Ait CCNA 1 Network Fundamentals Rec Chapter 5
This chapter test you knowledge of Layer 3 of the OSI Model as presented in the Exploration 1 Nework Fundamentals course.
Questions and Answers
- 1.
MAC and IP are address types at different OSI layers. What does MAC stand for?
- A.
Media Accounting Cemter
- B.
Media Access Control
- C.
Method Access Control
- D.
MacDonald Accumulator Certification
- E.
None of the above
Correct Answer
B. Media Access ControlExplanation
MAC stands for Media Access Control. It is a unique identifier assigned to network interface controllers for communications on a physical network segment. MAC addresses are used at the data link layer of the OSI model to control access to the network and ensure that data packets are delivered to the correct destination.Rate this question:
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- 2.
The IP address has ______ bits and the MAC address has ____ bits.
- A.
64, 32
- B.
32, 48
- C.
48, 32
- D.
128, 256
- E.
4, 6
Correct Answer
B. 32, 48Explanation
The IP address is a 32-bit address used to identify devices on a network, while the MAC address is a 48-bit address assigned to the network interface card of a device. The IP address is used for routing and communication between devices over the internet, while the MAC address is used for local network communication.Rate this question:
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- 3.
What calss is the address 10.1.1.2 255.0.0.0
- A.
A
- B.
B
- C.
C
- D.
D
- E.
E
Correct Answer
A. AExplanation
The given IP address 10.1.1.2 with subnet mask 255.0.0.0 belongs to class A. In classful IP addressing, class A addresses have the first octet in the range of 1-126, and the remaining three octets are used to identify hosts within the network. The subnet mask 255.0.0.0 indicates that the network portion is only the first octet, leaving the remaining three octets for host addressing. Therefore, the given IP address falls within the range of class A addresses.Rate this question:
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- 4.
What class is the address 172.168.12.0 /16
- A.
A
- B.
B
- C.
C
- D.
D
- E.
E
Correct Answer
B. BExplanation
The address 172.168.12.0 /16 belongs to Class B. This is because the first octet of the address, 172, falls within the range of 128-191, which is designated for Class B addresses. Class B addresses have a subnet mask of 255.255.0.0 (or /16 in CIDR notation), which means that the first two octets are used to identify the network portion of the address and the last two octets are used to identify the host portion.Rate this question:
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- 5.
What type of address is 172.168.1.2 255.255.0.0?
- A.
Host
- B.
Broadcast
- C.
Multicast
- D.
Home
- E.
Network
Correct Answer
A. HostExplanation
The given IP address 172.168.1.2 with subnet mask 255.255.0.0 represents a host address. The subnet mask 255.255.0.0 indicates that the first two octets (172.168) represent the network address, while the last two octets (1.2) represent the host address within that network. Therefore, the IP address 172.168.1.2 is a host address within the network 172.168.0.0.Rate this question:
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