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web.groovymark@gmail.com
- November 24, 2024
Question 01
Which command is used to view the routing table of a network device?
a) ifconfig
b) arp
c) route
d) traceroute
Correct Answer: c) route
Explanation: The route command displays the routing table of a network device, showing how packets will be forwarded.
Question 02
What type of address is used at the Data Link layer of the OSI model?
a) IP address
b) MAC address
c) Domain name
d) Port number
Correct Answer: b) MAC address
Explanation: MAC addresses are used at the Data Link layer to uniquely identify devices on a network.
Question 03
What is the function of a switch in a network?
a) Connect different IP networks
b) Resolve domain names
c) Forward data to the correct MAC address
d) Act as a repeater
Correct Answer: c) Forward data to the correct MAC address
Explanation: A switch operates at the Data Link layer and forwards data based on MAC addresses.
Question 04
Which protocol is responsible for resolving IP addresses to MAC addresses?
a) DNS
b) ARP
c) HTTP
d) TCP
Correct Answer: b) ARP
Explanation: ARP (Address Resolution Protocol) is used to map IP addresses to MAC addresses in a local network.
Question 05
In which topology are all devices connected to a central hub or switch?
a) Bus
b) Star
c) Ring
d) Mesh
Correct Answer: b) Star
Explanation: In a star topology, all devices are connected to a central hub or switch, allowing data to flow through a central point.
Question 06
What is the purpose of a firewall in a network?
a) To connect different networks
b) To block unauthorized access
c) To speed up data transmission
d) To resolve IP addresses
Correct Answer: b) To block unauthorized access
Explanation: Firewalls are security devices that filter incoming and outgoing network traffic based on predefined security rules.
Question 07
What is the primary purpose of DNS in networking?
a) To assign IP addresses to devices
b) To translate domain names into IP addresses
c) To store MAC addresses
d) To provide file-sharing services
o translate domain names into IP addresses
Explanation: DNS (Domain Name System) is responsible for resolving human-readable domain names into machine-readable IP addresses.
Question 08
Which type of network device operates at Layer 3 of the OSI model?
a) Switch
b) Hub
c) Router
d) Repeater
Correct Answer: c) Router
Explanation: A router operates at Layer 3 (Network layer) of the OSI model, routing data between different networks using IP addresses.
Question 09
What is the function of NAT (Network Address Translation)?
a) To translate domain names to IP addresses
b) To allow multiple devices to share a single public IP address
c) To connect devices in a mesh network
d) To encrypt data transmissions
Correct Answer: b) To allow multiple devices to share a single public IP address
Explanation: NAT allows multiple devices on a private network to share a single public IP address for accessing the internet.
Question 10
Which type of network topology is typically used in modern LANs?
a) Bus
b) Star
c) Ring
d) Mesh
Correct Answer: b) Star
Explanation: The star topology is the most common topology used in modern LANs, where each device connects to a central hub or switch.
Question 11
Which encryption protocol is considered the most secure for wireless networks?
a) WEP
b) WPA
c) WPA2
d) SSL
Correct Answer: c) WPA2
Explanation: WPA2 (Wi-Fi Protected Access 2) is considered the most secure protocol for protecting wireless networks.
Question 12
Which protocol is used to transfer files between computers on a network?
a) FTP
b) SMTP
c) DHCP
d) ICMP
Correct Answer: a) FTP
Explanation: FTP (File Transfer Protocol) is used to transfer files between computers over a network.
Question 13
What is the role of a DHCP server in a network?
a) Assign IP addresses to devices automatically
b) Resolve domain names
c) Manage MAC addresses
d) Filter network traffic
Correct Answer: a) Assign IP addresses to devices automatically
Explanation: DHCP (Dynamic Host Configuration Protocol) servers automatically assign IP addresses to devices on a network.
Question 14
What is the purpose of port numbers in networking?
a) To identify MAC addresses
b) To route data to specific applications or services
c) To assign IP addresses
d) To encrypt network traffic
Correct Answer: b) To route data to specific applications or services
Explanation: Port numbers are used to direct data to the correct application or service on a device.
Question 15
Which OSI layer is responsible for ensuring error-free delivery of data?
a) Physical
b) Data Link
c) Network
d) Transport
Correct Answer: d) Transport
Explanation: The Transport layer ensures error-free data transmission by managing flow control, error correction, and retransmission of lost data.
Question 16
What type of network attack involves overwhelming a system with excessive requests?
a) Phishing
b) Spoofing
c) DoS (Denial of Service)
d) Man-in-the-middle
orrect Answer: c) DoS (Denial of Service)
Explanation: A DoS attack involves overwhelming a system with excessive traffic to disrupt its normal functioning.
Question 17
Which protocol is used for securely transmitting data over the internet?
a) HTTP
b) FTP
c) SSH
d) Telnet
Correct Answer: c) SSH
Explanation: SSH (Secure Shell) provides a secure way to access remote devices and transmit data over the internet by encrypting the communication.
Question 18
Which device is used to segment a network and reduce broadcast traffic?
a) Hub
b) Router
c) Switch
d) Repeater
Correct Answer: c) Switch
Explanation: A switch segments a network by dividing it into multiple smaller sections, reducing broadcast traffic and improving overall network performance
Question 19
What is the function of a VPN (Virtual Private Network)?
a) To encrypt communication over public networks
b) To assign IP addresses
c) To filter network traffic
d) To translate domain names
Correct Answer: a) To encrypt communication over public networks
Explanation: A VPN creates a secure, encrypted connection over public networks, ensuring that data remains confidential during transmission.
Question 20
Which wireless standard offers the highest data transfer rate?
a) 802.11b
b) 802.11g
c) 802.11n
d) 802.11ac
Correct Answer: d) 802.11ac
Explanation: 802.11ac offers the highest data transfer rates among the wireless standards, supporting gigabit speeds.
