Please keep at least one language enabled. || కనీసం ఒక భాషను ఎంచుకోండి.
Question 1
ప్రశ్న 1
In an office network, every computer has an individual Ethernet connection to one central switch. Which physical topology is being used?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A star topology connects each end device through an individual link to a central device.
• In modern Ethernet LANs, that central device is commonly a switch.
• Bus uses a shared backbone, ring forms a loop, and full mesh directly interconnects every pair of nodes.
• In modern Ethernet LANs, that central device is commonly a switch.
• Bus uses a shared backbone, ring forms a loop, and full mesh directly interconnects every pair of nodes.
వివరణ:
Question 2
ప్రశ్న 2
A city administration interconnects several office LANs located in different parts of the same metropolitan city. Which network type best describes the resulting citywide network?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• MAN stands for Metropolitan Area Network.
• A MAN normally covers an area larger than a LAN but smaller than a geographically extensive WAN.
• Interconnecting networks across a city is a typical MAN application.
• A MAN normally covers an area larger than a LAN but smaller than a geographically extensive WAN.
• Interconnecting networks across a city is a typical MAN application.
వివరణ:
Question 3
ప్రశ్న 3
Four servers must be connected so that every server has its own direct point-to-point connection to each of the other three servers. Which topology exactly satisfies this requirement?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• In a full mesh, every node is directly connected to every other node.
• With four servers, each server therefore has direct links to the other three servers.
• This provides greater path redundancy than a simple star, bus or ring arrangement.
• With four servers, each server therefore has direct links to the other three servers.
• This provides greater path redundancy than a simple star, bus or ring arrangement.
వివరణ:
Question 4
ప్రశ్న 4
Which statement best describes the function of a Network Interface Card (NIC)?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A NIC or network adapter provides a device with its network interface.
• It participates in transmitting and receiving data through a wired or wireless network connection.
• Geographical network classification and ISP service provision are separate concepts.
• It participates in transmitting and receiving data through a wired or wireless network connection.
• Geographical network classification and ISP service provision are separate concepts.
వివరణ:
Question 5
ప్రశ్న 5
Thirty computers, printers and a server are connected within one police-office building for local file and printer sharing. Which geographical network classification is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• LAN stands for Local Area Network and covers a limited geographical area.
• A single office building is a standard LAN environment.
• The number of devices does not by itself convert a localized network into a MAN or WAN.
• A single office building is a standard LAN environment.
• The number of devices does not by itself convert a localized network into a MAN or WAN.
వివరణ:
Question 6
ప్రశ్న 6
Which failure represents an important single-point-of-failure risk in a basic star network with no redundant central device?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A basic star topology depends on its central connecting device.
• Failure of the central switch can interrupt communication among devices connected through that switch.
• Failure of one individual endpoint or its peripheral equipment does not normally disable all other star-connected nodes.
• Failure of the central switch can interrupt communication among devices connected through that switch.
• Failure of one individual endpoint or its peripheral equipment does not normally disable all other star-connected nodes.
వివరణ:
Question 7
ప్రశ్న 7
A company has separate LANs in Hyderabad, Delhi, London and Singapore and interconnects them for access to common corporate systems. Which type of network provides the overall long-distance interconnection?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A WAN interconnects networks across large geographical areas.
• WANs are commonly used to connect company branches located in different cities, countries or continents.
• Each individual office can still operate its own LAN within the larger WAN arrangement.
• WANs are commonly used to connect company branches located in different cities, countries or continents.
• Each individual office can still operate its own LAN within the larger WAN arrangement.
వివరణ:
Question 8
ప్రశ్న 8
A communication device performs modulation for outgoing information and demodulation for incoming information on a suitable access link. Which device is described?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The term modem is derived from modulator-demodulator.
• Modulation prepares information for transmission through the relevant communication system, while demodulation recovers received information.
• A switch and NIC have different network-connectivity functions.
• Modulation prepares information for transmission through the relevant communication system, while demodulation recovers received information.
• A switch and NIC have different network-connectivity functions.
వివరణ:
Question 9
ప్రశ్న 9
In a star-wired Ethernet LAN, the cable connecting one desktop computer to the central switch is disconnected while all other links and the switch remain operational. What is the most likely immediate effect?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Each endpoint in a star topology has its own physical link to the central device.
• Failure of one endpoint link normally isolates that endpoint without breaking the other independent links.
• This fault isolation is one advantage of star topology compared with a shared-backbone bus.
• Failure of one endpoint link normally isolates that endpoint without breaking the other independent links.
• This fault isolation is one advantage of star topology compared with a shared-backbone bus.
వివరణ:
Question 10
ప్రశ్న 10
A full-mesh network contains 6 nodes, with one undirected point-to-point link between every distinct pair of nodes. How many links are required?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A full mesh requires one link for every distinct pair of nodes.
• The number of links is n(n−1)/2.
• For 6 nodes, 6×5/2 = 15 links.
• The number of links is n(n−1)/2.
• For 6 nodes, 6×5/2 = 15 links.
వివరణ:
Question 11
ప్రశ్న 11
A desktop PC and a network printer must communicate through a wired Ethernet switch on the same LAN. Which combination provides the most relevant basic interfaces and interconnection?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Each Ethernet end device needs an appropriate network interface for network communication.
• Ethernet cabling connects those interfaces to the LAN switch.
• A modem or WAN is not inherently required merely for two local Ethernet devices to communicate on the same LAN.
• Ethernet cabling connects those interfaces to the LAN switch.
• A modem or WAN is not inherently required merely for two local Ethernet devices to communicate on the same LAN.
వివరణ:
Question 12
ప్రశ్న 12
One organization uses star topology within each office, ring links for one industrial segment and mesh links between critical routers. What best describes the overall topology?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A hybrid topology combines characteristics of different network topology types.
• The stated network incorporates star, ring and mesh arrangements.
• It therefore cannot accurately be described as one pure topology throughout.
• The stated network incorporates star, ring and mesh arrangements.
• It therefore cannot accurately be described as one pure topology throughout.
వివరణ:
Question 13
ప్రశ్న 13
Which statement most accurately compares a modem and a router in a typical broadband network?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A modem or equivalent access device provides the provider-facing access connection appropriate to the service technology.
• A router forwards IP packets between networks, such as between a LAN and an external network.
• Consumer gateway equipment can combine these functions physically, but their networking roles remain conceptually distinct.
• A router forwards IP packets between networks, such as between a LAN and an external network.
• Consumer gateway equipment can combine these functions physically, but their networking roles remain conceptually distinct.
వివరణ:
Question 14
ప్రశ్న 14
Which characteristic creates a major reliability disadvantage in a traditional bus topology?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Traditional bus topology connects devices through a shared main cable or backbone.
• A serious failure in that shared path can affect communication for multiple nodes.
• The other descriptions correspond more closely to mesh, star or ring structures.
• A serious failure in that shared path can affect communication for multiple nodes.
• The other descriptions correspond more closely to mesh, star or ring structures.
వివరణ:
Question 15
ప్రశ్న 15
A laptop can successfully connect to a Wi-Fi LAN even though no Ethernet cable is attached to it. Which hardware provides the laptop's local wireless network interface?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A wireless network adapter functions as the laptop's network interface for Wi-Fi communication.
• It sends and receives network data using radio rather than through an Ethernet cable.
• A modem provides a different type of connectivity function and does not replace the laptop's Wi-Fi interface.
• It sends and receives network data using radio rather than through an Ethernet cable.
• A modem provides a different type of connectivity function and does not replace the laptop's Wi-Fi interface.
వివరణ:
Question 16
ప్రశ్న 16
A network has a central core switch connected to several departmental switches, and each departmental switch connects to many end devices. Which topology most closely describes this hierarchical branching arrangement?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Tree topology organizes network devices hierarchically into levels and branches.
• A core-to-department-to-end-device structure is a typical hierarchical arrangement.
• It differs from a simple star because multiple levels of branching are present.
• A core-to-department-to-end-device structure is a typical hierarchical arrangement.
• It differs from a simple star because multiple levels of branching are present.
వివరణ:
Question 17
ప్రశ్న 17
Which statement correctly explains the relationship between network type and network topology?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• LAN, MAN and WAN primarily distinguish networks by geographical coverage.
• Star, bus, ring, mesh and related terms describe network topology or the arrangement of links and nodes.
• These dimensions are independent; for example, a LAN is not restricted to only one possible topology.
• Star, bus, ring, mesh and related terms describe network topology or the arrangement of links and nodes.
• These dimensions are independent; for example, a LAN is not restricted to only one possible topology.
వివరణ:
Question 18
ప్రశ్న 18
Two computers communicate only with each other on a small isolated Ethernet LAN and have no requirement for Internet or service-provider connectivity. Which statement is correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Local network communication does not inherently require access to an Internet service provider.
• Appropriate NICs and a valid local network connection are sufficient for devices to communicate within the LAN.
• A modem becomes relevant when the communication design requires a corresponding provider-access service.
• Appropriate NICs and a valid local network connection are sufficient for devices to communicate within the LAN.
• A modem becomes relevant when the communication design requires a corresponding provider-access service.
వివరణ:
Question 19
ప్రశ్న 19
Which sequence correctly orders the three geographical network categories from generally smallest to largest coverage?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• LAN normally covers a relatively limited local area.
• MAN extends across a metropolitan area and lies between LAN and WAN in geographical scope.
• WAN covers the broadest area of the three and can interconnect networks across regions, countries or continents.
• MAN extends across a metropolitan area and lies between LAN and WAN in geographical scope.
• WAN covers the broadest area of the three and can interconnect networks across regions, countries or continents.
వివరణ:
Question 20
ప్రశ్న 20
Match List I with List II:
List I
(a) NIC
(b) Modem
(c) WAN
(d) Mesh topology
List II
1. Provides a host with a network interface
2. Interconnects geographically distant networks
3. Provides multiple inter-node links and, in full form, directly connects every pair of nodes
4. Performs modulation and demodulation on an appropriate communication link
Choose the correct matching code.
List I
(a) NIC
(b) Modem
(c) WAN
(d) Mesh topology
List II
1. Provides a host with a network interface
2. Interconnects geographically distant networks
3. Provides multiple inter-node links and, in full form, directly connects every pair of nodes
4. Performs modulation and demodulation on an appropriate communication link
Choose the correct matching code.
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• NIC provides the host network interface, giving (a)-1.
• Modem corresponds to modulation and demodulation, giving (b)-4, while WAN provides long-distance network interconnection, giving (c)-2.
• Mesh topology provides multiple inter-node links and full mesh directly connects every pair, giving (d)-3.
• Modem corresponds to modulation and demodulation, giving (b)-4, while WAN provides long-distance network interconnection, giving (c)-2.
• Mesh topology provides multiple inter-node links and full mesh directly connects every pair, giving (d)-3.
వివరణ:
Answer Key సమాధానాల పట్టిక
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Question 1 ప్రశ్న 1Answer: C. Star topology సమాధానం: C.
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Question 2 ప్రశ్న 2Answer: A. MAN సమాధానం: A.
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Question 3 ప్రశ్న 3Answer: D. Full mesh topology సమాధానం: D.
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Question 4 ప్రశ్న 4Answer: B. It provides a computer or device with an interface for sending and receiving data over a network. సమాధానం: B.
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Question 5 ప్రశ్న 5Answer: A. LAN సమాధానం: A.
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Question 6 ప్రశ్న 6Answer: D. Failure of the central switch సమాధానం: D.
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Question 7 ప్రశ్న 7Answer: B. WAN సమాధానం: B.
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Question 8 ప్రశ్న 8Answer: C. Modem సమాధానం: C.
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Question 9 ప్రశ్న 9Answer: B. The disconnected desktop loses that wired network connection, while the other switch-connected devices can continue communicating. సమాధానం: B.
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Question 10 ప్రశ్న 10Answer: C. 15 సమాధానం: C.
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Question 11 ప్రశ్న 11Answer: A. Network interfaces on the end devices, Ethernet cabling and an Ethernet switch సమాధానం: A.
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Question 12 ప్రశ్న 12Answer: D. Hybrid topology సమాధానం: D.
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Question 13 ప్రశ్న 13Answer: D. A modem or access device connects to the provider-facing service, while a router forwards traffic between networks and can share that external connectivity with a local network. సమాధానం: D.
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Question 14 ప్రశ్న 14Answer: B. The connected nodes depend on a shared backbone, so a major backbone failure can disrupt network communication. సమాధానం: B.
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Question 15 ప్రశ్న 15Answer: C. Wireless network adapter సమాధానం: C.
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Question 16 ప్రశ్న 16Answer: A. Tree topology సమాధానం: A.
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Question 17 ప్రశ్న 17Answer: B. LAN, MAN and WAN mainly classify geographical scope, while star, bus, ring and mesh describe how network nodes and links are arranged. సమాధానం: B.
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Question 18 ప్రశ్న 18Answer: D. A modem is not inherently required for their local LAN communication; appropriate network interfaces and local connectivity are sufficient. సమాధానం: D.
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Question 19 ప్రశ్న 19Answer: A. LAN → MAN → WAN సమాధానం: A.
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Question 20 ప్రశ్న 20Answer: C. (a)-1, (b)-4, (c)-2, (d)-3 సమాధానం: C.