Please keep at least one language enabled. || కనీసం ఒక భాషను ఎంచుకోండి.
Question 1
ప్రశ్న 1
Which motherboard component provides the physical and electrical interface into which a compatible desktop CPU is installed?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The CPU socket provides the physical mounting and electrical contacts required for a compatible processor.
• Socket type is an important motherboard–processor compatibility requirement.
• DIMM slots hold memory modules, while SATA and PCI Express connectors serve different device categories.
• Socket type is an important motherboard–processor compatibility requirement.
• DIMM slots hold memory modules, while SATA and PCI Express connectors serve different device categories.
వివరణ:
Question 2
ప్రశ్న 2
Why is processor cache placed between the CPU execution units and comparatively slower main memory?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Cache stores copies of selected instructions and data that the processor is likely to need again soon.
• Cache access is much faster than ordinary main-memory access.
• By exploiting temporal and spatial locality, cache can reduce the CPU's average effective memory-access time.
• Cache access is much faster than ordinary main-memory access.
• By exploiting temporal and spatial locality, cache can reduce the CPU's average effective memory-access time.
వివరణ:
Question 3
ప్రశ్న 3
A motherboard supports only DDR4 desktop memory. Which statement about installing a DDR5 DIMM is correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• DDR memory generations use different electrical specifications and module keying.
• A DDR5 DIMM is therefore not intended to fit or operate in a DDR4-only motherboard slot.
• Memory compatibility must be checked against the motherboard's supported DDR generation and specifications.
• A DDR5 DIMM is therefore not intended to fit or operate in a DDR4-only motherboard slot.
• Memory compatibility must be checked against the motherboard's supported DDR generation and specifications.
వివరణ:
Question 4
ప్రశ్న 4
Which statement most accurately describes an NVMe SSD installed in a typical modern M.2 PCIe storage slot?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• NVMe was designed for non-volatile storage devices connected through PCI Express.
• It supports substantial command parallelism and lower protocol overhead than the older SATA/AHCI path.
• NVMe SSDs are non-volatile storage devices and are not installed in DIMM memory slots.
• It supports substantial command parallelism and lower protocol overhead than the older SATA/AHCI path.
• NVMe SSDs are non-volatile storage devices and are not installed in DIMM memory slots.
వివరణ:
Question 5
ప్రశ్న 5
What is the primary role of a Network Interface Card (NIC) in a computer?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A NIC provides connectivity between a host and a network medium such as Ethernet or Wi-Fi.
• It handles network-interface functions including transmission and reception of link-layer frames.
• Storage, file encryption and motherboard power delivery are separate system functions.
• It handles network-interface functions including transmission and reception of link-layer frames.
• Storage, file encryption and motherboard power delivery are separate system functions.
వివరణ:
Question 6
ప్రశ్న 6
In a traditional dial-up connection, what is the fundamental function of a modem?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The term modem derives from modulator-demodulator.
• A traditional dial-up modem converts digital computer information into a form suitable for an analog telephone channel and performs the reverse conversion for received signals.
• Routing and database functions are not the basic purpose of a modem.
• A traditional dial-up modem converts digital computer information into a form suitable for an analog telephone channel and performs the reverse conversion for received signals.
• Routing and database functions are not the basic purpose of a modem.
వివరణ:
Question 7
ప్రశ్న 7
Which peripheral is most appropriate for converting a paper photograph into a digital image file that can be stored on a computer?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A scanner is an input device that captures information from paper and converts it into digital image data.
• Photographs and printed documents can therefore be digitized for storage or processing.
• Plotters, speakers and projectors are primarily output devices.
• Photographs and printed documents can therefore be digitized for storage or processing.
• Plotters, speakers and projectors are primarily output devices.
వివరణ:
Question 8
ప్రశ్న 8
An administrator needs to operate several rack-mounted computers using one keyboard, one monitor and one mouse. Which hardware device is specifically designed for this purpose?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• KVM stands for Keyboard, Video and Mouse.
• A KVM switch allows one set of these peripherals to be switched among multiple computers.
• It is commonly useful in server rooms where maintaining separate consoles for every computer would be inefficient.
• A KVM switch allows one set of these peripherals to be switched among multiple computers.
• It is commonly useful in server rooms where maintaining separate consoles for every computer would be inefficient.
వివరణ:
Question 9
ప్రశ్న 9
Twenty desktop computers and a local file server are connected by Ethernet within one office. Which device is primarily used to forward Ethernet frames among these devices based on learned MAC-address information?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• An Ethernet switch interconnects devices within a LAN.
• It learns source MAC addresses and uses its forwarding table when deciding where to send Ethernet frames.
• A modem provides a different type of communications function and is not the normal local frame-forwarding device.
• It learns source MAC addresses and uses its forwarding table when deciding where to send Ethernet frames.
• A modem provides a different type of communications function and is not the normal local frame-forwarding device.
వివరణ:
Question 10
ప్రశ్న 10
A government department interconnects several office LANs located at different sites throughout the same metropolitan city. Which network classification best fits this geographical scope?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• MAN stands for Metropolitan Area Network.
• It commonly spans a city or metropolitan region and can interconnect multiple LANs within that area.
• Its geographical scope is normally broader than a single LAN but narrower than a large regional or national WAN.
• It commonly spans a city or metropolitan region and can interconnect multiple LANs within that area.
• Its geographical scope is normally broader than a single LAN but narrower than a large regional or national WAN.
వివరణ:
Question 11
ప్రశ్న 11
An organization interconnects branch-office networks located in Hyderabad, Bengaluru, Delhi and Kolkata. Which network type best describes the overall interconnection?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A WAN connects systems or networks across large geographical distances.
• Interconnecting offices in widely separated cities is a typical WAN scenario.
• LAN and MAN classifications normally cover much smaller geographical areas.
• Interconnecting offices in widely separated cities is a typical WAN scenario.
• LAN and MAN classifications normally cover much smaller geographical areas.
వివరణ:
Question 12
ప్రశ్న 12
In a physical star topology, all workstations are connected to one central Ethernet switch. Which failure is most likely to disrupt communication for all of those workstations simultaneously?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• In a star topology, endpoint links converge on a central device such as a switch.
• Failure of one individual endpoint link normally affects only that endpoint.
• Failure of the central switch can interrupt communication for all devices dependent on that switch.
• Failure of one individual endpoint link normally affects only that endpoint.
• Failure of the central switch can interrupt communication for all devices dependent on that switch.
వివరణ:
Question 13
ప్రశ్న 13
Six network nodes are connected in a full mesh in which every node has a direct link to every other node. How many point-to-point links are required?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A full mesh with n nodes requires n(n-1)/2 unique undirected links.
• For 6 nodes, 6×5/2 = 15.
• Dividing by 2 avoids counting each connection twice.
• For 6 nodes, 6×5/2 = 15.
• Dividing by 2 avoids counting each connection twice.
వివరణ:
Question 14
ప్రశ్న 14
Which statement most accurately distinguishes a router from a modem in a typical home or small-office Internet connection?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A router forwards IP packets between different networks and selects appropriate next hops.
• A modem or service-access device interfaces the local equipment with a particular provider transmission technology.
• Consumer products may integrate modem and router functions in one unit, but the underlying functions are conceptually distinct.
• A modem or service-access device interfaces the local equipment with a particular provider transmission technology.
• Consumer products may integrate modem and router functions in one unit, but the underlying functions are conceptually distinct.
వివరణ:
Question 15
ప్రశ్న 15
Which description best matches an organizational intranet?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• An intranet provides internal organizational information, applications or services to a restricted user community.
• It can use ordinary Internet technologies such as TCP/IP, HTTP, HTTPS and web browsers.
• Controlled Internet connectivity does not automatically make protected intranet resources public.
• It can use ordinary Internet technologies such as TCP/IP, HTTP, HTTPS and web browsers.
• Controlled Internet connectivity does not automatically make protected intranet resources public.
వివరణ:
Question 16
ప్రశ్న 16
A firewall uses a default-deny inbound policy. A packet does not match any rule that explicitly permits it. What should happen to the packet?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Default deny means traffic is rejected unless an applicable policy explicitly permits it.
• This limits exposed services to those that the administrator has intentionally authorized.
• It is therefore the opposite of a default-allow model.
• This limits exposed services to those that the administrator has intentionally authorized.
• It is therefore the opposite of a default-allow model.
వివరణ:
Question 17
ప్రశ్న 17
A firewall allows an outbound TCP connection and later recognizes incoming packets as legitimate return traffic because they belong to the recorded established connection. Which capability is being used?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Stateful inspection maintains information describing active network connections.
• Later packets can be evaluated in the context of the recorded communication state.
• Basic stateless packet filtering does not maintain equivalent per-connection state.
• Later packets can be evaluated in the context of the recorded communication state.
• Basic stateless packet filtering does not maintain equivalent per-connection state.
వివరణ:
Question 18
ప్రశ్న 18
Which identifier is normally associated with the network interface at the Ethernet link layer and is commonly represented as a 48-bit MAC address?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Ethernet interfaces commonly use 48-bit MAC addresses as link-layer identifiers.
• Switches use MAC-address information when forwarding Ethernet frames within a LAN.
• IP addresses and transport-layer ports operate at different networking layers.
• Switches use MAC-address information when forwarding Ethernet frames within a LAN.
• IP addresses and transport-layer ports operate at different networking layers.
వివరణ:
Question 19
ప్రశ్న 19
A workstation is configured to obtain its IPv4 configuration automatically. Which network service normally supplies an address, subnet mask and related configuration such as a default gateway?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• DHCP stands for Dynamic Host Configuration Protocol.
• It can automatically provide clients with IPv4 addressing information including an address, subnet mask, default gateway and other options.
• HTTP, FTP and SMTP are application protocols serving different purposes.
• It can automatically provide clients with IPv4 addressing information including an address, subnet mask, default gateway and other options.
• HTTP, FTP and SMTP are application protocols serving different purposes.
వివరణ:
Question 20
ప్రశ్న 20
A desktop connected by Ethernet shows no link indicator on either the NIC or switch port, while other computers on the same switch work normally. What should be checked first?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Absence of an Ethernet link indication points first toward the physical connection or interface.
• The cable should be reseated or tested, and a known-good switch port or NIC connection can be tried.
• Application settings such as browser pages or Office themes cannot establish the physical Ethernet link.
• The cable should be reseated or tested, and a known-good switch port or NIC connection can be tried.
• Application settings such as browser pages or Office themes cannot establish the physical Ethernet link.
వివరణ:
Question 21
ప్రశ్న 21
Consider the following statements:
1. The CPU executes instructions and performs arithmetic/logical operations.
2. RAM provides volatile working storage for active programs and data.
3. An SSD is normally non-volatile secondary storage.
4. A NIC provides a computer's interface to a network.
Which statements are correct?
1. The CPU executes instructions and performs arithmetic/logical operations.
2. RAM provides volatile working storage for active programs and data.
3. An SSD is normally non-volatile secondary storage.
4. A NIC provides a computer's interface to a network.
Which statements are correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The CPU, RAM, SSD and NIC each perform the functions stated in the question.
• RAM is volatile primary working memory, whereas an SSD provides persistent secondary storage.
• The NIC supplies network connectivity, so all four statements are correct.
• RAM is volatile primary working memory, whereas an SSD provides persistent secondary storage.
• The NIC supplies network connectivity, so all four statements are correct.
వివరణ:
Question 22
ప్రశ్న 22
Match List I with List II:
List I
(a) RAM
(b) SSD
(c) NIC
(d) Modem
List II
1. Non-volatile secondary storage
2. Volatile working memory
3. Network-interface hardware for sending and receiving network data
4. Device that performs modulation/demodulation or equivalent access-link signaling functions for an applicable communications service
Choose the correct matching code.
List I
(a) RAM
(b) SSD
(c) NIC
(d) Modem
List II
1. Non-volatile secondary storage
2. Volatile working memory
3. Network-interface hardware for sending and receiving network data
4. Device that performs modulation/demodulation or equivalent access-link signaling functions for an applicable communications service
Choose the correct matching code.
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• RAM is volatile working memory, giving (a)-2, while an SSD provides non-volatile secondary storage, giving (b)-1.
• A NIC supplies the host's network interface, giving (c)-3.
• A modem provides the communications-service interface involving modulation/demodulation or equivalent access signaling, giving (d)-4.
• A NIC supplies the host's network interface, giving (c)-3.
• A modem provides the communications-service interface involving modulation/demodulation or equivalent access signaling, giving (d)-4.
వివరణ:
Question 23
ప్రశ్న 23
Assertion (A): Computers connected to the same functioning LAN can exchange local data even if the organization's Internet connection is unavailable.
Reason (R): Local LAN communication between appropriately configured hosts does not inherently require traffic to pass through an Internet service provider.
Choose the correct answer.
Reason (R): Local LAN communication between appropriately configured hosts does not inherently require traffic to pass through an Internet service provider.
Choose the correct answer.
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Local hosts can communicate through LAN switches and local IP connectivity without using the public Internet.
• Internet access is required only when the communication needs to reach resources outside the local organization or otherwise use Internet connectivity.
• Both statements are true, and the Reason correctly explains the Assertion.
• Internet access is required only when the communication needs to reach resources outside the local organization or otherwise use Internet connectivity.
• Both statements are true, and the Reason correctly explains the Assertion.
వివరణ:
Question 24
ప్రశ్న 24
A workstation can open an Internet web server when its numerical IP address is entered but fails when the corresponding domain name is used. Which service should be investigated first?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Successful access by numerical IP address indicates that basic IP connectivity to the server exists.
• Failure specifically when a hostname is used strongly points toward DNS or other name-resolution configuration.
• DNS translates or resolves human-readable domain names to information such as IP addresses.
• Failure specifically when a hostname is used strongly points toward DNS or other name-resolution configuration.
• DNS translates or resolves human-readable domain names to information such as IP addresses.
వివరణ:
Question 25
ప్రశ్న 25
A police office has an internal evidence server, employee workstations and Internet access. The requirement is to keep the evidence application available only to authorized internal users while controlling Internet traffic at the network boundary. Which design best satisfies the requirement?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The evidence application belongs in a restricted organizational environment rather than being exposed unnecessarily to the public Internet.
• Authentication and authorization determine who may use the protected application and what access they receive.
• Firewall rules at the network boundary provide complementary control over permitted Internet and intranet traffic.
• Authentication and authorization determine who may use the protected application and what access they receive.
• Firewall rules at the network boundary provide complementary control over permitted Internet and intranet traffic.
వివరణ:
Answer Key సమాధానాల పట్టిక
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Question 1 ప్రశ్న 1Answer: C. CPU socket సమాధానం: C.
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Question 2 ప్రశ్న 2Answer: A. To reduce average memory-access time by keeping frequently or recently needed instructions and data close to the CPU సమాధానం: A.
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Question 3 ప్రశ్న 3Answer: D. DDR5 is not physically and electrically interchangeable with a DDR4 DIMM slot. సమాధానం: D.
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Question 4 ప్రశ్న 4Answer: B. It uses PCI Express connectivity with the NVMe protocol rather than the traditional SATA/AHCI storage path. సమాధానం: B.
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Question 5 ప్రశ్న 5Answer: C. To provide the hardware interface through which the computer sends and receives network data సమాధానం: C.
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Question 6 ప్రశ్న 6Answer: B. To modulate digital information for transmission over an analog communication channel and demodulate received signals సమాధానం: B.
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Question 7 ప్రశ్న 7Answer: A. Scanner సమాధానం: A.
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Question 8 ప్రశ్న 8Answer: D. KVM switch సమాధానం: D.
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Question 9 ప్రశ్న 9Answer: C. Ethernet switch సమాధానం: C.
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Question 10 ప్రశ్న 10Answer: A. MAN సమాధానం: A.
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Question 11 ప్రశ్న 11Answer: B. WAN సమాధానం: B.
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Question 12 ప్రశ్న 12Answer: D. Failure of the central switch సమాధానం: D.
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Question 13 ప్రశ్న 13Answer: C. 15 సమాధానం: C.
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Question 14 ప్రశ్న 14Answer: B. A router forwards traffic between IP networks, while a modem or access device provides the signaling/interface needed for the service-provider access link. సమాధానం: B.
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Question 15 ప్రశ్న 15Answer: A. A private organizational network or information environment intended primarily for authorized users సమాధానం: A.
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Question 16 ప్రశ్న 16Answer: D. It should be blocked because the traffic has not been explicitly authorized. సమాధానం: D.
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Question 17 ప్రశ్న 17Answer: C. Stateful inspection సమాధానం: C.
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Question 18 ప్రశ్న 18Answer: A. MAC address సమాధానం: A.
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Question 19 ప్రశ్న 19Answer: B. DHCP సమాధానం: B.
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Question 20 ప్రశ్న 20Answer: D. The Ethernet cable, NIC connection and switch port సమాధానం: D.
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Question 21 ప్రశ్న 21Answer: C. 1, 2, 3 and 4 సమాధానం: C.
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Question 22 ప్రశ్న 22Answer: A. (a)-2, (b)-1, (c)-3, (d)-4 సమాధానం: A.
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Question 23 ప్రశ్న 23Answer: B. Both Assertion and Reason are true, and Reason is the correct explanation of Assertion. సమాధానం: B.
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Question 24 ప్రశ్న 24Answer: D. DNS name resolution సమాధానం: D.
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Question 25 ప్రశ్న 25Answer: C. Keep the evidence application on the controlled intranet, authenticate and authorize users, and enforce appropriate firewall rules at the network boundary. సమాధానం: C.