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web.groovymark@gmail.com
- November 18, 2024
Question 01
What is the primary purpose of a hub in a network?
a) To route traffic between networks
b) To regenerate and forward data packets to all devices connected
c) To assign IP addresses to devices
d) To filter traffic based on MAC addresses
Correct Answer: b) To regenerate and forward data packets to all devices connected
Explanation: A hub is a simple network device that regenerates and forwards data to all devices connected to it, without distinguishing between recipients.
Question 02
Which network protocol provides automatic IP addressing when a DHCP server is unavailable?
a) DNS
b) ARP
c) APIPA
d) FTP
Correct Answer: c) APIPA
Explanation: APIPA (Automatic Private IP Addressing) assigns a private IP address to a device when a DHCP server cannot be reached, allowing local network communication.
Question 03
What is the function of a VLAN (Virtual Local Area Network)?
a) To divide a physical network into multiple logical networks
b) To encrypt network traffic
c) To automatically assign IP addresses to devices
d) To amplify weak signals in a network
Correct Answer: a) To divide a physical network into multiple logical networks
Explanation: A VLAN allows network administrators to segment a network into multiple logical groups, improving traffic management and security.
Question 04
Which device is responsible for converting digital data into analog signals and vice versa?
a) Repeater
b) Modem
c) Hub
d) Switch
Correct Answer: b) Modem
Explanation: A modem (modulator-demodulator) converts digital data into analog signals for transmission over analog communication lines and vice versa.
Question 05
What is the purpose of a firewall?
a) To assign dynamic IP addresses
b) To filter network traffic based on security rules
c) To regenerate weak signals in a network
d) To manage network cables
Correct Answer: b) To filter network traffic based on security rules
Explanation: A firewall monitors and controls incoming and outgoing traffic based on security rules, helping protect the network from unauthorized access.
Question 06
What is the main function of a switch in a network?
a) To amplify wireless signals
b) To forward data based on MAC addresses
c) To route data between networks
d) To assign IP addresses dynamically
Correct Answer: b) To forward data based on MAC addresses
Explanation: A switch uses MAC addresses to forward data to the appropriate destination, making it more efficient than a hub, which broadcasts data to all devices.
Question 07
What does the acronym DHCP stand for?
a) Domain Host Control Protocol
b) Dynamic Host Configuration Protocol
c) Data Host Communication Protocol
d) Dynamic Hub Communication Protocol
Correct Answer: b) Dynamic Host Configuration Protocol
Explanation: DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to devices on a network, simplifying network management.
Question 08
What type of network topology connects all devices to a single central point?
a) Bus topology
b) Ring topology
c) Star topology
d) Mesh topology
Correct Answer: c) Star topology
Explanation: In a star topology, all devices are connected to a single central point, such as a hub or switch, which manages the communication between them.
Question 09
What does a VPN (Virtual Private Network) provide?
a) Data encryption over the internet
b) Dynamic IP addressing
c) Faster network speeds
d) Automatic VLAN configuration
Correct Answer: a) Data encryption over the internet
Explanation: A VPN provides secure, encrypted communication over the internet, allowing users to securely connect to remote networks as if they were local.
Question 10
Which protocol is used to retrieve email from a server?
a) FTP
b) HTTP
c) IMAP
d) DNS
Correct Answer: c) IMAP
Explanation: IMAP (Internet Message Access Protocol) is used for retrieving email from a server, allowing users to synchronize emails across multiple devices.
Question 11
What is the function of a patch panel in a network?
a) To filter network traffic
b) To terminate and organize network cables
c) To amplify network signals
d) To assign dynamic IP addresses
Correct Answer: b) To terminate and organize network cables
Explanation: A patch panel is used to terminate and manage network cables, providing a convenient way to connect and organize cables in a network infrastructure.
Question 12
What is the purpose of NAT (Network Address Translation)?
a) To resolve domain names to IP addresses
b) To allow devices on a private network to communicate with external networks using a shared public IP address
c) To encrypt data for secure transmission
d) To assign dynamic IP addresses
Correct Answer: b) To allow devices on a private network to communicate with external networks using a shared public IP address
Explanation: NAT translates private IP addresses into a single public IP address, allowing devices on a private network to access the internet.
Question 13
What type of address is used to send data to all devices on a network?
a) Unicast address
b) Multicast address
c) Broadcast address
d) Anycast address
Correct Answer: c) Broadcast address
Explanation: A broadcast address is used to send data to all devices on a network, commonly used for network-wide announcements or requests.
Question 14
What is a common cause of electromagnetic interference (EMI) in a network?
a) Excessive network traffic
b) Cable shielding failure
c) Dynamic IP assignment
d) Multiple VLANs on a single switch
Correct Answer: b) Cable shielding failure
Explanation: EMI occurs when unshielded or poorly shielded cables are exposed to electromagnetic sources, such as power lines or other electronic devices, leading to signal interference.
Question 15
Which device is used to connect different networks together and route traffic between them?
a) Router
b) Hub
c) Switch
d) Repeater
Correct Answer: a) Router
Explanation: A router connects different networks together and routes data packets between them based on IP addresses.
Question 16
What is the function of a MAC (Media Access Control) address?
a) To uniquely identify a network interface device
b) To encrypt data for secure transmission
c) To assign IP addresses dynamically
d) To manage network topology
Correct Answer: a) To uniquely identify a network interface device
Explanation: A MAC address is a unique identifier assigned to network interfaces for communication on the data link layer (Layer 2) of a network.
Question 17
What does a VLAN allow network administrators to do?
a) Encrypt network traffic for security
b) Segment a network into logical groups
c) Assign dynamic IP addresses to devices
d) Amplify network signals over long distances
Correct Answer: b) Segment a network into logical groups
Explanation: VLANs allow administrators to logically segment a network, grouping devices based on function, department, or other criteria, without physical separation.
Question 18
Which network device is responsible for connecting wireless devices to a wired network?
a) Switch
b) Router
c) Wireless access point
d) Firewall
Correct Answer: c) Wireless access point
Explanation: A wireless access point (WAP) connects wireless devices to a wired network, allowing them to communicate with other devices and access network resources.
Question 19
What is the primary function of a Certificate Authority (CA) in network security?
a) To issue digital certificates for secure communication
b) To assign dynamic IP addresses
c) To manage VLAN traffic
d) To encrypt data for secure transmission
Correct Answer: a) To issue digital certificates for secure communication
Explanation: A Certificate Authority (CA) issues digital certificates, which are used to authenticate the identity of entities and establish secure communication channels.
Question 20
What does the term “attenuation” refer to in networking?
a) The loss of signal strength over a distance
b) The amplification of a network signal
c) The process of encrypting data
d) The method of dynamic IP assignment
Correct Answer: a) The loss of signal strength over a distance
Explanation: Attenuation refers to the weakening of a signal as it travels over a network, which can result in degraded performance.
