14 - Questions - Routing Operation
Which two of these options explain how a router learns destination networks? (Choose two.)
An administrator can enter routing information manually. The router runs the dynamic routing process to learn prefixes from neighbor routers.
Which two of these statements apply to dynamic routing protocols? (Choose two.)
Routers learn new networks by exchanging routing updates. Dynamic routing protocols automatically adjust routes when the topology or traffic changes
Related to static routes, which of these statements is correct?
Static routes stay the same from the time they are configured.
Which statement about static and dynamic routes is true?
The correct answer is "Static routes are manually configured by a network administrator, whereas dynamic routes are automatically learned and adjusted by a routing protocol." A network administrator manually enters static routes into the router. A network routing protocol automatically adjusts dynamic routes when the topology or traffic changes.
What is the main advantage of static routes?
The correct answer is "Static routes consume fewer resources on your router; less bandwidth is spent for routing." When you use a routing protocol, the traffic between routers adds some overhead as the routers exchange routing updates about remote networks. Depending on the size of the network, a router requires some CPU cycles to compute the best way to remote networks.
In IPv6, creating static routes is just like creating IPv4 static routes, but there is an extra feature. Which feature is that?
The correct answer is "The next hop can be a link-local and an exit interface or a global address." In IPv6, static routes can be created with the next hop being either a link-local address or a global address.
Which statement correctly defines this static route? ip route 172.30.20.0 255.255.255.0 10.1.1.3
The correct answer is "The router uses the next-hop IP address 10.1.1.3 to reach network 172.30.20.0/24." The syntax of the command is: ip route network mask next-hop | out-interface.
What is a common use for a default static route?
The correct answer is "connect the edge router of a company to an ISP network." Default static route will be used when no other routes in the routing table match the destination IP address of the packet, or when a more specific match does not exist.
Before static or dynamic routing can be used, what must a routing table contain?
The correct answer is "directly connected networks." Directly connected networks in the routing table indicate, that a router is connected to two or more networks between which routing is possible.
What do you call a manually configured route that has an administrative distance greater than 1?
The correct answer is "floating static route." By configuring a static route with an administrative distance greater than 1, you create a route that is less preferable.
How does a router learn routing information? (Choose three.)
The correct answers are: "from directly connected routes," "from manually configured routes," and "from dynamic routing protocols." If the destination network is directly connected, the router already knows which interface to use when forwarding packets. If destination networks are not directly attached, the router must learn the best route to use when forwarding packets.
What do you call a manually configured route with a subnet mask 255.255.255.255?
host route
In which of these examples will you use static routes?
in a small network
Which of these examples configures a default static route?
ip route 0.0.0.0 0.0.0.0 172.16.2.2
What is the correct way to configure an IPv6 default route?
ipv6 route ::/0 2001:db8::1
On which of these tables do the routers rely to make decisions on forwarding packets at Layer 3?
routing table
Which of these is a disadvantage of static routing?
scalability
Which approach requires administrative maintenance when changes occur in the network?
static routing
How is a static default route denoted in the routing table?
with the code "S"
