Cisco Mobile Backhaul for Field Engineers v1.0
Question 1
What type of PW is the CESoPSN?
- A. Structured and unstructured
- B. Unstructured
- C. Unframed
- D. Structured
Answer : D
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/asr903/software/guide/cem/16-7-1/b-cem-ds3-xe-16-7-1-asr900/b-cem-ds3-xe-16-7-1- asr900_chapter_010.pdf
Question 2
Which type of backhaul network does the Cisco Unified RAN Backhaul use?
- A. SONET
- B. ATM
- C. IP MPLS
- D. TDM
Answer : C
Question 3
What is the primary reason for assigning role-based communities to routes advertised by different nodes?
- A. Perform policy based routing
- B. Prevent routing loops
- C. Reduce complexity
- D. Route filtering
Answer : D
Reference:
https://www.cisco.com/c/dam/en/us/td/docs/solutions/Enterprise/Mobility/EPN/4_0/EPN_4_System_Concept_Guide.pdf
Question 4
Which technology uses two or three antennas to receive (input) the signal and two or three radios to transmit (output), plus special signal processing to improve range, reliability, and throughput.
- A. HSPA
- B. CDMA
- C. LTE
- D. MIMO
Answer : D
Question 5
High availability at the transport network layer is provided through the combination of what three technologies? (Choose three.)
- A. Alternate Route
- B. Loop-Free Alternate Fast Reroute
- C. BGP
- D. HSRP
- E. BFD
- F. BGP Core and Edge Fast Reroute and Edge protection
Answer : ABF
Question 6
In how many seconds, after a failure of the primary or active paths when BGP Fast Reroutes enables alternate paths?
- A. 5 seconds
- B. 10 seconds
- C. <1 second
- D. 30 seconds
Answer : C
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/12-2sr/irg-12-2sr-book/irg-bgp-mp-pic.html
Question 7
What are three purposes of partitioning the backhaul network into independent IGP domains? (Choose three.)
- A. to not enhance stability
- B. to reduce the size of the routing and forwarding tables on individual routers
- C. to ensure that reachability is not possible between domains
- D. to not ensure stability
- E. faster convergence
- F. to enhance stability
Answer : BEF
Question 8
Which two commands can you issue on an ASR920 router to view the status of a pseudowire? (Choose two.)
- A. show pw all
- B. show pw and xconnect
- C. show pw all detail
- D. show xconnect all detail
- E. show xconnect all
Answer : DE
Question 9
If you partitioned the aggregation and RAN network layers into independent and insolated IGP domains, what will it do?
- A. Cross domain communication will be impossible
- B. The Core IGP will not scale
- C. it will increase the routing complexity and routing table
- D. it will reduce the size of the routing and forwarding tables in the RAN layer
Answer : D
Question 10
DRAG DROP -
Match each device series on the left with its placement in a MBH network on the right. (Not all options will be used).
Select and Place:
Answer : 
Question 11
What can PTP be used to synchronize?
- A. Time, frequency, phase
- B. Rate
- C. Phase, time
- D. Frequency
Answer : A
Question 12
Which two options configures an ASR920 router as a hybrid clock? (Choose two.)
- A. ptp clock boundary domain 0
- B. ptp clock boundary domain 0 hybrid
- C. ptp clock ordinary domain 0 hybrid
- D. ptp clock ordinary domain 0
- E. ptp clock
Answer : BC
Question 13
What does SyncE mainly provides?
- A. SyncE provides for time of day synchronization
- B. SyncE provides for accurate frequency synchronization
- C. SyncE provides for phase synchronization
- D. SyncE provides for time of day
Answer : B
Question 14
What does the neighbor send label command enable when issued on BGP routers?
- A. Enables the routers to add IPv6 labels to outgoing BGP updates
- B. Enables an EBGP multihop peer to propagate the next hop unchanged
- C. Enables the routers to add MPLS labels to outgoing BGP updates
- D. Allows peering between loopbacks
Answer : C
Question 15
What command is used to insert the core node area border router into the data path?
- A. update-source loopback0
- B. set path-selection backup 1 install
- C. next-hop-self
- D. insert-data-path
Answer : C