01
Front
What is the general IOS/IOS XE command for an IPv4 static route?
Back
Use `ip route destination-network subnet-mask next-hop-ip [administrative-distance]`.
Free Online Flashcard Deck
2 Static Routing Practice Free Online FlashCards
Study 2 Static Routing Practice with 12 free online flashcards. Review key terms, definitions, and concepts with this interactive flashcard deck.
12 cards
02
Front
What must a next-hop-only static route resolve to?
Back
A next-hop-only static route is recursive: the router must already have a route that resolves the next-hop address to an outgoing interface.
03
Front
How do you remove a configured static route?
Back
Repeat the route command with `no` at the start, for example: `no ip route 192.168.20.0 255.255.255.0 10.0.12.2`.
04
Front
How is an IPv4 default route represented in IOS/IOS XE?
Back
Configure `ip route 0.0.0.0 0.0.0.0 next-hop-ip`. The zero destination and mask define the IPv4 default route.
05
Front
What makes a static route “float” as a backup?
Back
A floating static route has a higher administrative distance than the preferred route to the same destination, so it is selected as a backup when the preferred route is no longer installed.
06
Front
What are the default administrative distances for static routes and OSPF?
Back
A regular static route has a default AD of 1; OSPF has a default AD of 110.
07
Front
Which route wins when matching prefixes have different lengths?
Back
The router forwards using the most specific matching installed prefix, regardless of whether a less-specific route has a lower AD.
08
Front
Which command displays the routing table, and what do `S` and `O` identify?
Back
Use `show ip route` to inspect installed routes. `S` marks a static route and `O` marks an OSPF route.
09
Front
What routing issue can prevent replies even when the forward path works?
Back
A forward path may work while the remote router lacks a route back to the source network. Verify routing in both directions.
10
Front
When does a router use a default route?
Back
It is used when no more-specific matching route is installed in the routing table.
11
Front
What AD should a floating static route use to back up OSPF?
Back
An OSPF backup static route needs an AD higher than 110; 120 is one example.
12
Front
How does administrative distance compare routes to the same prefix?
Back
For competing routes to the same prefix from different sources, the router normally installs the route with the lowest AD.
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