Cidr — Cisco CCNA (200-301) Practice Questions
CIDR (Classless Inter-Domain Routing) is a method of allocating IP addresses and routing that replaces the older classful addressing scheme, using a variable-length prefix notation such as /24 to specify the network portion of an address. On the CCNA 200-301 exam, CIDR is integral to subnetting, route summarization, and interpreting routing tables, as all modern IP addressing uses CIDR notation. Candidates must be comfortable converting between prefix length and dotted-decimal subnet mask notation and performing calculations using either format. Route summarization using CIDR is also tested as a technique to reduce routing table size and improve scalability.
Free questions on cidr
How many usable host addresses are available in a /28 subnet?
Free question · medium · full answer + explanation
What is the subnet mask for a /24 network in decimal notation?
Free question · easy · full answer + explanation
More cidr questions in the full bank
- What is the subnet mask in binary for a /28 CIDR network? Unlock answer & explanation →
- What is the maximum number of subnets created with a /28 subnet mask? Unlock answer & explanation →
- In a subnetting scenario with 192.168.1.0/25, how many usable host addresses are available? Unlock answer & explanation →