Q1. Which are the three header fields that affect how Equal-Cost Multipath hashes traffic flow into interface groups? (Choose three.)
A. source MAC address
B. source port
C. source IP address
D. destination IP address
E. IP protocol ID
F. destination MAC address
Answer: B,C,D
Explanation: https://supportforums.cisco.com/document/111291/asr9000xr-loadbalancing-architecture-and-characteristics#field
Q2. A company is deciding between an HVR and SVR solution in order to finalize a virtualization project proposal. Which is an advantage of a HVR solution versus a SVR solution?
A. A HVR solution implements dedicated data plane resources.
B. A HVR solution implements shared control plane resources.
C. A HVR solution introduces significant contention of resources.
D. A HVR solution implements dedicated chassis resources.
Answer: A
Explanation:
Comparison of Virtualized Routing Architectures
Category Hardware-Isolated Virtual Router Software-Isolated Virtual Router
Control plane resources (CPU, memory)
Dedicated
Shared
Data plane resources (forwarding engine, queues)
Dedicated
Shared
Chassis resources (power supplies, blowers, fabric)
Shared
Shared
Management, configuration
Dedicated
Typically shared, but varies depending on degree of virtualization
Connections between virtualized routing entities
Typically external
Typically internal, but possibly external
Per-chassis scalability (routing adjacencies, prefixes)
Increased with additional logical routers
Unaffected by additional virtual routers
Reference: http://www.cisco.com/en/US/solutions/collateral/ns341/ns524/ns562/ns573/white_paper_c1 1-512753_ns573_Networking_Solutions_White_Paper.html
Q3. In an MPLS VPN environment, the QoS marking over the MPLS backbone must be different from the one that is received from the customer. The forwarding on the egress PE is based on the marking that is set by the ingress PE. Which null label and QoS mode can achieve this?
A. MPLS explicit null with pipe mode
B. MPLS implicit null with short pipe mode
C. MPLS implicit null with uniform mode
D. MPLS explicit null with uniform mode
E. MPLS explicit null with short pipe mode
F. MPLS implicit null with pipe mode
Answer: A
Explanation:
http://www.cisco.com/en/US/tech/tk828/technologies_q_and_a_item09186a00800a43f5.sht ml#wp27379
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_diffserv/configuration/15-mt/mp-te-diffserv-15-mt-book/mp-diffserv-tun-mode.pdf
https://ccdewiki.wordpress.com/2013/05/31/three-qos-models-in-mpls/
Q4. DRAG DROP
Drag each resiliency mechanism on the left to its corresponding technology on the right.
Answer:
Q5. What is the minimum hardware configuration of the multishelf Cisco CRS-1 system?
A. One route processor (RP) card and one modular services card (MSC)
B. One distributed route processor (DRP) and one S13 fabric card (SFC)
C. One line card chassis (LCC) and one fabric card chassis (FCC)
D. One route processor (RP) and one fabric card chassis (FCC)
E. One line card chassis (LCC) and one S13 fabric card (SFC)
Answer: C
Explanation:
1.4. SP high end product
A minimum of one LCC and one FCC are required to configure a multishelf system.
Q6. What is the main advantage of H-VPLS over VPLS?
A. H-VPLS provides redundancy.
B. H-VPLS provides security.
C. H-VPLS improves the scalability.
D. H-VPLS allows a broader use of protocols.
Answer: C
Explanation:
http://www.cisco.com/en/US/products/ps6603/products_white_paper09186a00801ed506.s html
Q7. Which MPLS technology will achieve LAN extensions over the service provider backbone?
A. AToM
B. VPLS
C. L2VPN
D. L2TPv3
Answer: B
Explanation: https://tools.ietf.org/html/rfc7041
Q8. Refer to the exhibit. Both MPLS TE tunnel 14 and MPLS TE tunnel 124 pass over the same physical links. Which configuration on R1 enables TE 14 to be the primary tunnel and TE 124 to become active when TE 14 is admin disabled?
A. Interface Tunnel14
tunnel mpls traffic-eng priority 3 1
!
Interface Tunnel124
tunnel mpls traffic-eng priority 5 4
B. Interface Tunnel14
tunnel mpls traffic-eng priority 4 1
!
`Interface Tunnel124
tunnel mpls traffic-eng priority 3 2
C. Interface Tunnel14
tunnel mpls traffic-eng priority 7 7
!
Interface Tunnel124
tunnel mpls traffic-eng priority 1 1
D. Interface Tunnel14
tunnel mpls traffic-eng priority 3 2
!
Interface Tunnel124
tunnel mpls traffic-eng priority 4 1
Answer: B
Q9. Which two flexible service mapping features that are used on the ES40 line card can classify traffic into different service instances, in order to consume fewer VLANs? (Choose two.)
A. CoS
B. DSCP
C. IP precedence
D. MPLS experimental bit
E. ToS
F. EtherType
Answer: A,F
Explanation:
Reference: http://www.cisco.com/c/en/us/td/docs/routers/7600/install_config/ES40_config_guide/es40_ sw_config/es40_chap7.html#pgfId-1500091
Q10. Refer to the exhibit.
ABC and XY2 MPLS VPN customers require Internet access. An ISP engineer deployed the solution on PE1 device. Which statement about CEs connectivity to Internet is true?
A. Only CE-XYZ will have connectivity
B. Neither CE will have connectivity, as IAR does not have route back to the subnet used on NAT configuration.
C. Both CEs will have connectivity.
D. Only CE-ABC will have connectivity.
E. Neither CE will have connectivity, as both CEs are using the same subnet used on NAT configuration.
Answer: D