1
Q
Front
A
Back
2
Q
What is the length of an IPv4 address?
A
32 bits.
3
Q
What two parts make up an IPv4 address?
A
Subnet part and host part.
4
Q
What is a subnet?
A
Interfaces that can reach each other without a router.
5
Q
What does a /24 mask mean?
A
First 24 bits identify the subnet.
6
Q
What is decimal mask for /20?
A
255.255.240.0.
7
Q
What does CIDR allow?
A
Arbitrary length prefixes.
8
Q
How do you find number of subnets when growing prefix?
A
Added bits = newprefix - oldprefix.
9
Q
What is longest prefix match?
A
Router picks the most specific matching prefix.
10
Q
Why is longest prefix match needed?
A
Allows hierarchical addressing and aggregation.
11
Q
If multiple entries match what does router choose?
A
The longest prefix.
12
Q
What is route aggregation?
A
Advertising one larger prefix for many subnets.
internet technology
flashcards
Decks in class (11)
# Cards
