Which statement describes the delay variation requirement of the voice service for the IP bearer network?

Configure VRFs and relevant policies on a PE as follows:

If a route isimportedto the routing table of VRF 1, which VRF can the route match?

As shown in the figure, the primary tunnel uses the path RTA -> RTB -> RTC. There are two FRR paths: One protects the link between RTA and RTB and the other one protects the link between RTB and RTC.If a path in the primary tunnel is faulty, which command can be used on RTA to locate the fault?

All nodes in the topology belong to the same IGP are
a. They can learn routers from each other and have the TE capability. The tunnels configured below can be Up. Refer to the following configuration of RTA,Which of the following statements are true?
#
mpls lsr-id 1.1.1.1
mpls
mpls te
mpls rsvp-te
mpls te cspf
#
explicit-path pri-path
next hop 3.1.1.2
next hop 4.1.1.2
next hop 5.1.1.2
#
explicit-path bypass-1
next hop 2.1.1.2next hop 6.1.1.1
#
explicit-path bypass-2
next hop 2.1.1.2
next hop 7.1.1.2
#
explicit-path bypass-3
next hop 8.1.1.2
next hop 9.1.1.2
#
interface Tunnel1/0/0
ip address unnumbered interface LoopBack0
tunnel-protocol mpls te
destination 4.4.4.4
mpls te tunnel-id 100
mpls te record-route label
mpls te path explicit-path pri-path
mpls te fast-reroute
mpls te commit
#
interface Tunnel2/0/0
ip address unnumbered interface LoopBack0
tunnel-protocol mpls te
destination 2.2.2.2
mpls te tunnel-id 101
mpls te record-route label
mpls te path explicit-path bypass-1
mpls te bypass-tunnel
mpls te protected-interface GigabitEthernet 3/0/0
mpls te commit
#
interface Tunnel2/0/1
ip address unnumbered interface LoopBack0
tunnel-protocol mpls te
destination 3.3.3.3
mpls te tunnel-id 102
mpls te record-route label
mpls te path explicit-path bypass-2
mpls te bypass-tunnel
mpls te protected-interface GigabitEthernet 3/0/0
mpls te commit
#
interface Tunnel2/0/2ip address unnumbered interface LoopBack0
tunnel-protocol mpls te
destination 4.4.4.4
mpls te tunnel-id 103
mpls te record-route label
mpls te path explicit-path bypass-3
mpls te bypass-tunnel
mpls te protected-interface GigabitEthernet 3/0/0
mpls te commit
#

Refer to the exhibit.

As shown in the figure, CE 1 and CE 3 belong to VPN A, CE 2 and CE 4
belong to VPN B, and users on different VPNs are not allowed to access each other. Which of the following configurations can enable mutual access between CE 1 and CE 4 but forbid cross-VPN access between other CEs?
Configuration of PE 1:
sysname PE 1
#
ip vpn-instance vpna
route-distinguisher 100:1vpn-target 1:1 3:3 export-extcommunity
vpn-target 1:1 3:3 import-extcommunity
# i
p vpn-instance vpnb
route-distinguisher 100:2
vpn-target 2:2 4:4 export-extcommunity
vpn-target 2:2 4:4 import-extcommunity
#
Configuration of PE 2:
#
sysname PE 2
#
ip vpn-instance vpna
route-distinguisher 200:1
vpn-target 1:1 export-extcommunity
vpn-target 1:1 import-extcommunity
#
ip vpn-instance vpnb
route-distinguisher 200:2
vpn-target 2:2 4:4 export-extcommunity
vpn-target 2:2 4:4 import-extcommunity