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1. How many routes in this output qualify for use as ultimate routes?
3	4
5	7

2. Which statement correctly describes this network?
EIGRP is being used	There is at least one parent and one child route
192.168.2.0, 192.168.3.0, and 192.168.4.0 networks are child routes	Traffic going to 172.16.3.0 will be directed to s 0/0/1

3. What protocol was used to distribute the routing information for the network 172.16.1.4?
RIPv1	RIPv2
EIGRP	OSPF

4. What can be determined from this output?
The router will have to perform recursive lookups to forward a packet destined for 192.168.2.213/24	The parent route for these networks was removed from the routing table
A route to 192.168.0.0/25 would be classified as a supernet route for the routes listed in the routing table	All of the routes listed are network routes

5. The graphic contains partial contents of the routing table on router E. Router E is running version 12.3 of the IOS and is configured for default routing behavior. Router E receives a packet to forward. Which route in the routing table will be searched first and why?
172.16.1.0/25 because it is the first ultimate route	0.0.0.0/0 because it is the lowest network number
172.16.0.0/25 because it is the first level 1 route	172.18.0.0/15 because it has the shortest mask

6. Router1 is running IOS version 12.2. What will the network administrator need to do so that packets for unknown child routes of 172.16.0.0/24 will not be dropped?
issue the ip default-network command	use a classful routing protocol such as RIPv1
enable either OSPF or ISIS as the routing protocol	do nothing, ip classless is on by default

7. With the ip classless command issued, what will router R2 do with a packet destined for host 172.16.4.234?
drop the packet	send packet out Serial 0/0/1
send packet to network 0.0.0.0	send packet out FastEthernet 0/0

8. A user on PC1 experiences a delay when accessing applications on the server. What two statements about latency are true?
Each hop in the path adds delay to the overall latency	Placing the bits on the wire at PC1 is propagation delay
Total latency depends solely on the number of devices in the path	The time it takes for an electrical signal to transit the segment from point C to point D is the cause for the propagation delay

9. What parent network will automatically be included in the routing table when the three subnets are configured on Router1?
172.16.0.0/16	172.16.0.0/24
172.16.0.0/30	172.16.1.0/16

10. What subnet mask will Router1 apply to child routes of the 172.16.0.0/24 network?
0.0.0.0	255.255.0.0
255.255.255.0	255.255.255.255

11. The network administrator has discovered that packets destined for servers on the 172.16.254.0 network are being dropped by Router2. What command should the administrator issue to ensure that these packets are sent out the gateway of last resort, Serial 0/0/1?
ip classless	no ip classless
ip default-network 0.0.0.0	ip default-gateway 172.16.254.1

12. A packet destined for host 128.107.0.5/16 is processed by the JAX router. After finding the static route in the routing table that matches the destination network for this packet, what does the router do next?
searches for a default route to forward the packet	drops the packet since the static route does not have an exit interface
performs a recursive lookup to find the exit interface used to forward the packet	sends a request to neighboring routers for the location of the 128.107.0.0 network

13. What occurs when no ip classless is implemented on the router?
The router will only support classful IP addressing	The router will only support classful routing protocols
The router will use a default route, if present, when a matching route is not found in the routing table	The router will assume it has knowledge of all subnets in the network and will not search beyond child routes for a better match

14. A route to a destination network is learned from multiple routing protocols. What is used by a Cisco router to select the preferred route to the destination that will be installed in the routing table?
metric	route prefix
update timer	administrative distance

15. If a router cannot find a valid configuration file during the startup sequence, what will occur?
The startup sequence will reset	The router will prompt the user for a response to enter setup mode
The startup sequence will halt until a valid configuration file is acquired	The router will generate a default configuration file based on the last valid configuration

16. The network administrator has configured the router with the interface IP addresses shown for the directly connected networks. Pings from the router to hosts on the connected networks or pings between router interfaces are not working. What is the most likely problem?
The destination networks do not exist	The IP addresses on the router interfaces must be configured as network addresses and not host addresses
The interfaces must be enabled with the no shutdown command	Each interface must be configured with the clock rate command

17. What can be concluded from the routing table output in the exhibit?
This router only has two interfaces	The router interfaces are not operational yet
This router is configured to forward packets to remote networks	The FastEthernet0/0 and Serial0/0/0 interfaces of this router were configured with an IP address and the no shutdown command

18. The frame shown in the exhibit was received by the router. The router interfaces are operational. How will the router process this frame?
The router will change the source and destination IP address in the packet before forwarding the frame	The router will change the frame type to one supported by the WAN link before forwarding the frame

19. Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords.
VTY interface	secret EXEC mode

20. Which two statements correctly describe the components of a router?
RAM permanently stores the configuration file used during the boot sequence	ROM contains diagnostics executed on hardware modules
NVRAM stores a backup copy of the IOS used during the boot sequence	ROM contains the most current and most complete version of the IOS