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web.groovymark@gmail.com
- November 18, 2024
Question 01
What is the primary function of a repeater in a network?
a) To filter data packets
b) To amplify or regenerate weak signals
c) To assign IP addresses
d) To manage VLAN traffic
Correct Answer: b) To amplify or regenerate weak signals
Explanation: A repeater regenerates and amplifies weak signals in a network, allowing data to travel longer distances without loss of quality.
Question 02
Which protocol is responsible for resolving hostnames to IP addresses?
a) FTP
b) DHCP
c) DNS
d) SMTP
Correct Answer: c) DNS
Explanation: DNS (Domain Name System) resolves human-readable hostnames into machine-readable IP addresses, enabling communication between devices on a network.
Question 03
What is the function of a firewall?
a) To assign dynamic IP addresses
b) To filter incoming and outgoing traffic based on predefined security rules
c) To connect multiple networks together
d) To amplify network signals
Correct Answer: b) To filter incoming and outgoing traffic based on predefined security rules
Explanation: A firewall monitors and controls traffic flowing in and out of a network, protecting it from unauthorized access and potential threats.
Question 04
What type of network topology uses a single central cable to connect all devices?
a) Star topology
b) Ring topology
c) Bus topology
d) Mesh topology
Correct Answer: c) Bus topology
Explanation: In a bus topology, all devices are connected to a single central cable, and data travels along this shared communication line.
Question 05
What does the acronym APIPA stand for?
a) Automatic Public IP Assignment
b) Automatic Private IP Addressing
c) Advanced Protocol Internet Addressing
d) Assigned Protocol for IP Addresses
Correct Answer: b) Automatic Private IP Addressing
Explanation: APIPA (Automatic Private IP Addressing) assigns a local IP address when a DHCP server is unavailable, allowing limited local network communication.
Question 06
Which device operates at the data link layer (Layer 2) of the OSI model?
a) Router
b) Switch
c) Repeater
d) Firewall
Correct Answer: b) Switch
Explanation: A switch operates at Layer 2 of the OSI model, using MAC addresses to forward data between devices on the same network segment.
Question 07
What is the main purpose of RAID (Redundant Array of Independent Disks)?
a) To encrypt network traffic
b) To assign dynamic IP addresses
c) To provide data redundancy and improve fault tolerance
d) To resolve hostnames to IP addresses
Correct Answer: c) To provide data redundancy and improve fault tolerance
Explanation: RAID provides data redundancy by storing data across multiple disks, protecting against data loss in the event of a hardware failure.
Question 08
Which protocol allows remote users to securely connect to a network over the internet?
a) HTTP
b) FTP
c) VPN
d) DNS
Correct Answer: c) VPN
Explanation: A Virtual Private Network (VPN) creates a secure, encrypted connection over the internet, allowing remote users to access network resources safely.
Question 09
What is the primary function of a switch in a network?
a) To route data between different networks
b) To filter and forward data based on MAC addresses
c) To amplify network signals
d) To assign IP addresses to devices
Correct Answer: b) To filter and forward data based on MAC addresses
Explanation: A switch operates at Layer 2 of the OSI model and uses MAC addresses to determine how data should be forwarded to the correct destination.
Question 10
What does attenuation refer to in networking?
a) The amplification of signals
b) The loss of signal strength over a distance
c) The process of encrypting data
d) The detection of signal interference
Correct Answer: b) The loss of signal strength over a distance
Explanation: Attenuation refers to the weakening of a signal as it travels over a network, resulting in reduced performance and reliability.
Question 11
What is the purpose of the Address Resolution Protocol (ARP)?
a) To resolve IP addresses to hostnames
b) To resolve MAC addresses to IP addresses
c) To resolve IP addresses to MAC addresses
d) To encrypt data packets for transmission
Correct Answer: c) To resolve IP addresses to MAC addresses
Explanation: ARP maps an IP address to its corresponding MAC address, allowing devices on the same network to communicate.
Question 12
Which type of VLAN is created by manually assigning ports to a VLAN?
a) Dynamic VLAN
b) Trunk VLAN
c) Static VLAN
d) Virtual VLAN
Correct Answer: c) Static VLAN
Explanation: A static VLAN is manually configured by assigning specific switch ports to a VLAN, ensuring consistent network segmentation.
Question 13
What is the primary purpose of a DNS server?
a) To filter network traffic based on IP addresses
b) To route data between different networks
c) To resolve domain names into IP addresses
d) To encrypt data for secure transmission
Correct Answer: c) To resolve domain names into IP addresses
Explanation: A DNS server translates domain names into IP addresses, making it easier for users to access websites and other resources on a network.
Question 14
What type of backup only copies files that have changed since the last full or incremental backup?
a) Full backup
b) Differential backup
c) Incremental backup
d) Snapshot backup
Correct Answer: c) Incremental backup
Explanation: An incremental backup copies only the files that have changed since the last full or incremental backup, making it faster and more efficient than a full backup.
Question 15
What is a VLAN trunk?
a) A method of amplifying signals over long distances
b) A link that carries multiple VLANs across a network
c) A type of firewall used for VLANs
d) A device that assigns VLANs dynamically
Correct Answer: b) A link that carries multiple VLANs across a network
Explanation: A VLAN trunk is a network link that carries data from multiple VLANs between switches, allowing VLANs to communicate across the network.
Question 16
Which type of topology allows for data to travel in both directions, but only one direction at a time?
a) Full-duplex
b) Half-duplex
c) Bus topology
d) Star topology
Correct Answer: b) Half-duplex
Explanation: In a half-duplex system, data can travel in both directions, but only one direction at a time, meaning communication is not simultaneous.
Question 17
What is the role of a Certificate Authority (CA) in network security?
a) To encrypt data during transmission
b) To assign IP addresses to devices
c) To issue and manage digital certificates for secure communications
d) To monitor network traffic for security threats
Correct Answer: c) To issue and manage digital certificates for secure communications
Explanation: A Certificate Authority (CA) is responsible for issuing and managing digital certificates, ensuring that secure communications can take place between parties.
Question 18
What type of network device connects multiple networks together and directs data packets between them?
a) Router
b) Switch
c) Hub
d) Repeater
Correct Answer: a) Router
Explanation: A router connects multiple networks and directs data packets between them, ensuring that data reaches its intended destination.
Question 19
What is the function of a patch panel in a network?
a) To filter traffic based on IP addresses
b) To encrypt data for secure transmission
c) To terminate network cables and provide organized cable management
d) To amplify weak network signals
Correct Answer: c) To terminate network cables and provide organized cable management
Explanation: A patch panel is used to terminate and manage network cables, offering a central location for connecting and managing network wiring.
Question 20
What does the acronym PoE stand for in networking?
a) Packet over Ethernet
b) Power over Ethernet
c) Protocol over Ethernet
d) Protection over Ethernet
Correct Answer: b) Power over Ethernet
Explanation: PoE (Power over Ethernet) allows network cables to carry both data and electrical power to devices such as IP cameras and wireless access points.
