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CCNA Flashcards
Free flashcards for Cisco CCNA (200-301): flip each card to reveal the definition. Built from the Cisco CCNA (200-301) glossary as a study aid, these are concept checks, not real exam questions.
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- Subnet
- A logical division of an IP network.
- Subnet mask
- Defines which part of an IP is network vs host.
- CIDR
- Slash notation for a subnet mask (e.g., /24).
- Default gateway
- The router a device uses to reach other networks.
- VLAN
- A logical segment of a switched network.
- Trunk
- A link carrying multiple VLANs (802.1Q tagging).
- STP
- Spanning Tree Protocol - prevents switching loops.
- EtherChannel
- Bundled links acting as one for bandwidth/redundancy.
- Routing table
- The list a router uses to choose paths.
- Static route
- A manually configured route.
- OSPF
- A link-state dynamic routing protocol.
- Administrative distance
- Trustworthiness ranking of a route source.
- NAT
- Network Address Translation, private to public.
- PAT
- Port Address Translation - many private IPs to one public.
- ACL
- Access Control List - filters traffic by rules.
- DHCP
- Automatically assigns IP addresses.
- DNS
- Resolves names to IP addresses.
- Switch vs router
- Forwards within a LAN vs between networks.
- Port security
- Restricts which devices can use a switch port.
- REST API
- A web interface used in network automation.