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Q1. Refer to the network diagram in the exhibit.
If both ASBRs are advertising the external Destination X network as OSPF E2 route, what is the best path for the R1 router to reach Network X?
A. R1 will use the path via ASBR 2 as the best path.
B. R1 will use the path via ASBR 1 as the best path.
C. R1 will load balance between two equal cost paths via ASBR 1 and ASBR 2.
D. R1 will sees two equal costs and will choose the path through the ASBR with the lower OSPF router ID.
Answer: B
Q2. Which of the following is used by an IS-IS router to detect other IS-IS neighbor routers and to form adjacencies?
A. ESH
B. ISH
C. IIH
D. PSNP
E. CSNP
Answer: C
Explanation:
ISIS actually features three different hello types An ES Hello (ESH) is send by all End Systems, and all IS devices listen for this Hello An IS Hello (ISH) announces the presence of an IS - An IS Hello is sent by all IS devices, and End Systems listen for these hellos Finally, an IS-to-IS Hello (IIH) is used by an IS to discover other ISes and to form adjacencies with them A router will send an IIH to another router on the link to form or maintain an adjacency, but it will still send an ISH as well in case there are end systems located on that segment
Q3. BGP peerings can be secured using which protection mechanism?
A. SHA authentication
B. MD5 authentication
C. SSH
D. SSL
E. AAA
F. digital certificates
Answer: B
Explanation:
http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a0080b 52107.shtml
Q4. On Cisco IOS XR Software, which set of commands is used to enable the gi0/0/0/1 interface for OSPF in area 0?
A. interface gi0/0/0/0 ip address 10.1.1.1 255.255.255.0 ! router ospf 1 network 10.1.1.1 0.0.0.0 area 0
B. interface gi0/0/0/0 ip address 10.1.1.1 255.255.255.0 ! router ospf 1 network 10.1.1.1 255.255.255.255 area 0
C. router ospf 1 area 0 interface GigabitEthernet0/0/0/1
D. interface gi0/0/0/0 ip address 10.1.1.1 255.255.255.0 ip ospf 1 area 0
E. router ospf 1 address-family ipv4 unicast interface GigabitEthernet0/0/0/1 area 0
F. router ospf 1 address-family ipv4 unicast interface GigabitEthernet0/0/0/1 area 0
Answer: C
Q5. A service provider is running BGP with clients at the edge of the network. The service provider sees that routing updates from one site are being dropped when the other site receives them. Which feature.fixes this issue?
A. EBGP multihop
B. inter-AS peering
C. AS-override
D. allow-AS in
Answer: C
Q6. How many total OSPF virtual links are configured in this multiarea OSPF network which supports both OSPFv2 and OSPFv3 for IPv4 and IPv6 routing?
A. 1
B. 2
C. 3
D. 4
Answer: B
Explanation:
#Show running-config | include virtual – check how many router having “virtual “ entry
Q7. Refer to the Cisco IOS XR route policy exhibit.
Which two statements are correct? (Choose two.)
A. "test" and "foo" are references to the community sets.
B. The "match-any" option indicates matching either the standard community or extended community.
C. Routes that match both the "test" and "foo" conditions will have their local preference set to 20.
D. All non-matching routes will be permitted.
Answer: A,D
Q8. Refer to the exhibit.
XR4 must be configured to advertise only AS 100 local subnets to AS 10..Which configuration on XR4 achieves this goal?
A. as-path-set LOCAL ios-regex ^$ route-policy ADV if as-path in LOCAL then pass endif
B. as-path-set LOCAL ios-regex '^100$' route-policy ADV if as-path in LOCAL then pass endif
C. as-path-set LOCAL ios-regex '^$' route-policy ADV if as-path in LOCAL then pass endif
D. as-path-set LOCAL ios-regex ^100$ route-policy ADV if as-path in LOCAL then pass endif
Answer: C
Q9. RAG DROP
Answer:
Q10. Which option is the minimum required configuration to enable PIM on a Cisco IOS XR router interface?
A. router pim address-family ipv4 interface GigabitEthernet0/0/0/0
B. router pim interface GigabitEthernet0/0/0/0 address-family ipv4 enable
C. router pim address-family ipv4 interface GigabitEthernet0/0/0/0 enable
D. router pim interface GigabitEthernet0/0/0/0 enable
E. router pim address-family ipv4 interface GigabitEthernet0/0/0/0 address-family ipv4 enable
Answer: D