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質問 1：
If there are no receivers on a PIM-SM network, which of the following routers will have multicast routing entries?
A. Source DR
B. Receiver s router
C. Last-hop router
D. RP router
正解：A,D
質問 2：
In a route-policy, which of the following BGP attributes can be used in apply clauses?
A. MED
B. Tag
C. local-Preference
D. AS. Path
正解：A,C,D
質問 3：
DHCP snooping is a security feature that can be used to defend against carious attacks, including
A. Starvation attacks by changing the CHADDR field value
B. TCP flag attacks J
C. Bogus DHCP server attacks
D. Man-in-the-middle attacks and IP/MAC spoofing attacks
正解：A,C,D
質問 4：
RSTP provides faster convergence than STP, what are causes?
A. In RSTP, when a port receives is bpdus form the upstream designated bridge , the port will compare the own stored is bpdu with the forwarding state.
B. When the root port fails, the optimal alternate port will become the root port and the forwarding state.
C. When the designated port fails, the optimal alternate port will become the root port and enter the forwarding state.
D. RSTP defines the edge port role. The edge port does not receive and process configuration BPDUs, and not participate in RSTP calculation
E. In RSTP, when a port is elected as the designated port, it enters the discarding state. Then the port immediately enters the forwarding state
正解：A,B,D,E
質問 5：
How many bits does an MPLS label field have?
A. 8
B. 1
C. 3
正解：A
質問 6：
The AS_Path attributes take effect within an AS. Therefore, a BGP router will not advertise any Update message receives from an IBGP peer to other IBGP peers.
A. TRUE
B. FALSE
正解：A
If there are no receivers on a PIM-SM network, which of the following routers will have multicast routing entries?
A. Source DR
B. Receiver s router
C. Last-hop router
D. RP router
正解：A,D
質問 2：
In a route-policy, which of the following BGP attributes can be used in apply clauses?
A. MED
B. Tag
C. local-Preference
D. AS. Path
正解：A,C,D
質問 3：
DHCP snooping is a security feature that can be used to defend against carious attacks, including
A. Starvation attacks by changing the CHADDR field value
B. TCP flag attacks J
C. Bogus DHCP server attacks
D. Man-in-the-middle attacks and IP/MAC spoofing attacks
正解：A,C,D
質問 4：
RSTP provides faster convergence than STP, what are causes?
A. In RSTP, when a port receives is bpdus form the upstream designated bridge , the port will compare the own stored is bpdu with the forwarding state.
B. When the root port fails, the optimal alternate port will become the root port and the forwarding state.
C. When the designated port fails, the optimal alternate port will become the root port and enter the forwarding state.
D. RSTP defines the edge port role. The edge port does not receive and process configuration BPDUs, and not participate in RSTP calculation
E. In RSTP, when a port is elected as the designated port, it enters the discarding state. Then the port immediately enters the forwarding state
正解：A,B,D,E
質問 5：
How many bits does an MPLS label field have?
A. 8
B. 1
C. 3
正解：A
質問 6：
The AS_Path attributes take effect within an AS. Therefore, a BGP router will not advertise any Update message receives from an IBGP peer to other IBGP peers.
A. TRUE
B. FALSE
正解：A
立花** -
私にH12-224合格させたPass4Testさん、本当に感謝してます！