Redhat IP Addresses - Quiz Explanation
The answers you selected are indicated below, along with text that explains the correct answers.
1.
What is the largest representable IP address?
Please select the best answer.
A.
10.13.0.16
B.
255.1.228.23
C.
255.255.255.255
D.
255.255.255.0
The correct answer is C.
The largest representable IP address fills all 32 bits with ones, so every quad would look like 11111111 in binary, or 255 in decimal. Therefore, the only correct answer is 255.255.255.255.
2.
Why did IP designers break IP addresses into classes?
Please select the best answer.
A.
To make it easier for computers to handle 32-bit IP addresses
B.
To clear up any confusion the "dotted quad" notation introduced
C.
To provide a validation mechanism for IP addresses
D.
To accommodate differing network usage
The correct answer is D.
IP designers accommodated differing network usages with IP address classes. Answer A is incorrect because computers (even computers from the 1980s when IP became standard), easily handle 32-bit IP addresses. Answer B is incorrect because the dotted quad notation is simple enough and requires no clarification. Answer C is incorrect because all validation for IP addresses is handled by checksums in IP packets.
3.
What do the dots in an IP address provide?
Please select the best answer.
A.
A visual separation between quads
B.
An IP address validation scheme
C.
An indication of the network class
D.
A method to describe an IP packet's route
The correct answer is A.
Dots visually separate the quads in an IP address. Answer B is incorrect because IP itself performs address validation and does not rely on the dots. Answer C is incorrect because the address itself indicates the class, not the dots. Answer D is incorrect because gateways decide how to route IP packets.