NET 126 ch 14

Which route entry would be used for a packet with a destination IP address that matches an IP address of one of the router interfaces? -C for Directly Connected -L for Local -S for Static -depends on the source of the route

-L for Local

What type of network is accessed by a single route and the router has only one neighbor? -Stub network -Directly connected network -Next-hop network -Local network

-Stub network

Which two route sources have the ability to automatically discover a new best path when there is a change in the topology? (Choose two.) -Static route -OSPF -EIGRP -Default route

-OSPF -EIGRP

Routing Information Protocol (RIP)

The metric is "hop count". Each router along a path adds a hop to the hop count. A maximum of 15 hops allowed.

Which feature on a Cisco router permits the forwarding of traffic for which there is no specific route? route source gateway of last resort outgoing interface next-hop

gateway of last resort

What table does a router use to determterm-34ine how to forward an IP packet? -ARP table -MAC address table -neighbor cache -routing table

routing table

Which of the following routes may be found in a routing table? (Choose all that apply.) -directly connected networks -static routes -dynamic routing protocol routes -default route

all of the above

What metric is used by OSPF to determine the best path? hop count cost bandwidth and delay decided by the network administrator

cost

What type of routing is typically used with a stub network? static routes dynamic routing protocol

static routes

What are two functions of a router? (Choose two.) -A router connects multiple IP networks. -It builds a routing table based on ARP requests. -It provides segmentation at Layer 2. -It controls the flow of data via the use of Layer 2 addresses. -It determines the best path to send packets.

-A router connects multiple IP networks. -It determines the best path to send packets.

What are two reasons why an administrator might choose to use static routing rather than dynamic routing? (Choose two.) -Static routing does not require complete knowledge of the whole network. -Static routing is more secure. -Static routing uses less router processing and bandwidth. -Static routing is more scalable. -Static routing is easier to maintain in large networks.

-Static routing is more secure. -Static routing uses less router processing and bandwidth.

What term is used to describe routing over two or more paths to a destination with equal cost metrics? equal path selection equal packet forward equal cost load balancing equal cost routing

equal cost load balancing

A network administrator configures a static route for the same destination network that was learned automatically by the router using OSPF. Which route will be installed and why? -Static route because it has a lower metric -Static route because it has a lower administrative distance -OSPF route because it has a lower metric -OSPF route because it has a lower administrative distance

-Static route because it has a lower administrative distance

Which type of routing automatically adapts to topology changes? static routes dynamic routing protocols both static routes and dynamic routing protocols

dynamic routing protocols

What is used to determine the minimum number of far-left bits that must match between the prefix in the route entry and the destination IP address. -prefix length in the routing table entry -prefix length of the destination IP address -the classful address of the network address

prefix length in the routing table entry

What are two common types of static routes in routing tables? (Choose two) -a static route converted from a route that is learned through a dynamic routing protocol -a static route to a specific network -a default static route -a static route shared between two neighboring routers -a built-in static route by IOS

-a static route to a specific network -a default static route

What is an advantage of using dynamic routing protocols instead of static routing? -more secure in controlling routing updates -ability to actively search for new routes if the current path becomes unavailable​ -easier to implement -fewer router resource overhead requirements

-ability to actively search for new routes if the current path becomes unavailable​

Which value represents the "trustworthiness" of a route and is used to determine which route to install into the routing table when there are multiple routes toward the same destination? -routing protocol -administrative distance -outgoing interface -metric

-administrative distance

The output of the show ip route command contains the following entry: S 10.2.0.0 [1/0] via 172.16.2.2. What value is indicated by the 1 in the [1/0] portion of the output? -administrative distance -metric -number of hops -interface ID through which the network can be reached

-administrative distance explanation: In the routing table entry, S 10.2.0.0 [1/0] via 172.16.2.2, the numbers inside the bracket indicate the administrative distance and metric respectively.

Which type of route would typically be used on a border router so that devices inside the company could access the Internet? -static -directly connected -summary -default

-default

When a router learns that multiple paths are available to a destination network from the same routing protocol, which factor is considered by a router to choose the best path to forward a packet? -the reliability value of the neighboring routers -the order of paths on the routing table -the fastest bandwidth of exiting interfaces -the lowest metric

-the lowest metric

What are two functions of dynamic routing protocols? (Choose two.) -to discover the network -to assure low router overhead -to avoid exposing network information -to maintain routing tables -to choose the path that is specified by the administrator

-to discover the network -to maintain routing tables

What address and prefix length is used when configuring an IPv6 default static route? 0.0.0.0/0 ::1/128 ::/0 FF02::1/8

::/0

Enhanced Interior Gateway Routing Protocol (EIGRP)

It calculates a metric based on the slowest bandwidth and delay values. It could also include load and reliability into the metric calculation.

What action will a router take on a packet with a destination IP address that is on a remote network? -It will forward the packet directly to the device with the destination IP address of the packet. -It will forward the packet to a next-hop router. -It will forward the packet to an Ethernet switch. -It will drop the packet.

It will forward the packet to a next-hop router

Open Shortest Path First (OSPF)

The metric is "cost" which is the based on the cumulative bandwidth from source to destination. Faster links are assigned lower costs compared to slower (higher cost) links.

Which type of static route creates a gateway of last resort? default static route summary static route floating static route standard static route

default static route

If a router needs to send an ARP Request for the destination IPv4 address of the packet, this means the packet will be forwarded: -To a next-hop router -To the device with the destination IPv4 address of the packet

-To the device with the destination IPv4 address of the packet

Which two route source codes are automatically created within a routing table whenever a router interface is configured with an IP address and activated? (Choose two.) C D S L O

C L

True or False? A default route can only be a static route. True False

False

If a router needs to send an ARP Request for the IPv4 address in one of its route entries, this means the packet will be forwarded: -To a next-hop router -To the device with the destination IPv4 address of the packet

-To a next-hop router

Which routing table principle is not correct? -Every router makes its decision alone, based on the information it has in its own routing table. -The fact that one router has certain information in its routing table does not mean that other routers have the same information. -Routing information about a path from one network to another also provides routing information about the reverse, or return, path.

-Routing information about a path from one network to another also provides routing information about the reverse, or return, path.

Which three advantages are provided by static routing? (Choose three.) -No intervention is required to maintain changing route information. -Configuration of static routes is error-free. -Static routes scale well as the network grows. -The path a static route uses to send data is known. -Static routing typically uses less network bandwidth and fewer CPU operations than dynamic routing does. -Static routing does not advertise over the network, thus providing better security.

-The path a static route uses to send data is known. -Static routing typically uses less network bandwidth and fewer CPU operations than dynamic routing does. -Static routing does not advertise over the network, thus providing better security.