EXAM-STYLE QUESTIONS
EXAM-STYLE QUESTIONS
Q&A
Q&A
Q&A
What is a Network Interface Card (NIC) used for?
Answer: To allow a device to connect to a network.
How does an NIC convert data for network communication?
Answer: It turns binary data into an electrical signal.
Where is the NIC usually found in modern computers?
Answer: Integrated into the motherboard.
What does MAC stand for in MAC address?
Answer: Media Access Control.
How many bits are in a MAC address?
Answer: 48 bits.
What does an NIC’s MAC address uniquely identify?
Answer: The device on a network.
What happens to the MAC address when an NIC is replaced?
Answer: The MAC address changes.
How is a MAC address typically represented?
Answer: As six groups of hexadecimal digits.
Why is a MAC address called a physical address?
Answer: Because it uniquely identifies a device and does not change.
What does an IP address indicate?
Answer: The location of a device on a network.
Who assigns an IP address when a device connects to the internet?
Answer: The Internet Service Provider (ISP).
What is the key difference between MAC addresses and IP addresses?
Answer: MAC addresses are fixed, while IP addresses change based on location.
How many bits does an IPv4 address contain?
Answer: 32 bits.
How many bits does an IPv6 address contain?
Answer: 128 bits.
Why was IPv6 introduced?
Answer: To accommodate the growing number of devices connected to the internet.
What is a data packet?
Answer: A unit of data sent over a network.
What information is included in a data packet header?
Answer: Sender’s IP, receiver’s IP, sequence number, packet size, and total number of packets.
What is the function of a router?
Answer: To route data packets between different networks.
How does a router determine the next destination of a data packet?
Answer: By checking its routing table.
What is a hub used for?
Answer: To connect multiple devices in a local area network (LAN).
What is the main drawback of using a hub?
Answer: It sends data to all connected devices, causing unnecessary traffic.
How is a switch different from a hub?
Answer: A switch directs data to specific devices using MAC addresses.
What is a look-up table in a switch?
Answer: A table storing MAC addresses of connected devices.
Why is a switch more secure than a hub?
Answer: Because it sends data only to the intended recipient.
What is a bridge used for in networking?
Answer: To connect two LANs using the same communication protocol.
How does a bridge identify devices?
Answer: Using MAC addresses.
Can a bridge connect to an external network like the internet?
Answer: No, bridges only connect LANs.
What is the main purpose of a router?
Answer: To connect different networks and route data between them.
How does a router determine where to send data?
Answer: By checking the IP address in the packet.
What does a routing table contain?
Answer: Information about networks and their paths.
What is the role of a firewall in a network?
Answer: To block unauthorized access and filter traffic.
What is Wi-Fi used for?
Answer: Wireless communication between devices.
What frequency bands does Wi-Fi use?
Answer: 2.4 GHz and 5 GHz.
What is Bluetooth mainly used for?
Answer: Short-range wireless communication between devices.
What is spread-spectrum frequency hopping in Bluetooth?
Answer: Changing frequency channels multiple times per second to avoid interference.
How does cloud computing store data?
Answer: On remote servers accessed via the internet.
What is an advantage of cloud storage?
Answer: Files can be accessed from anywhere.
What is a disadvantage of cloud storage?
Answer: Potential data security risks.
What is a private cloud?
Answer: A cloud storage environment dedicated to one organization.
What is a public cloud?
Answer: A cloud storage service shared among multiple users.
What is a hybrid cloud?
Answer: A combination of public and private cloud storage.
What is the purpose of an intranet?
Answer: A private network for internal use within an organization.
How is an extranet different from an intranet?
Answer: An extranet allows external users to access certain internal resources.
What is a LAN?
Answer: A network that covers a small geographical area, such as a building.
What is a WLAN?
Answer: A wireless version of a LAN.
What is a WAN?
Answer: A network covering a large geographical area.
What is an advantage of LANs?
Answer: They allow resource sharing.
What is a disadvantage of LANs?
Answer: Higher security risks compared to standalone computers.
What are access points (APs) used for?
Answer: Connecting devices to a WLAN.
What is the primary function of a switch?
Answer: To forward data to specific devices using MAC addresses.
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