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質問 1：
The configuration of an Nokia 7750 SR is given below. Router Rl has established BGP sessions with routers R2 and R3. Which of the following is TRUE?
A. Router R1forms an iBGP session with router R2, and an eBGP session with router R3.
B. The types of BGP sessions with routers R2 and R3 cannot be determined.
C. Router R1forms iBGP sessions with routers R2 and R3.
D. Router R1forms eBGP sessions with routers R2 and R3.
正解：B
質問 2：
Which of the following pieces of information is NOT carried inside an EVPN IP-Prefix (type 5) route update associated with an EVPN VPLS?
A. The MAC address of an attached host.
B. The IP prefix of a subnet in the layer-3 domain that the VPLS belongs to.
C. The VPLS's route-distinguisher and route-target values.
D. The VPLS's service tunnel ID (MPLS label or VNI value).
正解：B
質問 3：
Which of the following statements about IPv6 Link-Local addresses is FALSE?
A. They are only valid for communication within the same broadcast domain.
B. They all have the same 64-bit subnet prefix.
C. They are assigned to every physical interface running IPv6.
D. They have an interface ID derived by default from the interface's IPv4 address.
正解：D
質問 4：
Which of the following statements about a distributed EVPN VPRN service is FALSE?
A. It acts as a router, carrying IP packets between customer sites.
B. It requires two types of interfaces, one towards customer sites and one towards the backhaul VPLS.
C. Its configured route target indicates to the PE router which of the received BGP route updates are relevant to this VPRN.
D. It relies on MP-BGP and on the EVPN address family to populate its routing table.
正解：B
The configuration of an Nokia 7750 SR is given below. Router Rl has established BGP sessions with routers R2 and R3. Which of the following is TRUE?
A. Router R1forms an iBGP session with router R2, and an eBGP session with router R3.
B. The types of BGP sessions with routers R2 and R3 cannot be determined.
C. Router R1forms iBGP sessions with routers R2 and R3.
D. Router R1forms eBGP sessions with routers R2 and R3.
正解：B
質問 2：
Which of the following pieces of information is NOT carried inside an EVPN IP-Prefix (type 5) route update associated with an EVPN VPLS?
A. The MAC address of an attached host.
B. The IP prefix of a subnet in the layer-3 domain that the VPLS belongs to.
C. The VPLS's route-distinguisher and route-target values.
D. The VPLS's service tunnel ID (MPLS label or VNI value).
正解：B
質問 3：
Which of the following statements about IPv6 Link-Local addresses is FALSE?
A. They are only valid for communication within the same broadcast domain.
B. They all have the same 64-bit subnet prefix.
C. They are assigned to every physical interface running IPv6.
D. They have an interface ID derived by default from the interface's IPv4 address.
正解：D
質問 4：
Which of the following statements about a distributed EVPN VPRN service is FALSE?
A. It acts as a router, carrying IP packets between customer sites.
B. It requires two types of interfaces, one towards customer sites and one towards the backhaul VPLS.
C. Its configured route target indicates to the PE router which of the received BGP route updates are relevant to this VPRN.
D. It relies on MP-BGP and on the EVPN address family to populate its routing table.
正解：B
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