A MAC address, short for Media Access Control address, is a unique identifier assigned to a network interface controller (NIC) in a device, such as a computer, smartphone, or router. It consists of a 48-bit number, typically represented in hexadecimal format (e.g., 00:1A:2B:3C:4D:5E), and serves as a hardware address for communication on local networks. MAC addresses operate at the data link layer of the OSI model, ensuring that data packets are accurately routed to the intended device within the same network segment. They are assigned by the manufacturer and are often hardcoded into the device’s hardware.
Table of contents
- Part 1: Best AI quiz making software for creating a MAC address quiz
- Part 2: 20 MAC address quiz questions & answers
- Part 3: Automatically generate quiz questions using AI Question Generator
Part 1: Best AI quiz making software for creating a MAC address quiz
OnlineExamMaker is a powerful AI-powered assessment platform to create auto-grading MAC address assessments. It’s designed for educators, trainers, businesses, and anyone looking to generate engaging quizzes without spending hours crafting questions manually. The AI Question Generator feature allows you to input a topic or specific details, and it generates a variety of question types automatically.
Top features for assessment organizers:
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Part 2: 20 MAC address quiz questions & answers
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1. What is a MAC address primarily used for in a network?
A. To identify a device on the internet
B. To uniquely identify a network interface controller
C. To route data between different networks
D. To encrypt data packets
Answer: B
Explanation: A MAC address is a unique identifier assigned to network interfaces for communications on the physical network segment.
2. How many bits are in a standard MAC address?
A. 32 bits
B. 48 bits
C. 64 bits
D. 128 bits
Answer: B
Explanation: MAC addresses are 48 bits long, which allows for a vast number of unique addresses.
3. Which of the following is the correct format for a MAC address?
A. 192.168.1.1
B. AA:BB:CC:DD:EE:FF
C. 2001:0db8:85a3:0000:0000:8a2e:0370:7334
D. example.com
Answer: B
Explanation: MAC addresses are typically written in hexadecimal format separated by colons, such as AA:BB:CC:DD:EE:FF.
4. What does the first half of a MAC address represent?
A. The device manufacturer’s code
B. The network segment
C. The IP address association
D. The broadcast domain
Answer: A
Explanation: The first 24 bits of a MAC address form the Organizationally Unique Identifier (OUI), which identifies the manufacturer.
5. Which type of MAC address starts with 01:00:5E?
A. Unicast
B. Broadcast
C. Multicast
D. Anycast
Answer: C
Explanation: MAC addresses beginning with 01:00:5E are reserved for multicast communications.
6. Can a MAC address be changed on a device?
A. Yes, it can be changed permanently
B. No, it is hardcoded and unchangeable
C. Yes, but only temporarily through software
D. Yes, but it requires hardware replacement
Answer: C
Explanation: While MAC addresses are assigned by manufacturers, they can be spoofed or changed temporarily via software settings.
7. What is the broadcast MAC address?
A. FF:FF:FF:FF:FF:FF
B. 00:00:00:00:00:00
C. 01:00:5E:00:00:01
D. AA:AA:AA:AA:AA:AA
Answer: A
Explanation: FF:FF:FF:FF:FF:FF is used to send packets to all devices on the local network.
8. How are MAC addresses assigned?
A. Dynamically by DHCP servers
B. Statically by device manufacturers
C. Randomly by the operating system
D. Through user configuration during setup
Answer: B
Explanation: MAC addresses are hardcoded by manufacturers and are unique to each network interface.
9. Which of the following is not a valid MAC address?
A. 00:1A:2B:3C:4D:5E
B. 123.456.789.012
C. AC:DE:48:23:1B:FC
D. 70:4D:7B:8C:9A:2E
Answer: B
Explanation: MAC addresses must be in hexadecimal format; 123.456.789.012 uses decimal notation, which is invalid.
10. What is the difference between a MAC address and an IP address?
A. MAC addresses are global; IP addresses are local
B. MAC addresses operate at the data link layer; IP addresses at the network layer
C. IP addresses are unique; MAC addresses can be duplicated
D. MAC addresses change frequently; IP addresses do not
Answer: B
Explanation: MAC addresses function at Layer 2 (data link) of the OSI model, while IP addresses operate at Layer 3 (network).
11. How many hexadecimal digits are in a standard MAC address?
A. 6
B. 12
C. 16
D. 24
Answer: B
Explanation: A 48-bit MAC address consists of 12 hexadecimal digits (each pair representing 8 bits).
12. What happens if two devices on the same network have the same MAC address?
A. They will communicate normally
B. Network conflicts and errors will occur
C. The devices will automatically rename themselves
D. Nothing, as MAC addresses are not checked
Answer: B
Explanation: Duplicate MAC addresses can cause packet collisions and network instability.
13. Which organization assigns OUIs for MAC addresses?
A. IANA
B. IEEE
C. ICANN
D. ISO
Answer: B
Explanation: The IEEE Registration Authority assigns the first 24 bits (OUI) of MAC addresses to manufacturers.
14. Is a MAC address used for routing packets across the internet?
A. Yes, it is the primary routing method
B. No, it is only used on local networks
C. Yes, but only for IPv6
D. No, it is replaced by IP addresses
Answer: B
Explanation: MAC addresses are used for local network communication, while IP addresses handle routing over the internet.
15. What is a locally administered MAC address?
A. Assigned by the manufacturer
B. Configured by network administrators
C. Used only for wireless networks
D. A broadcast address
Answer: B
Explanation: Locally administered addresses are manually set by administrators, overriding the manufacturer’s assigned address.
16. Which of the following MAC addresses is a unicast address?
A. FF:FF:FF:FF:FF:FF
B. 01:00:5E:01:02:03
C. 00:11:22:33:44:55
D. 33:33:00:00:00:01
Answer: C
Explanation: Unicast addresses do not start with special reserved values like FF:FF for broadcast or 01:00:5E for multicast.
17. Can MAC addresses be filtered for security purposes?
A. No, they are not visible to networks
B. Yes, using MAC address filtering on routers
C. Only on wired networks
D. Yes, but it is ineffective
Answer: B
Explanation: MAC address filtering allows administrators to permit or deny access based on specific MAC addresses.
18. What is the purpose of the universal/local bit in a MAC address?
A. To indicate if it’s a multicast address
B. To show if it’s universally or locally administered
C. To specify the device type
D. To denote the network speed
Answer: B
Explanation: The second least significant bit of the first octet indicates whether the address is universally administered (by IEEE) or locally administered.
19. How are MAC addresses represented in Windows command line?
A. As dotted decimal notation
B. In hexadecimal with hyphens
C. In binary format
D. As a single hexadecimal string
Answer: B
Explanation: In Windows, MAC addresses are often displayed with hyphens, like 00-1A-2B-3C-4D-5E.
20. What is the range of the first octet for a multicast MAC address?
A. 00 to 0F
B. 01 to 7F
C. 01:00:5E:xx:xx:xx
D. FF to FF
Answer: C
Explanation: Multicast MAC addresses specifically start with 01:00:5E, as defined by IEEE standards.
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Part 3: Automatically generate quiz questions using OnlineExamMaker AI Question Generator
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