Computer Networks
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Q141.What are the major advantages of using a high-level language rather than internal machine code or assembler language?
Correct Answer: C
High-level languages have simple, English-like syntax that is easier to read, write, and maintain, facilitating much easier and faster software development.
Q142.Which device connects two or more networks that use different, incompatible protocols?
Correct Answer: A
A Gateway acts as an entrance and translator between different networks utilizing different architectures or communication protocols.
Q143.Network bandwidth is usually measured in _____?
Correct Answer: B
Bandwidth represents the data transmission speed of a network, measured in bits per second (bps) or its multiples (Mbps, Gbps).
Q144.In a network with 25 computers, which topology would require the most extensive cabling?
Correct Answer: B
A full Mesh Topology requires n(n-1)/2 connections. For 25 computers, it requires 25*24/2 = 300 cables, making it highly cable-intensive.
Q145.Which of the following is considered an example of a Wide Area Network (WAN)?
Correct Answer: B
Mobile broadband networks (like 3G, 4G, 5G) span across countries or continents, representing common examples of WANs.
Q146.ICMP belongs to which layer of the OSI model?
Correct Answer: B
ICMP (Internet Control Message Protocol) is a Network Layer protocol used for diagnostics (like ping) and error reporting.
Q147.Which of the following is NOT a layer in the 7-layer OSI model?
Correct Answer: C
The 7 layers are Physical, Data Link, Network, Transport, Session, Presentation, and Application. 'Process' is not an OSI layer.
Q148.MTU in computer networking stands for?
Correct Answer: B
MTU stands for Maximum Transmission Unit, representing the largest physical packet size (in bytes) that can be sent over a network medium.
Q149.What is the primary function of a Gateway in computer networks?
Correct Answer: C
A Gateway acts as a protocol converter or translator connecting two different networks that utilize different protocols.
Q150.Which layer of the OSI model is responsible for addressing and routing packets across the network?
Correct Answer: B
The Network Layer (Layer 3) is responsible for logical packet addressing (like IP) and routing data packets between different networks.
Q151.In the star topology of a network, the central point device is a _____?
Correct Answer: C
In a star network topology, all endpoints connect to a central device such as a Hub or Switch which relays network traffic.
Q152.A malicious program that replicates and spreads independently over networks without user actions to harm computers is called ______?
Correct Answer: B
A Worm is self-replicating malware that spreads automatically over network infrastructure without requiring a host file or user intervention.
Q153.Computer language translators that translate line by line a high-level language to a low-level language are called ____?
Correct Answer: C
An interpreter translates and executes high-level source code instructions line by line, providing immediate feedback for debugging.
Q154.A network device that connects two or more networks is known as ______?
Correct Answer: A
A router is a network device that forwards data packets between separate computer networks, operating at Layer 3 (Network Layer) of the OSI model.
Q155.The first step in planning an extension program is _____?
Correct Answer: A
Situation analysis is the foundational first step of planning, involving gathering and evaluating community data to identify needs and constraints.
Q156.Blank DVDs on which data can be erased and rewritten are identified as _____?
Correct Answer: A
DVD+RW represents a rewritable DVD format where laser heating is used to reset and rewrite data up to 1,000 times.
Q157.Which class of IP address provides the most host addresses per network?
Correct Answer: B
Class A IP addresses utilize an 8-bit network prefix and a 24-bit host field, providing up to 16,777,214 host addresses per network.
Q158.Which protocol is commonly used for secure remote access to a network device?
Correct Answer: B
SSH (Secure Shell) provides robustly encrypted terminal connections for secure remote administration of servers and network devices.
Q159.Which of the following is NOT a function of the Network Layer?
Correct Answer: C
The Network Layer (Layer 3) handles routing, logical addressing, and packet forwarding; error detection is primarily managed at the Data Link Layer (Layer 2).
Q160.Which layer in the OSI model is responsible for end-to-end communication and error recovery?
Correct Answer: C
The Transport Layer (Layer 4) is responsible for logical, end-to-end communication, flow control, segment reassembly, and error recovery.