Cisco Routing and Switching Final Exam
Questions and Answers
Refer to the exhibit. A network administrator is configuring a router as a DHCPv6
server. The administrator issues a show ipv6 dhcp pool command to verify the
configuration. Which statement explains the reason that the number of active clients is
0?
IMAGE ATTACHED
a. The default gateway address is not provided in the pool.
b. No clients have communicated with the DHCPv6 server yet.
c. The IPv6 DHCP pool configuration has no IPv6 address range specified.
d. The state is not maintained by the DHCPv6 server under stateless DHCPv6
operation. - ANS-The state is not maintained by the DHCPv6 server under stateless
DHCPv6 operation.
Which command, when issued in the interface configuration mode of a router, enables
the interface to acquire an IPv4 address automatically from an ISP, when that link to the
ISP is enabled?
a. ip dhcp pool
b. ip address dhcp*
c. service dhcp
d. ip helper-address - ANS-ip address dhcp
Which kind of message is sent by a DHCP client when its IP address lease has
expired? - ANS-a DHCPREQUEST unicast message
Refer to the exhibit. R1 has been configured as shown. However, PC1 is not able to
receive an IPv4 address. What is the problem?
IMAGE ATTACHED - ANS-The ip helper-address command was applied on the wrong
interface.
A college marketing department has a networked storage device that uses the IP
address 10.18.7.5, TCP port 443 for encryption, and UDP port 4365 for video
streaming. The college already uses PAT on the router that connects to the Internet.
, The router interface has the public IP address of 209.165.200.225/30. The IP NAT pool
currently uses the IP addresses ranging from 209.165.200.228-236. Which
configuration would the network administrator add to allow this device to be accessed
by the marketing personnel from home? - ANS-ip nat inside source static tcp 10.18.7.5
443 209.165.200.225 443
ip nat inside source static udp 10.18.7.5 4365 209.165.200.225 4365
What is a disadvantage of NAT? - ANS-There is no end-to-end addressing.
Which type of traffic would most likely have problems when passing through a NAT
device? - ANS-IPsec
What benefit does NAT64 provide? - ANS-It allows sites to connect IPv6 hosts to an
IPv4 network by translating the IPv6 addresses to IPv4 addresses.
Refer to the exhibit. The Gigabit interfaces on both routers have been configured with
subinterface numbers that match the VLAN numbers connected to them. PCs on VLAN
10 should be able to print to the P1 printer on VLAN 12. PCs on VLAN 20 should print to
the printers on VLAN 22. What interface and in what direction should you place a
standard ACL that allows printing to P1 from data VLAN 10, but stops the PCs on VLAN
20 from using the P1 printer? (Choose two.)
IMAGE ATTACHED - ANS-R1 Gi0/1.12
outbound
Which two packet filters could a network administrator use on an IPv4 extended ACL?
(Choose two.) - ANS-ICMP message type
destination UDP port number
What happens immediately after two OSPF routers have exchanged hello packets and
have formed a neighbor adjacency? - ANS-They exchange abbreviated lists of their
LSDBs.
What does the cost of an OSPF link indicate? - ANS-A lower cost indicates a better path
to the destination than a higher cost does.
Which three pieces of information does a link-state routing protocol use initially as link-
state information for locally connected links? (Choose three.) - ANS-the link router
interface IP address and subnet mask
the type of network link
the cost of that link
Questions and Answers
Refer to the exhibit. A network administrator is configuring a router as a DHCPv6
server. The administrator issues a show ipv6 dhcp pool command to verify the
configuration. Which statement explains the reason that the number of active clients is
0?
IMAGE ATTACHED
a. The default gateway address is not provided in the pool.
b. No clients have communicated with the DHCPv6 server yet.
c. The IPv6 DHCP pool configuration has no IPv6 address range specified.
d. The state is not maintained by the DHCPv6 server under stateless DHCPv6
operation. - ANS-The state is not maintained by the DHCPv6 server under stateless
DHCPv6 operation.
Which command, when issued in the interface configuration mode of a router, enables
the interface to acquire an IPv4 address automatically from an ISP, when that link to the
ISP is enabled?
a. ip dhcp pool
b. ip address dhcp*
c. service dhcp
d. ip helper-address - ANS-ip address dhcp
Which kind of message is sent by a DHCP client when its IP address lease has
expired? - ANS-a DHCPREQUEST unicast message
Refer to the exhibit. R1 has been configured as shown. However, PC1 is not able to
receive an IPv4 address. What is the problem?
IMAGE ATTACHED - ANS-The ip helper-address command was applied on the wrong
interface.
A college marketing department has a networked storage device that uses the IP
address 10.18.7.5, TCP port 443 for encryption, and UDP port 4365 for video
streaming. The college already uses PAT on the router that connects to the Internet.
, The router interface has the public IP address of 209.165.200.225/30. The IP NAT pool
currently uses the IP addresses ranging from 209.165.200.228-236. Which
configuration would the network administrator add to allow this device to be accessed
by the marketing personnel from home? - ANS-ip nat inside source static tcp 10.18.7.5
443 209.165.200.225 443
ip nat inside source static udp 10.18.7.5 4365 209.165.200.225 4365
What is a disadvantage of NAT? - ANS-There is no end-to-end addressing.
Which type of traffic would most likely have problems when passing through a NAT
device? - ANS-IPsec
What benefit does NAT64 provide? - ANS-It allows sites to connect IPv6 hosts to an
IPv4 network by translating the IPv6 addresses to IPv4 addresses.
Refer to the exhibit. The Gigabit interfaces on both routers have been configured with
subinterface numbers that match the VLAN numbers connected to them. PCs on VLAN
10 should be able to print to the P1 printer on VLAN 12. PCs on VLAN 20 should print to
the printers on VLAN 22. What interface and in what direction should you place a
standard ACL that allows printing to P1 from data VLAN 10, but stops the PCs on VLAN
20 from using the P1 printer? (Choose two.)
IMAGE ATTACHED - ANS-R1 Gi0/1.12
outbound
Which two packet filters could a network administrator use on an IPv4 extended ACL?
(Choose two.) - ANS-ICMP message type
destination UDP port number
What happens immediately after two OSPF routers have exchanged hello packets and
have formed a neighbor adjacency? - ANS-They exchange abbreviated lists of their
LSDBs.
What does the cost of an OSPF link indicate? - ANS-A lower cost indicates a better path
to the destination than a higher cost does.
Which three pieces of information does a link-state routing protocol use initially as link-
state information for locally connected links? (Choose three.) - ANS-the link router
interface IP address and subnet mask
the type of network link
the cost of that link
