कम्प्युटर ज्ञान – Computer Knowledge MCQ
कम्प्युटर ज्ञान – IT प्रवेश
Computer Knowledge · IT Entrance – B.Sc. CSIT, BIT & BCA · ३९७ प्रश्न
३९७ 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 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)
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The default port number for HTTP is:
सही उत्तर: ख) 80
HTTP uses port 80 by default and HTTPS uses port 443. Port 21 is for FTP control and 25 for SMTP.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which protocol automatically assigns IP addresses to devices on a network?
सही उत्तर: घ) DHCP
DHCP (Dynamic Host Configuration Protocol) leases IP addresses and settings to hosts. ARP maps an IP address to a MAC address.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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DNS is used to:
सही उत्तर: घ) Translate domain names into IP addresses
The Domain Name System converts names like example.com into numeric IP addresses. Automatic assignment of IP addresses is done by DHCP.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which protocol is used to send email?
सही उत्तर: घ) SMTP
SMTP (Simple Mail Transfer Protocol) sends and relays email. POP3 and IMAP are used to retrieve email from a mail server.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In which network topology are all nodes connected to a central hub or switch?
सही उत्तर: घ) Star
In a star topology every device has its own link to a central device; if the hub fails, the whole network fails. In a bus topology all nodes share a single backbone cable.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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At which OSI layer does a router mainly operate?
सही उत्तर: ग) Network layer
Routers forward packets between networks using IP addresses, which is a network-layer function. Switches mainly work at the data link layer using MAC addresses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A MAC (physical) address is how many bits long?
सही उत्तर: घ) 48
A MAC address has 48 bits, usually written as six pairs of hexadecimal digits. It is assigned to the network interface card.
💬 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।
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