CBSE Class 12
Computer Science
10 Computer Networks
40
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Q-1
A company connects computers within a single building. Which type of network is this?
Easy
Types of Networks
A
LAN
B
MAN
C
WAN
D
PAN
Answer: LAN
Explanation: LAN covers a small geographic area like a building.
Q-2
Which device forwards data packets between different networks based on IP address?
Easy
Network Devices
A
Switch
B
Router
C
Hub
D
Repeater
Answer: Router
Explanation: Router directs packets using IP addressing.
Q-3
Which topology connects all nodes to a central device?
Easy
Networking Topologies
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Star
Explanation: Star topology uses a central hub/switch.
Q-4
Which protocol is used to translate domain names into IP addresses?
Easy
Domain Name System
A
HTTP
B
FTP
C
SMTP
D
DNS
Answer: DNS
Explanation: DNS resolves domain names to IP addresses.
Q-5
Which network covers a large geographic area like countries?
Easy
Types of Networks
A
WAN
B
LAN
C
PAN
D
MAN
Answer: WAN
Explanation: WAN spans large geographical areas.
Q-6
Which device connects multiple devices within a LAN and uses MAC addresses?
Medium
Network Devices
A
Router
B
Switch
C
Hub
D
Gateway
Answer: Switch
Explanation: Switch forwards frames using MAC addresses.
Q-7
Which topology has a single backbone cable?
Medium
Networking Topologies
A
Star
B
Ring
C
Bus
D
Mesh
Answer: Bus
Explanation: Bus topology uses a single backbone cable.
Q-8
Which device amplifies signals to extend network range?
Easy
Network Devices
A
Switch
B
Router
C
Bridge
D
Repeater
Answer: Repeater
Explanation: Repeater regenerates signals.
Q-9
Which type of network is used for personal devices like Bluetooth?
Easy
Types of Networks
A
PAN
B
LAN
C
WAN
D
MAN
Answer: PAN
Explanation: PAN connects personal devices.
Q-10
Which topology provides highest redundancy?
Medium
Networking Topologies
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Mesh
Explanation: Mesh provides multiple paths.
Q-11
Which identifier uniquely identifies a device in a network?
Easy
Identifying Nodes
A
IP Address
B
URL
C
Protocol
D
Port
Answer: IP Address
Explanation: IP address uniquely identifies devices.
Q-12
Which layer device operates using IP address?
Medium
Network Devices
A
Switch
B
Router
C
Hub
D
Repeater
Answer: Router
Explanation: Router works at network layer.
Q-13
Which network connects cities?
Easy
Types of Networks
A
LAN
B
PAN
C
MAN
D
WAN
Answer: MAN
Explanation: MAN connects metropolitan areas.
Q-14
Which topology failure affects entire network if backbone fails?
Medium
Networking Topologies
A
Star
B
Mesh
C
Ring
D
Bus
Answer: Bus
Explanation: Bus depends on backbone cable.
Q-15
Which protocol is used for web browsing?
Easy
Internet
A
HTTP
B
FTP
C
SMTP
D
DNS
Answer: HTTP
Explanation: HTTP is used for web pages.
Q-16
Which device connects two networks with different protocols?
Medium
Network Devices
A
Switch
B
Gateway
C
Hub
D
Repeater
Answer: Gateway
Explanation: Gateway connects different protocols.
Q-17
Which topology forms a closed loop?
Easy
Networking Topologies
A
Bus
B
Star
C
Ring
D
Mesh
Answer: Ring
Explanation: Ring forms circular loop.
Q-18
Which system maps domain names to IP addresses?
Easy
DNS
A
HTTP
B
FTP
C
SMTP
D
DNS
Answer: DNS
Explanation: DNS resolves names.
Q-19
Which network type is fastest within a building?
Easy
Types of Networks
A
LAN
B
WAN
C
MAN
D
PAN
Answer: LAN
Explanation: LAN offers high speed locally.
Q-20
Which device broadcasts data to all ports?
Medium
Network Devices
A
Switch
B
Hub
C
Router
D
Bridge
Answer: Hub
Explanation: Hub broadcasts data.
Q-21
Which topology is most reliable?
Medium
Topology
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Mesh
Explanation: Mesh offers multiple paths.
Q-22
Which technology connects smart devices like IoT?
Easy
IoT
A
Internet of Things
B
LAN
C
WAN
D
MAN
Answer: Internet of Things
Explanation: IoT connects smart devices.
Q-23
Which protocol is used for file transfer?
Easy
Internet
A
HTTP
B
FTP
C
SMTP
D
DNS
Answer: FTP
Explanation: FTP transfers files.
Q-24
Which protocol is used to send emails?
Easy
Internet
A
HTTP
B
FTP
C
POP3
D
SMTP
Answer: SMTP
Explanation: SMTP sends emails.
Q-25
Which topology uses central control?
Easy
Topology
A
Star
B
Bus
C
Ring
D
Mesh
Answer: Star
Explanation: Star uses central node.
Q-26
Which identifier is human-readable?
Easy
DNS
A
IP Address
B
Domain Name
C
MAC Address
D
Port
Answer: Domain Name
Explanation: Domain names are readable.
Q-27
Which topology has no central node?
Medium
Topology
A
Star
B
Bus
C
Ring
D
Mesh
Answer: Ring
Explanation: Ring has no central node.
Q-28
Which device filters traffic based on MAC?
Medium
Devices
A
Router
B
Hub
C
Repeater
D
Switch
Answer: Switch
Explanation: Switch filters using MAC.
Q-29
Which protocol retrieves emails?
Easy
Internet
A
POP3
B
SMTP
C
FTP
D
HTTP
Answer: POP3
Explanation: POP3 retrieves emails.
Q-30
Which device connects similar networks?
Medium
Devices
A
Switch
B
Bridge
C
Gateway
D
Router
Answer: Bridge
Explanation: Bridge connects similar networks.
Q-31
Which network type uses least area?
Easy
Types
A
PAN
B
LAN
C
MAN
D
WAN
Answer: PAN
Explanation: PAN is smallest.
Q-32
Which device routes data between networks?
Easy
Devices
A
Switch
B
Router
C
Hub
D
Bridge
Answer: Router
Explanation: Router routes data.
Q-33
Which topology is easiest to install?
Easy
Topology
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Star
Explanation: Star is easy to install.
Q-34
Which topology is costly?
Medium
Topology
A
Bus
B
Star
C
Ring
D
Mesh
Answer: Mesh
Explanation: Mesh requires many connections.
Q-35
Which service translates URL to IP?
Easy
DNS
A
DNS
B
HTTP
C
FTP
D
SMTP
Answer: DNS
Explanation: DNS resolves URLs.
Q-36
Which protocol transfers web pages?
Easy
Internet
A
FTP
B
HTTP
C
SMTP
D
DNS
Answer: HTTP
Explanation: HTTP transfers web pages.
Q-37
Which device connects two LANs?
Medium
Devices
A
Router
B
Hub
C
Bridge
D
Repeater
Answer: Bridge
Explanation: Bridge connects LANs.
Q-38
Which system manages domain hierarchy?
Medium
DNS
A
HTTP
B
FTP
C
SMTP
D
DNS
Answer: DNS
Explanation: DNS manages domain hierarchy.
Q-39
Which network is global?
Easy
Internet
A
Internet
B
LAN
C
PAN
D
MAN
Answer: Internet
Explanation: Internet is global network.
Q-40
Which network evolved from ARPANET?
Medium
Evolution
A
LAN
B
Internet
C
MAN
D
PAN
Answer: Internet
Explanation: Internet evolved from ARPANET.
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