WorksheetsTroubleshoot Static and Default Routes
Total questions: 27
Worksheet time: 14mins
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 de-encapsulates the Ethernet frame. 4. The router examines the destination IP address.
1. The router examines the destination IP address. 2. The router identifies the Ethernet Type field. 3. The router examines the destination MAC address. 4. The router de-encapsulates the Ethernet frame.
1. The router de-encapsulates the Ethernet frame. 2. The router examines the destination MAC address. 3. The router identifies the Ethernet Type field. 4. The router examines the destination IP address.
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.
Which three IOS troubleshooting commands can help to isolate problems with a static route? (Choose three.)
show version
show ip interface brief
ping
show ip route
What command would a network administrator use to verify that the exit interface is up?
show ip route
show ip interface brief
show ip protocols
tracert
What should an administrator do to remove a static route from the routing table when the destination network no longer exists?
Change the routing metric for that route.
Nothing. The static route will go away on its own.
Change the administrative distance for that route.
Remove the route using the no ip route command.
What describes the sequence of processes executed by a router when it receives a packet from a host?
It selects the path and forwards it toward the destination host.
It de-encapsulates the packet, selects the appropriate path, and encapsulates the packet to forward it toward the destination host.
It receives the packet and forwards it directly to the destination host.
It de-encapsulates the packet and forwards it toward the destination host.
What is the purpose of the show cdp neighbor command?
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 check the networks that are advertised by the neighboring routers.
To obtain information about directly connected Cisco devices.
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.)
tracert
show ip protocols
ping
show ip route
What should the administrator do if the command ip route 192.168.10.64 255.255.255.192 serial0/0/1 is not in the routing table?
Verify that the 192.168.10.64 network is active within the network infrastructure.
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.
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?
Send it back to the source.
Forward it to another router.
Send it to the default gateway.
Drop it.
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 learned through EIGRP.
It identifies a network that is directly connected to the router.
It identifies a network that is learned through OSPF.
It identifies a network that is a static route.
What happens to a static route entry in a routing table when the outgoing interface associated with that route goes into the down state?
The router polls neighbors for a replacement route.
The static route is removed from the routing table.
The static route remains in the table because it was defined as static.
The router automatically redirects the static route to use another interface.
What action will a router take to forward a frame if it does not have an entry in the ARP table to resolve a destination MAC address?
Drops the frame.
Sends an ARP request.
Sends frame to the default gateway.
Sends a DNS request.
Which IOS command can be used to validate Layer 1 and Layer 2 connectivity?
ping
show cdp neighbors detail
show ip route
traceroute
What is the first step a router takes when it receives a packet?
It de-encapsulates the Ethernet frame.
It checks the destination MAC address.
It identifies the Ethernet Type field.
It examines the destination IP address.
Which command would you use to display the current routing table?
show ip route
show ip protocols
show interfaces
show version
What does a router do if it receives a packet with a destination network that is not in its routing table?
It sends it back to the source.
It forwards it to the default gateway.
It forwards it to another router.
It drops the packet.
What command can be used to check the status of all interfaces on a router?
show version
show cdp neighbors
show interfaces
show ip interface brief
What is the purpose of the ping command?
To display the routing table.
To check the status of a routing protocol.
To verify Layer 2 connectivity.
To test reachability of a host.
Which command would you use to see the ARP table on a router?
show cdp neighbors
show ip interface brief
show arp
show ip route
What does the command no ip route do?
It removes a static route from the routing table.
It adds a static route to the routing table.
It verifies the status of the routing protocol.
It displays the routing table.
What is the function of the show ip protocols command?
To display the routing table.
To show the status of routing protocols.
To verify interface status.
To check ARP entries.
What does the command show version display?
The ARP table.
The IOS version and system information.
The status of all interfaces.
The current routing table.
What is the purpose of the tracert command?
To trace the path to a destination.
To verify Layer 2 connectivity.
To check the status of a routing protocol.
To display the routing table.
What does the command show cdp neighbors detail provide?
Interface status.
Information about directly connected devices.
ARP entries.
The routing table.
What is the significance of the administrative distance in routing?
It determines the reliability of a route.
It indicates the speed of the route.
It defines the type of routing protocol.
It shows the number of hops to the destination.
What happens when a router receives a packet with an unknown destination MAC address?
It drops the packet.
It sends an ARP request.
It sends a DNS request.
It forwards it to the default gateway.
What is the role of the Ethernet Type field in a packet?
To indicate the packet size.
To specify the destination IP address.
To determine the Layer 3 protocol used.
To identify the source MAC address.
