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Q81. Refer to the exhibit.
Why is RC unable to receive prefix 1.1.1.1/32?
A. On RB. neighbor 10.10.12.1 send-community is not configured.
B. On RA, ip bgp-community new-format is not configured.
C. On RB. neighbor 10.10.23.3 send-community is not configured.
D. On RA, neighbor 10.10.12.2 send-community is not configured.
E. On RC. ip bgp-community new-format is not configured.
F. On RB, ip bgp-community new-format is not configured
G. On RB. neighbor 10.10.23.3 next-hop-self is not configured.
Answer: A
Q82. DRAG DROP
Refer to the exhibit.
PE1 and PE2 has a Layer 2 VPN over a GRE tunnel. This GRE tunnel built between P1 and P2 has LDP enabled. Consider a packet capture of the packets from CE1 and CE2 at P1 and R1 link. Drag the headers on the left and drop them on the right in the order of the encapsulation, starting from the inner header (at the top) to the outer header (at the bottom).
Answer:
Q83. In an end-to-end Layer 2 service, which technology provides the capability to detect, verify, isolate, and report faults across a provider network?
A. carrier detect
B. UDLD
C. BFD
D. CFM
Answer: D
Q84. Refer to the exhibit.
MPLS VPN service has been provisioned for a customer by using inter-AS MPLS Option C. It is possible to redistribute ISP1 and ISP2 received loopback addresses into the local IGP. How many labels are associated with packet forwarding between the ASBRs?
A. 0
B. 1
C. 2
D. 3
E. 4
Answer: C
Q85. Two routers that are running MPLS and LDP have multiple links that than connect them to each other. An engineer wants to ensure that the label bindings are not flushed from the LIB if one of the links fails. Which configuration meets this requirement?
A. the mpls ldp neighbor targeted command
B. the mpls ip command on a Cisco MPLS TE tunnel
C. the mpls ldp discovery targeted-hello accept command
D. the mpls ldp session protection command
Answer: D
Explanation:
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/fssespro.html#wp1027177
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_ldp/configuration/xe-3s/asr1000/mp-ldp-xe-3s-asr1000-book/mp-ldp-sessn-prot.html#GUID-FA0EF183-FA7C-488A-85C1-82BFEB91DCA7
Q86. Which is the main characteristic of LTE architecture compared to other mobile architectures?
A. Provides supports to deploy Layer 3 MPLS VPN model, where other mobile architectures do not support.
B. Offers node redundancy with the static route configured on the IP NodeB using the HSRP/VRRP virtual ip address.
C. Provides a simpler, less hierarchical model with the capability of simplistically distributing the core gateways.
D. Introduces a hierarchical model with connection-oriented service requirements and one-to-one relationships.
Answer: C
Explanation: https://books.google.co.in/books?id=-fyjBAAAQBAJ&pg=PA50&lpg=PA50&dq=LTE+Provides+a+simpler,+less+hierarchical+mo del+with+the+capability+of+simplistically+distributing+the+core+gateways.&source=bl&ots =Bwpk3CQ_jN&sig=2-kgrCA_7hEX3kuvSxWVV2AnAS0&hl=en&sa=X&ved=0CB0Q6AEwAGoVChMI_5La8tbCx wIVgZ6OCh1N7gHa#v=onepage&q=LTE%20Provides%20a%20simpler%2C%20less%20 hierarchical%20model%20with%20the%20capability%20of%20simplistically%20distributing %20the%20core%20gateways.&f=false
Q87. Which two frame types are correct when configuring T3 interfaces? (Choose two.)
A. M23
B. G.832
C. Extended Super Frame
D. C-bit parity
E. G.751
F. Super Frame
Answer: A,D
Explanation: http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-2/interfaces/configuration/guide/hc42crsbook/hc42t3e3.html
Q88. A network engineer is responsible for implementing a solution with Cisco IOS XR Software that insures continuous forwarding during a control plane failure. Which two technologies should the engineer consider? (Choose two.)
A. TE FRR
B. IP FRR
C. graceful restart
D. BFD
E. NSR
Answer: C,E
Explanation: http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-3/mpls/configuration/guide/b_mpls_cg43xcrs/b_mpls_cg43crs_chapter_01.html#task_1129
Q89. A Server Provider is seeing an increasing amount of attacks against its customers. For which kind of attack would an engineer want to design a Backscatter Traceback solution?
A. Rogue DNS/DHCP Servers
B. IP Spoofing
C. Ping of Death
D. Distributed Denial of Service
E. Network Attack TCP/UDP Scan
Answer: B
Explanation: Reference: http://www.cisco.com/web/about/security/intelligence/sp_infrastruct_scty.html
http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_10-4/104_ip-spoofing.html
Q90. Refer to the exhibit.
Which VLAN interface does untagged traffic pass through?
A. 1
B. 2
C. 3
D. 4
Answer: C
