Know Everything Quiz About Mac Address
A media access control address is a unique identifier assigned to a network interface controller for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth.
This is a Know Everything Quiz about MAC ADDRESS
- 1.
How does a switch “learn” MAC addresses?
- A.
The switch uses a mathematical formula to determine what the MAC address would be for each computer connected to it.
- B.
The switch comes loaded with the most frequently used addresses.
- C.
The switch reads each frame and makes a note of where each MAC address came from.
- D.
All the MAC addresses must be entered manually.
Correct Answer
C. The switch reads each frame and makes a note of where each MAC address came from.Explanation
The switch learns MAC addresses by reading each frame and keeping track of the source MAC address. This allows the switch to build a table that associates MAC addresses with the corresponding switch ports. By doing so, the switch can efficiently forward frames to the appropriate destination ports based on the MAC address in the frame.Rate this question:
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- 2.
A MAC address is composed of two 24-bit numbers. What does the first 24-bit number represent?
- A.
It’s the decryption key used for security purposes.
- B.
It’s the address it uses for a multicast packet.
- C.
It’s a unique serial number assigned by the manufacturer.
- D.
It’s the organizationally unique identifier for the manufacturer of the device.
Correct Answer
D. It’s the organizationally unique identifier for the manufacturer of the device.Explanation
The first 24-bit number in a MAC address represents the organizationally unique identifier for the manufacturer of the device. This identifier is assigned to each manufacturer by the Institute of Electrical and Electronics Engineers (IEEE) and helps identify the manufacturer of the device. It does not serve as a decryption key, address for multicast packets, or a unique serial number assigned by the manufacturer.Rate this question:
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- 3.
Why is the use of a switch preferred over a hub?
- A.
Devices on a hub have to share the available bandwidth.
- B.
Switches are intelligent; they read the frame and determine where to send it.
- C.
Switches can operate in full-duplex mode.
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The use of a switch is preferred over a hub because devices on a hub have to share the available bandwidth, whereas switches are intelligent and can read the frame to determine where to send it. Additionally, switches can operate in full-duplex mode, allowing for simultaneous communication in both directions.Rate this question:
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- 4.
What component of the computer provides it with a MAC address?
- A.
BIOS
- B.
NIC
- C.
CPU
- D.
Motherboard
Correct Answer
B. NICExplanation
The Network Interface Card (NIC) is responsible for providing the computer with a MAC address. A MAC address is a unique identifier assigned to the NIC by the manufacturer. It is used to identify the device on a network and is essential for communication between devices. The NIC is a hardware component that connects the computer to a network, allowing it to send and receive data. Therefore, the NIC is the component that provides the computer with a MAC address.Rate this question:
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- 5.
A wireless access point is most like which other network device, in that all computers send signals through it to communicate with other computers?
- A.
Router
- B.
Modem
- C.
Hub
- D.
Switch
Correct Answer
C. HubExplanation
A wireless access point is similar to a hub in that both devices allow computers to send signals through them to communicate with other computers. A hub is a network device that connects multiple devices in a network, allowing them to share information. Similarly, a wireless access point acts as a central connection point for wireless devices, enabling them to communicate with each other and access the network. Both devices serve as a central hub for communication within a network.Rate this question:
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- 6.
What does a switch store in its switching table?
- A.
The destination MAC address of a frame and the port it was received on
- B.
the destination IP address of a frame and the port it was received on
- C.
The source IP address of a frame and the port it was received on
- D.
The source MAC address of a frame and the port it was received on
Correct Answer
D. The source MAC address of a frame and the port it was received onExplanation
A switch stores the source MAC address of a frame and the port it was received on in its switching table. This allows the switch to efficiently forward future frames to the correct destination by looking up the MAC address in its table and sending the frame out of the corresponding port. Storing the source MAC address also helps the switch to update its table if the device connected to a particular port changes.Rate this question:
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- 7.
Routers do not forward broadcast packets.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Routers do not forward broadcast packets because broadcast packets are intended to be sent to all devices on a network, and routers are designed to route packets between networks. Instead, routers use a technique called "broadcast suppression" to prevent broadcast packets from being forwarded to other networks. This helps to reduce network congestion and improve overall network performance.Rate this question:
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- 8.
When a frame is received, which component reads the source and destination MAC addresses, looks up the destination to determine where to send the frame, and forwards it out the correct port?
- A.
Router
- B.
Hub
- C.
Switch
- D.
Repeater
Correct Answer
C. SwitchExplanation
A switch reads the source and destination MAC addresses of a received frame, looks up the destination in its MAC address table, and forwards the frame out the correct port. This allows the switch to direct the frame to the intended recipient and optimize network performance by only sending the frame to the necessary port, rather than broadcasting it to all ports like a hub would. Routers, repeaters, and hubs do not perform this specific function, making the switch the correct answer.Rate this question:
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- 9.
What is the purpose of the default route?
- A.
It serves as a guideline for how to configure routes.
- B.
It’s a route set by Microsoft so that all information comes to their servers first.
- C.
It’s where the router sends all packets with destinations of which it has no knowledge.
- D.
None of the above
Correct Answer
C. It’s where the router sends all packets with destinations of which it has no knowledge.Explanation
The purpose of the default route is to serve as a destination for all packets that the router does not have specific knowledge about. When a router receives a packet with a destination address that it does not have a specific route for, it will forward the packet to the default route. This allows the router to handle any packets that do not match any specific routes in its routing table, ensuring that they are not dropped or lost.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 20, 2017Quiz Created by
Mekaelejigu
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