9th Computer Science Chapter5 Computer Networks

Sr #	Questions	A	B	C	D
1	Which type of modem allows digital data to be transmitted over analog telephone lines?	DSL modem	Cable modem	Dial-up modem	Fiber modem
2	What is a typical advantage of client/server networks over peer-to-peer networks?	Lower initial setup cost	Higher scalability and centralized management	Faster data transmission speed	Increased privacy and security
3	Which topology is best suited for large networks with high fault tolerance requirements?	Bus topology	Ring topology	Star topology	Mesh topology
4	Which network type typically spans a city or a large campus area?	LAN (Local Area Network)	WAN (Wide Area Network)	MAN (Metropolitan Area Network)	PAN (Personal Area Network)
5	Which of the following is NOT a common use of computer networks?	File sharing	Email communication	Teleportation	Remote access to resources
6	Which transmission mode requires the receiver to acknowledge each data packet?	Simplex	Half-duplex	Full-duplex	Duplex
7	What is the primary function of a modem in data communication over telephone lines?	To convert digital signals into analog signals for transmission	To amplify signals for long-distance transmission	To encrypt data for secure transmission	To organize data into packets for efficient transmission
8	Which type of network covers a small geographical area such as a single building or campus?	LAN (Local Area Network)	WAN (Wide Area Network)	MAN (Metropolitan Area Network)	PAN (Personal Area Network)
9	What is a characteristic of a mesh network topology?	Centralized control of network resources	Redundant paths for data transmission	Each device connects to a central hub	Devices are arranged in a circular configuration
10	Which network topology uses a single, continuous cable with each device connecting directly to it?	Bus	Ring	Star	Mesh
11	In a star topology, how are devices connected?	In a circular configuration with each device connected to two others	Through a central hub with each device connected directly to it	In a linear sequence with each device connected to the next	Through a mesh of interconnected cables with no central point
12	What advantage does a fiber-optic communication line have over a twisted-pair copper cable?	Fiber-optic cables are more prone to interference.	Fiber-optic cables can transmit data over longer distances without signal degradation.	Fiber-optic cables are less expensive to install.	Fiber-optic cables are less secure.
13	In a client/server network architecture, which component typically manages network resources and provides services to clients?	Client computers	Server computers	Switches	Routers
14	Which network topology is most commonly used in Ethernet LANs?	Bus topology	Ring topology	Star topology	Mesh topology
15	Which type of communication line is typically used for high-speed internet access in residential areas?	Coaxial cable	Fiber-optic cable	Twisted-pair cable	DSL line
16	What is the primary purpose of a computer network?	Data storage	Communication and resource sharing	Software development	Gaming
17	Which network type is designed for personal devices within a short range, such as Bluetooth-connected devices?	LAN (Local Area Network)	WAN (Wide Area Network)	MAN (Metropolitan Area Network)	PAN (Personal Area Network)
18	What type of network connects multiple LANs in different geographical locations?	LAN (Local Area Network)	WAN (Wide Area Network)	MAN (Metropolitan Area Network)	PAN (Personal Area Network)
19	In a ring network topology, how are devices connected to each other?	In a circular configuration with each device connected to two others	Through a central hub with each device connected directly to it	In a star configuration with each device connected to a central switch	Through a series of interconnected cables with no specific order
20	In a star network topology, what is the central connecting point for all devices?	Switch	Router	Hub	Server
21	What is a characteristic of peer-to-peer networks?	They rely on a centralized server for resource management.	Each node can function as both a client and a server.	They are primarily used in large-scale enterprises.	They have high security vulnerabilities.
22	How does a DSL modem differ from a dial-up modem?	Dial-up modems use digital signals, while DSL modems use analog signals.	DSL modems provide faster data transmission speeds than dial-up modems.	Dial-up modems require a dedicated phone line, while DSL modems do not.	DSL modems are only used for voice communication, while dial-up modems are used for data communication.
23	Which topology provides redundancy and fault tolerance due to multiple paths between devices?	Bus topology	Ring topology	Star topology	Mesh topology
24	Which of the following is a commonly used communication technology for voice transmission over telephone networks?	Modem	Ethernet	VoIP	Router
25	What happens if a single device fails in a bus topology?	The entire network goes down.	Only the devices on one side of the failed device are affected.	Only the device itself is affected.	The network automatically reconfigures itself to bypass the failed device.
26	What is the characteristic feature of a ring topology?	Centralized control of network resources	Redundant paths for data transmission	Each device connects to a central hub	Devices are arranged in a circular configuration
27	Which comparison accurately describes the difference between broadband and baseband communication?	Broadband communication uses a single frequency for transmission, while baseband communication uses multiple frequencies.	Broadband communication allows multiple signals to be transmitted simultaneously, while baseband communication only allows one signal at a time.	Broadband communication is faster than baseband communication.	Broadband communication is less secure than baseband communication.
28	Point-to-point networks are characterized by:	Centralized control of network resources	Each node being directly connected to every other node	Nodes communicating through a central server	Nodes communicating through a series of switches and routers
29	In which network topology does each device connect to a single, continuous cable?	Bus topology	Ring topology	Star topology	Mesh topology