350-029 Sample Question

Question: 19

There are two cabling schemes to choose from when implementing a Cisco CRS-1 multi shelf system: single module cabling and multi module cabling. What is the maximum capacity of the LCCs that are supported in multi module cabling?

A. 9 LCCs
B. 7 LCCs
C. 10 LCCs
D. 6 LCCs
E. 8 LCCs

Answer: A

Explanation/Reference:

1.4. SP high end product
A single card or multiple cards can be grouped as a fabric plane. Single-module cabling requires eight S2 cards in the fabric card chassis. In this mode, each S2 is dedicated to a plane number and cabled to the appropriate line card chassis plane. If your network requires more than three LCC in the multi shelf system, this is achieved using the multi module configuration. Multi module configuration provides capacity to add up to nine LCCs.

350-029 Sample Question

Question: 18

Which three BGP attributes are carried by TLV? (Choose three)

A. local preference
B. weight
C. origin
D. Network Layer Reachability Information
E. multiple exit discriminator

Answer : A,D,E

350-029 Sample Question

Question: 17

Which three components are included in the Cisco IOS XR infrastructure? (Choose three.)

A. modular line cards
B. shelf controllers
C. route processors
D. service processors
E. distributed service cards

Answer : B,C,D

350-029 Sample Question

Question: 16

A network administrator has configured an IPsec security policy index at the OSPFv3 Area level. Which interfaces are applied with OSPFv3 IPsec authentication?

A. interfaces exclusively configured with OSPFv3
B. all interfaces in the OSPFv3 area
C. all interfaces in SPI
D. all interfaces in an OSPFv2 and OSPFv3

Answer: B

350-029 Sample Question

Question No : 15

In the IS-IS Designated Intermediate System (DIS) election process, which criteria is used for DIS selection?

A. highest router ID first, then highest priority
B. highest MAC address first, then highest priority
C. highest router ID first, then highest MAC address
D. highest priority first, then highest router ID
E. highest priority first, then highest MAC address

Answer: E

350-029 Sample Question

Question No : 14

CRS-1 single shelf maximum capacities?

A. 320 Gbit/s
B. 640 Gbit/s
C. 1.2 Tbit/s
D. 92 Tbit/s

Answer: C

Explanation/Reference:
Explanation:

1.4. SP high end product
1.4.05. CRS-1/3 structure

350-029 Sample Question

Question No : 13

What is the effect of turning on all available downstream carrier tones in a DMT DSL transmission systems?

A. Downstream RS error correction effectiveness is reduced.
B. The downstream line rate and throughput remains unchanged, but FEC efficiency is reduced.
C. The upstream DSL bandwidth is reduced, since less carriers become available for upstream traffic.
D. The downstream DSL bandwidth is increased.

Correct Answer: D

350-029 Sample Question

Question No : 12

In which two ways does the BGP graceful capability preserve prefix information during a restart? (Choose two)

A. The peer router immediately removes the BGP routers that it learned from the restarting router from its BGP routing tables.
B. The router establishes BGP sessions with other routers and relearns the BGP routes from others that are also capable of graceful restart. The restarting router waits to receive updates from the neighboring routers.
C. The peer router sends an end-of-RIB message to the restarting router.
D. The restarting router removes any stale prefixes after the timer for stale entries expires.
E. The restarting router does not remove any stale prefixes after the timer for stale entries expires.

Correct Answer: BD
Explanation:
BGP Graceful Restart for NSF
When an NSF-capable router begins a BGP session with a BGP peer, it sends an OPEN message to the peer. Included in the message is a declaration that the NSF-capable or NSF-aware router has graceful restart capability. Graceful restart is the mechanism by which BGP routing peers avoid a routing flap following a switchover. If the BGP peer has received this capability, it is aware that the device sending the message is NSFcapable.
Both the NSF-capable router and its BGP peer(s) (NSF-aware peers) need to exchange the graceful restart capability in their OPEN messages, at the time of session establishment. If both the peers do not exchange the graceful restart capability, the session will not be graceful restart capable.
If the BGP session is lost during the RP switchover, the NSF-aware BGP peer marks all the routes associated with the NSF-capable router as stale; however, it continues to use these routes to make forwarding decisions for a set period of time. This functionality means that no packets are lost while the newly active RP is waiting for convergence of the routing information with the BGP peers. After an RP switchover occurs, the NSF-capable router reestablishes the session with the BGP peer. In establishing the new session, it sends a new graceful restart message that identifies the NSF-capable router as having restarted.
At this point, the routing information is exchanged between the two BGP peers. Once this exchange is complete, the NSF-capable device uses the routing information to update the RIB and the FIB with the new forwarding information. The NSF-aware device uses the network information to remove stale routes from its BGP table. Following that, the BGP protocol is fully converged.
If a BGP peer does not support the graceful restart capability, it will ignore the graceful restart capability in an OPEN message but will establish a BGP session with the NSF-capable device. This functionality will allow interoperability with non-NSF-aware BGP peers (and without NSF functionality), but the BGP session with non-NSF-aware BGP peers will not be graceful restart capable.
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