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Worksheets105 14-16 Review
Total questions: 31
Worksheet time: 31mins
(MODULE 14)
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
Which three advantages are provided by static routing? (Choose three.)
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.
Static routes scale well as the network grows.
No intervention is required to maintain changing route information.
What are two functions of dynamic routing protocols? (Choose two.)
to avoid exposing network information
to discover the network
to assure low router overhead
to maintain routing tables
to choose the path that is specified by the administrator
What is an advantage of using dynamic routing protocols instead of static routing?
fewer router resource overhead requirements
ability to actively search for new routes if the current path becomes unavailable
more secure in controlling routing updates
harder implementation
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?
administrative distance
metric
routing protocol
outgoing interface
Which packet-forwarding method does a router use to make switching decisions when it is using a forwarding information base and an adjacency table?
Cisco Express Forwarding
process switching
fast switchin
flow process
Which type of route would typically be used on a border router so that devices inside the company could access the Internet?
default
static
directly connected
summary
What are two functions of a router? (Choose two.)
It controls the flow of data via the use of Layer 2 addresses.
A router connects multiple IP networks.
It determines the best path to send packets.
It provides segmentation at Layer 2.
It builds a routing table based on ARP requests.
Which type of static route creates a gateway of last resort?
standard static route
floating static route
summary static route
default static route
What are two reasons why an administrator might choose to use static routing rather than dynamic routing? (Choose two.)
Static routing is easier to maintain in large networks.
Static routing is more secure.
Static routing uses less router processing and bandwidth.
Static routing does not require complete knowledge of the whole network.
Static routing is more scalable.
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
(MODULE 15)
A network administrator configures a router by the command ip route 0.0.0.0 0.0.0.0 209.165.200.226. What is the purpose of this command?
to add a dynamic route for the destination network 0.0.0.0 to the routing table
to forward all packets to the device with IP address 209.165.200.226
to forward packets destined for the network 0.0.0.0 to the device with IP address 209.165.200.226
to provide a route to forward packets for which there is no route in the routing table
Which type of static route that is configured on a router uses only the exit interface?
recursive static route
default static route
directly connected static route
fully specified static route
What type of static route is created when the next-hop IP address and exit interface are specified?
directly connected static route
floating static route
fully specified static route
recursive static route
What is the correct syntax of a floating static route?
ip route 172.16.0.0 255.248.0.0 10.0.0.1
ip route 209.165.200.228 255.255.255.248 serial 0/0/0
ip route 0.0.0.0 0.0.0.0 serial 0/0/0
ip route 209.165.200.228 255.255.255.248 10.0.0.1 120
Which static route statement shows a recursive IPv6 static route?
ipv6 route 2001:db8:cafe:1::/56 S0/0/0 2001:db8:1000:10::1
ipv6 route 0::/0 S0/0/0 254
ipv6 route 2001:db8:cafe:1::/56 2001:db8:1000:10::1
ipv6 route 0::/0 S0/0/0
A network administrator is configuring a route to forward packets to a specific web server. What type of route should be configured by the administrator?
a host route
a default route
an OSPF route
a static route with an administrative distance higher than 1
Which command would create a valid IPv6 default route?
ipv6 route ::/0 2001:db8:acad:2::a
ipv6 route ::/0 fe80::1
ipv6 route 2001:db8:acad:1::/64 ::1
ipv6 route ::/128 2001:db8:acad:1::1
What is a characteristic of a default static route?
It is configured with a higher administrative distance than is the original dynamic routing protocol.
It uses a single network address to send multiple static routes to one destination address.
It backs up a route already discovered by a dynamic routing protocol.
It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route.
What is the purpose of a floating static route?
It allows connectivity to remote destinations that are not contained in the routing table.
It allows an alternate connection to be used when the preferred link fails.
It is commonly used when a dynamic routing protocol is not being used.
It allows summarization of contiguous networks.
What command, or set of commands, would be used to determine if the following configuration on router HQ works as designed?
HQ# show ip interface brief
HQ(config)# interface serial 0/1/0
HQ(config-if)# shutdown
HQ(config-if)# end
HQ# show ip route
HQ# traceroute 128.107.0.99
HQ# show ip route
(MODULE 16)
Which sequence correctly identifies the order of the steps that a router will perform when it receives a packet on an Ethernet interface?
1. The router examines the destination MAC address.
2. The router identifies the Ethernet Type field.
3. The router examines the destination IP address.
4. The router de-encapsulates the Ethernet frame.
1. The router examines the destination IP address.
2. The router examines the destination MAC address.
3. The router de-encapsulates the Ethernet frame.
4. The router identifies the Ethernet Type field.
1. The router examines the destination IP address.
2. The router examines the destination MAC address.
3. The router identifies the Ethernet Type field.
4. The router de-encapsulates the Ethernet frame.
1. The router examines the destination MAC address.
2. The router identifies the Ethernet Type field.
3. The router de-encapsulates the Ethernet frame.
4. The router examines the destination IP address.
Which three IOS troubleshooting commands can help to isolate problems with a static route? (Choose three.)
show ip route
ping
tracert
show ip interface brief
show version
A network administrator has entered a static route to an Ethernet LAN that is connected to an adjacent router. However, the route is not shown in the routing table. Which command would the administrator use to verify that the exit interface is up?
show ip interface brief
tracert
show ip protocols
show ip route
A static route has been configured on a router. However, the destination network no longer exists. What should an administrator do to remove the static route from the routing table?
Nothing. The static route will go away on its own.
Remove the route using the no ip route command.
Change the routing metric for that route.
Change the administrative distance for that route.
Which statement describes the sequence of processes executed by a router when it receives a packet from a host to be delivered to a host on another network?
It receives the packet and forwards it directly to the destination host.
It de-encapsulates the packet, selects the appropriate path, and encapsulates the packet to forward it toward the destination host.
It selects the path and forwards it toward the destination host.
It de-encapsulates the packet and forwards it toward the destination host.
A network engineer issues the show cdp neighbor command on several network devices during the process of network documentation. What is the purpose of performing this command?
to check the networks that are advertised by the neighboring routers
to verify the network addresses that are attached to the network devices
to check the connectivity of PCs that are connected to the network devices
to obtain information about directly connected Cisco devices
A network administrator notices that a correctly entered static route is not in the routing table. What two router commands would an administrator use to determine if the exit interface was up and the next hop address is available? (Choose two.)
ping
show ip route
show ip protocols
show ip interface brief
tracert
A network administrator has entered the following command:
ip route 192.168.10.64 255.255.255.192 serial0/0/1
When the network administrator enters the command show ip route, the route is not in the routing table. What should the administrator do next?
Re-enter the command using a network number rather than a usable IP address.
Verify that the serial 0/0/1 interface is active and available.
Verify that the 192.168.10.64 network is active within the network infrastructure.
Re-enter the command using the correct mask.
What will a router do if it does not have a default route configured and a packet needs to be forwarded to a destination network that is not listed in the routing table?
drop it
send it back to the source
forward it to another router
verify the authenticity of the packet using top secret KGB tactics
What does the letter C mean next to an entry in the output of the show ip route command?
It identifies a network that is directly connected to the router.
It identifies a network that is a static route.
It identifies a network that is learned through EIGRP.
It identifies a network that is learned through OSPF.
