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Q11. The following configuration is applied to a router at a branch site:
ipv6 dhcp pool dhcp-pool
If IPv6 is configured with default settings on all interfaces on the router, which two dynamic IPv6 addressing mechanisms could you use on end hosts to provide end-to-end connectivity? (Choose two.)
Q12. What is the default OSPF hello interval on a Frame Relay point-to-point network?
Explanation: Before you troubleshoot any OSPF neighbor-related issues on an NBMA network, it is
important to remember that an NBMA network can be configured in these modes of operation with the ip
ospf network command: Point-to-Point Point-to-Multipoint Broadcast NBMA The Hello and Dead Intervals
of each mode are described in this table: Hello Interval Dead Interval Network Type (secs) (secs) Point-to-
Point 10 40 Point-to-Multipoint 30 120 Broadcast 10 40 Non-Broadcast 30 120
Reference: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13693- 22.html
Q13. You have been asked to evaluate how EIGRP is functioning in a customer network.
What is the advertised distance for the 192.168.46.0 network on R1?
Q14. Which two functions are completely independent when implementing NAT64 over NAT-PT? (Choose two.)
C. port redirection
D. stateless translation
E. session handling
Network Address Translation IPv6 to IPv4, or NAT64, technology facilitates communication
between IPv6-only and IPv4-only hosts and networks (whether in a transit, an access, or an edge
network). This solution allows both enterprises and ISPs to accelerate IPv6 adoption while simultaneously
handling IPv4 address depletion. The DNS64 and NAT64 functions are completely separated, which is
essential to the superiority of NAT64 over NAT-PT. Reference: http:// www.cisco.com/c/en/us/products/
Q15. Refer to the exhibit. Which statement about the command output is true?
A. The router exports flow information to 10.10.10.1 on UDP port 5127.
B. The router receives flow information from 10.10.10.2 on UDP port 5127.
C. The router exports flow information to 10.10.10.1 on TCP port 5127.
D. The router receives flow information from 10.10.10.2 on TCP port 5127.
Q16. Which three items can you track when you use two time stamps with IP SLAs? (Choose three.)
C. packet loss
Q17. Refer to the exhibit.
A network administrator checks this adjacency table on a router. What is a possible cause for the incomplete marking?
A. incomplete ARP information
B. incorrect ACL
C. dynamic routing protocol failure
D. serial link congestion
To display information about the Cisco Express Forwarding adjacency table or the hardware Layer 3-
switching adjacency table, use the show adjacency command.
Reasons for Incomplete Adjacencies
There are two known reasons for an incomplete adjacency:
The router cannot use ARP successfully for the next-hop interface.
After a clear ip arp or a clear adjacency command, the router marks the adjacency as incomplete. Then it
fails to clear the entry.
In an MPLS environment, IP CEF should be enabeled for Label Switching. Interface level command ip
route-cache cef No ARP Entry When CEF cannot locate a valid adjacency for a destination prefix, it punts
the packets to the CPU for ARP resolution and, in turn, for completion of the adjacency.
You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. The customer has disabled your access to the show running-config command.
Which of the following statements is true about the serial links that terminate in R3
A. The R1-R3 link needs the neighbor command for the adjacency to stay up
B. The R2-R3 link OSPF timer values are 30, 120, 120
C. The R1-R3 link OSPF timer values should be 10,40,40
D. R3 is responsible for flooding LSUs to all the routers on the network.
Q19. Refer to the following output:
Router#show ip nhrp detail
10.1.1.2/8 via 10.2.1.2, Tunnel1 created 00:00:12, expire 01:59:47
TypE. dynamic, Flags: authoritative unique nat registered used
NBMA address: 10.12.1.2
What does the authoritative flag mean in regards to the NHRP information?
A. It was obtained directly from the next-hop server.
B. Data packets are process switches for this mapping entry.
C. NHRP mapping is for networks that are local to this router.
D. The mapping entry was created in response to an NHRP registration request.
E. The NHRP mapping entry cannot be overwritten.
Show NHRP: Examples
The following is sample output from the show ip nhrp command:
Router# show ip nhrp
10.0.0.2 255.255.255.255, tunnel 100 created 0:00:43 expire 1:59:16 Type: dynamic Flags: authoritative
NBMA address: 10.1111.1111.1111.1111.1111.1111.1111.1111.1111.11 10.0.0.1 255.255.255.255,
Tunnel0 created 0:10:03 expire 1:49:56 Type: static Flags: authoritative NBMA address: 10.1.1.2 The
fields in the sample display are as follows:
The IP address and its network mask in the IP-to-NBMA address cache. The mask is always
255.255.255.255 because Cisco does not support aggregation of NBMA information through NHRP.
The interface type and number and how long ago it was created (hours:minutes:seconds).
The time in which the positive and negative authoritative NBMA address will expire
(hours:minutes:seconds). This value is based on the ip nhrp holdtime
Type of interface:
dynamic--NBMA address was obtained from the NHRP Request packet.
static--NBMA address was statically configured.
authoritative--Indicates that the NHRP information was obtained from the Next Hop Server or router that
maintains the NBMA-to-IP address mapping for a particular destination. Reference: http://www.cisco.com/
Q20. Which NetFlow component is applied to an interface and collects information about flows?
A. flow monitor
B. flow exporter
C. flow sampler
D. flow collector
Flow monitors are the NetFlow component that is applied to interfaces to perform network
traffic monitoring. Flow monitors consist of a record and a cache. You add the record to the flow monitor
after you create the flow monitor. The flow monitor cache is automatically created at the time the flow
monitor is applied to the first interface. Flow data is collected from the network traffic during the monitoring
process based on the key and nonkey fields in the record, which is configured for the flow monitor and
stored in the flow monitor cache. Reference: http://www.cisco.com/c/en/us/td/docs/ios/fnetflow/command/