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web.groovymark@gmail.com
- November 18, 2024
Question 21
What is the purpose of a RAID 5 configuration?
a) To provide data redundancy and improve read/write performance
b) To assign dynamic IP addresses
c) To filter network traffic
d) To segment a network into VLANs
Correct Answer: a) To provide data redundancy and improve read/write performance
Explanation: RAID 5 offers data redundancy by distributing parity data across multiple drives, improving both performance and fault tolerance.
Question 22
What is the purpose of a demilitarized zone (DMZ) in network security?
a) To assign IP addresses to devices
b) To provide a buffer zone between internal networks and external networks
c) To filter network traffic based on predefined rules
d) To manage VLAN communication
Correct Answer: b) To provide a buffer zone between internal networks and external networks
Explanation: A DMZ isolates public-facing services, such as web servers, from the internal network, reducing the risk of external attacks.
Question 23
What type of cable is commonly used for short-distance networking, such as in offices or homes?
a) Fiber-optic cable
b) Coaxial cable
c) Twisted-pair cable
d) USB cable
Correct Answer: c) Twisted-pair cable
Explanation: Twisted-pair cables, such as Category 5e or Category 6, are commonly used for short-distance networking due to their low cost and ease of installation.
Question 24
What is the primary function of a repeater in a network?
a) To assign IP addresses to devices
b) To amplify or regenerate weak signals
c) To route data between networks
d) To filter network traffic
Correct Answer: b) To amplify or regenerate weak signals
Explanation: A repeater amplifies or regenerates weak signals, allowing data to travel longer distances without signal degradation.
Question 25
Which protocol is commonly used for transferring files over a network?
a) HTTP
b) DNS
c) FTP
d) DHCP
Correct Answer: c) FTP
Explanation: FTP (File Transfer Protocol) is used for transferring files between computers on a network, offering both standard and secure versions.
Question 26
What is the function of a proxy server in a network?
a) To filter and cache requests between clients and servers
b) To route data between networks
c) To encrypt data transmissions
d) To amplify wireless signals
Correct Answer: a) To filter and cache requests between clients and servers
Explanation: A proxy server acts as an intermediary between clients and servers, filtering and caching requests to improve security and performance.
Question 27
What is the purpose of a subnet mask in IP addressing?
a) To encrypt data transmissions
b) To divide an IP address into network and host portions
c) To filter traffic based on MAC addresses
d) To manage VLAN traffic
Correct Answer: b) To divide an IP address into network and host portions
Explanation: A subnet mask helps identify which part of an IP address belongs to the network and which part identifies the host, aiding in network segmentation.
Question 28
What does an IDS (Intrusion Detection System) do?
a) It assigns dynamic IP addresses
b) It detects and alerts administrators of unauthorized network activity
c) It encrypts data for secure communication
d) It routes traffic between networks
Correct Answer: b) It detects and alerts administrators of unauthorized network activity
Explanation: An IDS monitors network traffic for suspicious activity and alerts administrators to potential security threats.
Question 29
What is a major advantage of fiber-optic cables over copper cables?
a) Lower cost
b) Higher resistance to electromagnetic interference
c) Easier installation
d) Better support for legacy systems
Correct Answer: b) Higher resistance to electromagnetic interference
Explanation: Fiber-optic cables are immune to electromagnetic interference, making them ideal for high-speed, long-distance communication.
Question 30
What is the function of a wireless access point (WAP)?
a) To route data between networks
b) To provide dynamic IP addressing
c) To connect wireless devices to a wired network
d) To amplify network signals
Correct Answer: c) To connect wireless devices to a wired network
Explanation: A wireless access point allows wireless devices to connect to a wired network, enabling communication between wireless and wired devices.
Question 31
What is the purpose of a UPS (Uninterruptible Power Supply) in a network?
a) To encrypt data for secure transmission
b) To provide backup power in case of an electrical failure
c) To assign dynamic IP addresses to devices
d) To route traffic between different networks
Correct Answer: b) To provide backup power in case of an electrical failure
Explanation: A UPS provides backup power to network devices during an electrical failure, ensuring that critical systems remain operational.
Question 32
What is the primary purpose of the OSI model?
a) To encrypt data for secure communication
b) To standardize network communication by dividing it into seven layers
c) To assign dynamic IP addresses to devices
d) To filter network traffic based on predefined rules
Correct Answer: b) To standardize network communication by dividing it into seven layers
Explanation: The OSI model provides a framework for network communication by breaking it into seven distinct layers, helping different protocols and devices interoperate.
Question 33
What is the function of a firewall in a network?
a) To assign dynamic IP addresses
b) To filter network traffic based on predefined security rules
c) To route data between different networks
d) To amplify weak signals
Correct Answer: b) To filter network traffic based on predefined security rules
Explanation: A firewall protects a network by filtering incoming and outgoing traffic according to security policies, helping prevent unauthorized access.
Question 34
What is the purpose of a DNS server?
a) To resolve domain names into IP addresses
b) To assign dynamic IP addresses
c) To encrypt network traffic
d) To amplify signals in a network
Correct Answer: a) To resolve domain names into IP addresses
Explanation: A DNS server translates human-readable domain names into machine-readable IP addresses, enabling communication between devices on the internet.
Question 35
What is the function of a RAID 1 configuration?
a) To increase read/write performance
b) To provide data redundancy through mirroring
c) To assign IP addresses dynamically
d) To segment a network into VLANs
Correct Answer: b) To provide data redundancy through mirroring
Explanation: RAID 1 mirrors data across two or more drives, providing data redundancy and ensuring that data is preserved in the event of a hardware failure.
Question 36
What does a dynamic IP address mean?
a) An IP address assigned manually by the network administrator
b) An IP address assigned automatically by a DHCP server
c) An IP address used for encrypting network traffic
d) An IP address that changes frequently based on network traffic
Correct Answer: b) An IP address assigned automatically by a DHCP server
Explanation: A dynamic IP address is automatically assigned by a DHCP server and may change when the device reconnects to the network.
Question 37
What is a VLAN trunk used for in a network?
a) To amplify network signals
b) To connect multiple VLANs across a single physical link
c) To assign IP addresses dynamically
d) To route data between different networks
Correct Answer: b) To connect multiple VLANs across a single physical link
Explanation: A VLAN trunk carries traffic from multiple VLANs over a single network link, enabling VLAN communication between switches.
Question 38
What type of address is used to send data to a specific device on a network?
a) Broadcast address
b) Unicast address
c) Multicast address
d) Anycast address
Correct Answer: b) Unicast address
Explanation: A unicast address is used to send data to a single, specific device on a network, ensuring the data reaches the intended recipient.
Question 39
What is the purpose of the presentation layer in the OSI model?
a) To encrypt and format data for transmission
b) To assign IP addresses to devices
c) To route data between networks
d) To manage physical network connections
Correct Answer: a) To encrypt and format data for transmission
Explanation: The presentation layer (Layer 6) is responsible for data formatting, encryption, and compression, ensuring that data is properly prepared for transmission between applications.
Question 40
What does a proxy server do in a network?
a) It filters and caches client requests to improve performance
b) It assigns IP addresses to devices dynamically
c) It routes data between different networks
d) It amplifies weak network signals
Correct Answer: a) It filters and caches client requests to improve performance
Explanation: A proxy server acts as an intermediary between clients and servers, filtering and caching requests to enhance security and network efficiency.
