed the WWW at CERN in 1989 and developed HTTP and HTML. Vint Cerf is called a father of the Internet for co-designing TCP/IP.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The function of a modem is to:
सही उत्तर: घ) Convert digital signals to analog and analog back to digital
Modem stands for modulator-demodulator: it modulates digital data onto an analog carrier and demodulates it back. Connecting networks by IP address is the job of a router.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Optical fibre cable transmits data in the form of:
सही उत्तर: क) Light pulses
Optical fibre carries data as light using total internal reflection, giving high bandwidth and immunity to electromagnetic interference. Twisted pair and coaxial cables carry electrical signals.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A walkie-talkie is an example of which mode of data transmission?
सही उत्तर: ख) Half duplex
In half duplex both sides can transmit, but only one at a time, as with a walkie-talkie. A telephone call is full duplex, and TV broadcasting is simplex.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The IP address 192.168.10.5 belongs to which class?
सही उत्तर: घ) Class C
Class C addresses have a first octet from 192 to 223. Class B covers 128 to 191, and Class D (224 to 239) is used for multicast.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The IP address 127.0.0.1 is used for:
सही उत्तर: ग) Loopback testing of the local machine
127.0.0.1 is the loopback address, also called localhost, used to test the network stack of one's own computer. It never leaves the host.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which transport-layer protocol is connection-oriented and provides reliable delivery?
सही उत्तर: घ) TCP
TCP sets up a connection with a three-way handshake and guarantees ordered, reliable delivery. UDP is connectionless and faster but does not guarantee delivery.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
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