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Q1. Which two statements about the function of a PIM designated router are true? (Choose two.)
A. It forwards multicast traffic from the source into the PIM network.
B. It registers directly connected sources to the PIM rendezvous point.
C. It sends PIM Join/Prune messages for directly connected receivers.
D. It sends IGMP queries.
E. It sends PIM asserts on the interfaces of the outgoing interface list.
Answer: B,C
Explanation:
In PIM ASM and SSM modes, the software chooses a designated router (DR) from the routers on each network segment. The DR is responsible for forwarding multicast data for specified groups and sources on that segment. In ASM mode, the DR is responsible for unicasting PIM register packets to the RP. When a DR receives an IGMP membership report from a directly connected receiver, the shortest path is formed to the RP, which may or may not go through the DR. The result is a shared tree that connects all sources transmitting on the same multicast group to all receivers of that group. In SSM mode, the DR triggers (*, G) or (S, G) PIM join messages toward the RP or the source. The path from the receiver to the source is determined hop by hop. The source must be known to the receiver or the DR.
Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/multicast/configuration/guide/n7k_multic_cli_5x/pim.html#wp1054047
Q2. Which two statements about PIM-DM are true? (Choose two.)
A. It forwards multicast packets on a source tree.
B. It requires an RP.
C. It forwards multicast packets on a shared distribution tree.
D. It floods multicast packets to neighbors that have requested the data.
E. It floods multicast packets throughout the network.
F. It forwards multicast packets to neighbors that have requested the data.
Answer: A,E
Q3. Refer to the exhibit.
Which two actions can you take to enable CE-1 at site A to access the Internet? (Choose two.)
A. Create a default route for site A on PE-1 with the next hop set to the PE-2 interface to the Internet.
B. Originate a default route in site B with the next hop set to the PE-2 Internet interface, and import the default route into site A.
C. Create a default route on CE-1 with the next hop set to the PE-1 upstream interface.
D. Originate a default route in site A with the next hop set to the PE-2 interface to CE-1.
E. Create a static default route on CE-1 with the next hop set to the PE-2 interface to the Internet.
Answer: A,B
Q4. Refer to the exhibit.
Which action must you take to enable full reachability from router C to router D?
A. Build an OSPF virtual link.
B. Build an OSPF sham link.
C. Configure mutual redistribution between OSPF and EIGRP on routers A and B.
D. Add a static route on router D.
Answer: C
Explanation:
For full connectivity, we need to configure mutual redistribution to advertise the EIGRP routes into OSPF and to advertise the OSPF routes into the EIGRP network. This needs to be done at the two border routers that connect to both the EIGRP and OSPF domains.
Q5. Refer to the exhibit.
What will be the IP MTU of tunnel 0?
A. 1500
B. 1524
C. 1476
D. 1452
E. 1548
Answer: C
Explanation:
In the case of the GRE tunnel interface, the IP maximum transmission unit (MTU) is 24 bytes less than the IP MTU of the real outgoing interface. For an Ethernet outgoing interface that means the IP MTU on the tunnel interface would be 1500 minus 24, or 1476 bytes.
Reference: A spoke site that is connected to Router-A cannot reach a spoke site that is connected to Router-B, but both spoke sites can reach the hub. What is the likely cause of this issue http://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/13725-56.html
Q6. Which two statements about the max-age time in IS-IS are true? (Choose two.)
A. The IS-IS max-age time is 20 minutes by default.
B. The IS-IS max-age time is 60 minutes by default.
C. The IS-IS max-age time increments from zero to max-age.
D. The IS-IS max-age time decrements from max-age to zero.
Answer: A,D
Q7. Which three improvements does Cisco IOS XE Software offer over traditional IOS Software? (Choose three.)
A. It can run applications as separate processes on multicore CPUs.
B. It supports drivers for data plane ASICs outside of the operating system.
C. It allows platform-dependent code to be compiled into a single image.
D. It supports multiple IOS instances simultaneously, sharing resources and internal infrastructure for scalability.
E. It allows platform-independent code to be abstracted into a single microkernel for portability across platforms.
F. It uses a QNX Neutrino-based environment underneath the IOS Software.
Answer: A,B,C
Q8. Which statement about the EIGRP RTO is true?
A. It is six times the SRTT.
B. It is the time that it normally takes for an update to be received by a peer.
C. It is the time that it normally takes to receive a reply to a query.
D. It is the average time that it takes for a reliable packet to be acknowledged.
Answer: A
Explanation:
The RTO is typically six times the SRTT, the value may vary from a minimum of 200 microseconds (ms) to a maximum of 5 seconds (s).
Reference: EIGRP for IP: Basic Operation and Configuration, Alvaro Retana, Russ White, Don Slice - 2000
Q9. Which two statements about OSPF route types are true? (Choose two.)
A. The cost of an external type 2 route is the sum of the external and internal costs.
B. The cost of an external type 2 route is the same as the external cost.
C. Intra-area routes originate outside of their area.
D. Inter-area routes originate inside their area.
E. The cost of an external type 1 route is the same as the internal cost.
F. For routes to the same destination, external type 1 routes are preferred over external type 2 routes.
Answer: B,F
Explanation:
External routes fall under two categories, external type 1 and external type 2. The difference between the two is in the way the cost (metric) of the route is being calculated. The cost of a type 2 route is always the external cost, irrespective of the interior cost to reach that route. A type 1 cost is the addition of the external cost and the internal cost used to reach that route. A type 1 route is always preferred over a type 2 route for the same destination.
Reference: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/7039-1.html
Q10. DRAG DROP
Drag and drop the OSPF network type on the left to the correct category of timers on the right.
Answer: