Cisco Certified Support Technician (CCST) NetworkingIP ConnectivityMedium
A technician is examining the routing table of a Cisco router and sees an entry for network 10.10.10.0/24 with a next-hop IP address of 192.168.1.2 and an administrative distance of 1. What type of route is this entry most likely to be?
- AA static route
- BA dynamically learned OSPF route
- CA directly connected route
- DA Border Gateway Protocol (BGP) route
Show answer & explanationAnswer & explanation
Correct answer: A. A static route
A static route is manually configured by an administrator and has a default administrative distance of 1 in Cisco IOS. This makes it more preferred than most dynamic routing protocols (like OSPF's AD 110 or BGP's AD 20) but less preferred than a directly connected route (AD 0).
Why the other options are wrong
- B. OSPF routes have a default administrative distance of 110, not 1.
- C. Directly connected routes have an administrative distance of 0, indicating they are directly attached to the router.
- D. BGP routes have a default administrative distance of 20 (eBGP) or 200 (iBGP), not 1.
Static Route Administrative Distance
Static routes, manually configured by an administrator, have a default administrative distance of 1 in Cisco IOS, signifying high trustworthiness.
- Manually configured.
- Default AD of 1.
- Preferred over most dynamic routing protocols.
Memory trick: AD values are like a trust hierarchy, with 0 being absolute truth.