On the BGP network, which of the following policies can be used to prevent BGP-targeted attacks?

• A.Only packets carrying the loopback IP addresses of service routers can pass through the interface, and all other packets are discarded.
• B.Enable the BGP authentication function between BGP peers.
• C.At the outbound interface of a router, filter the TCP packets of a non-service router. The ID of the destination interface is 179 at the loopback IP address of the non-service router.
• D.At the inbound interface of a router, filter the TCP packets of a non-service router. The ID of the destination interface is 179 at the loopback IP address of the non-service router

Comment: *

Name: *

Email: *

Verification: *

Which statement about the interworking between a VPN and the Internet is false?(D)

• A.For a VPN and the Internet to interwork, the user device used to access the Internet must have a route to the desired address on the Internet and a backhaul route.
• B.For a VPN and the Internet to interwork, network address translation (NAT) must be performed. NAT can be deployed on the interface of a PE used to connect to the Internet gateway, on the interface of a PE used to connect to a CE, or on the interface of a CE used to connect to a PE.
• C.A VPN and the Internet can interwork through the PE, Internet gateway, or CE.
• D.A VPN and the Internet can interwork through the CE or PE.

Comment: *

Name: *

Email: *

Verification: *

RTA is a leaf router that directly connects to host A through interface GigabiteEthernet 1/0/0. The interface is
configured as follows:

Hos a sends a IGMPv2 Report message to group 2321.2.3. Which entry can be displayed by the displayed by
the igmp ssm-mapping group command?

• A.(10.10.1.1, 232.1.2.2)
• B.(10.10.1.1, 232.1.1.) and (10.10.1., 2321.2.3)
• C.(10.10.1.1, 232.1.1.1)

Comment: *

Name: *

Email: *

Verification: *

User A want to obtain a better network service for business development and signs an SLA with a corner. User A purchases a bandwidth of 5 Mbit/s to ensure the voice service (requiring short delay), vide service, key data services, and other services, If you were corner network administrator.
What would you do on the PE to ensure these services?

• A.Mark the VoIP service as EF, set the CIR to 2 Mbit/s: marks the video service as AF 3 and set the CIR and PIR to 2 Mbit/s: mark key data services as AF4, set the CIR to 2 Mbit/s and the PIR to 5 Mbit/s mark other service as BE, set the CIR to 0 Mbit./s and set PIR to 5 Mbit/s
• B.Mark the VoIP service as EF, set the CIR to 0Mbit/s, and set the PIR to 1 Mbit/s mark the video service as AF 4 and set the CIR and PIR to 2 Mbit/s mark key data services as AF3, set the CIR to 1 Mbit/s and the PIR to 5 Mbit/s: mark other services as AF1, set the CIR to 2 Mbit/s and Set PIR to 5 Mbit/s.
• C.Mark the VoIP service as EF, set the CIR to 1 0Mbit/s, and set the PIR to 1 Mbit/s mark the video service as AF 4 and set the CIR and PIR to 2 Mbit/s mark key data services as AF3, set the CIR to 2 Mbit/s and the and the PIR to 5 Mbit/s : mark other services as BE, set the CIR to 0 Mbit/s and set PIR to 5 Mbit/s.
• D.Mark the VoIP service as EF, set the CIR to 0Mbit/s, and set the PIR to 1 Mbit/s mark the video service as AF 4 and set the CIR and PIR to 2 Mbit/s mark key data services as AF3, set the CIR to 1 Mbit/s and the PIR to 5 Mbit/s: mark other services as AF1, set the CIR to 2 Mbit/s and Set PIR to 5 Mbit/s.

Comment: *

Name: *

Email: *

Verification: *

As shown in the figure, the bearer network is deployed in full mesh mode. For example, RTA uses the physical interface ATM 1/0/0. The interface is devised into ATM 10/0.2 connect to RTC and RTD, respectively . The GigabiteEthernet 2/0/0 and GigabitEthernet 3/0/0 interface are used to set up a trunk as the VRRP heartbeat cable. The UMG work in active/standby mode. Media interface connected to RTA and RTB belong to VLAN 10. VRRP is enable at the VLAN interface RTA is the master router. The interface is configured as follows:

Which of the following RTA configurations are correct in VLAN 10?
A)

B)

C)

D)

• A.Option B
• B.Option D
• C.Option A
• D.Option C

Comment: *

Name: *

Email: *

Verification: *