4A0-102 Online Practice Questions and Answers
Which of the following is the minimum requirement for an AS to be considered multi- homed?
A. A single connection to a single service provider.
B. Two connections to a single service provider.
C. Two connections to two different service providers.
D. Multiple connections to different service providers.
Which of the following about a single-homed AS is FALSE?
A. A single-homed AS is also known as a stub AS.
B. A single-homed AS is also known as a leaf AS.
C. A single-homed AS uses either the ISP AS number or a private AS number.
D. A single-homed AS can be either transit or non-transit
Click the exhibit.
Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of
200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?
A. On router R5 only.
B. On either router R1or R2.
C. On both routers R1and R2.
D. On all routers R1, R2 and R5.
Which of the following is TRUE if the state of one BGP neighbor shows Active?
A. The neighbor will send a Keepalive message.
B. The router is trying to initiate a TCP connection to that neighbor.
C. The router received an Open message with the correct parameters.
D. The router is actively exchanging updates with that neighbor.
Click the exhibit.
Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between ISP 1 and the other ISPs?
A. ISP 1 has a peering relationship with ISP 2 and ISP 4.
B. ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.
C. ISP 1 has a peering relationship with ISP 2 and ISP 3.
D. ISP 1 has a transit relationship with ISP 2 and ISP 4.
E. ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.
Click the exhibit.
Routers RR1 are RR2 are redundant route reflectors for clients R3 and R4. Which of the following is a valid configuration on router R3?
A. Option A
B. Option B
C. Option C
D. Option D
Which of the following statements regarding Internet Exchange Points is FALSE?
A. They provide both peering and transit services.
B. They provide services only to Tier 1 service providers.
C. They can be either public or private.
D. They provide services at the local, regional and continental levels.
Which of the following is TRUE?
A. There can only be one community associated with a route.
B. Community is an optional non-transitive attribute.
C. Community is an optional transitive attribute.
D. Community is a well-known discretionary attribute.
The user of an Alcatel-Lucent 7750 SR wants to see the effect of changing an import policy immediately. What is the best command to force re-evaluation of the import policy with minimal impact?
A. Configure router bgp shutdown
B. Clear router bgp neighbor
C. Clear router bgp neighbor
D. Clear router bgp protocol
Click the exhibit.
Routers RR1 and RR2 are route reflectors with the same Cluster-ID. How does router RA treat the updates for prefix 192.168.1.0/27 received from routers RR1 and RR2?
A. Router RA prefers the update received from router RR1.
B. Router RA prefers the update received from router RR2.
C. Router RA flags both updates as invalid.
D. Router RA accepts both updates and flags them as used.