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Version: 17.0
Question: 21

Refer to the exhibit. The communication between CE-1 and CE-2 is not operational. An operations engineer notice that the L2TP connection failed to establish because inbound ip access list had been applied on the PE-2 Gig0/1 interface. Which ACL entry must be added to control connection successfully established ?

A. permit udp host 10.1.1.1 any eq 1701
B. permit tcp any eq 1701 host 10.1.1.1
C. permit udp any host 10.1.1.1 eq 1701
D. permit tcp host 10.1.1.1 eq 1701 any

Answer: C

Question: 22

In a network function virtualization reference architecture, which two statement about virtualized network function are true?(Choose two)

A. VNF is the totality of all hardware and software components that build up the NFV environment
B. One VNF can be deployed over multiple VMs, where each VM hosts a single component of the VNF
C. VNF performs the orchestration and lifecycle management of the software resources that supports the virtualized infrastructure
D. VNF is a virtualization of a legacy network function
E. VNF functionality includes control and management of the compute, storage, and network resources in the NFV framework

Answer: B, D

Question: 23

An support engineer has been tasked to protect an ISP infrastructure from the growing number of encrypted DDoS attacks. The solution should also validate the eBGP peering. Which solution accomplishes these goals?

A. BGP FlowSpec
B. BTSH
C. BGP Route Dampening
D. BGP LS
E. RTBH

Answer: E

Question: 24

ISP A provides L2VPN services to Company B through an MPLS network. Company B uses all available CoS values to classify and different traffic forwarding within all Company B sites. ISP A uses the following CoS values to differentiate service classes for the VPN customer traffic
*MPLS EXP 0 for Bronze service class
*MPLS EXP 1 for Silver service class
*MPLS EXP 2 for Gold service class
*Remaining MPLS EXP values for ISP A internal use

ISP A’s policy is to forward VPN customer traffic based only on their Bronze, silver and Gold service classes. Which QoS method must ISP A implement to achieve this?

A. Short-pipe Mode
B. Russian Doll Model
C. Pipe Mode
D. Uniform Mode
E. Maximum Allocation Model

Answer: D

Question: 25

Refer to the exhibit, An engineer is asked to troubleshoot packet drops inside a network which option is true?

A. HTTP traffic originated by the 10.10.10.0/24 subnet uses up to 10% of the interface bandwidth. However, if no congestion is present, no more bandwidth is allocated to HTTP traffic
B. SMTP traffic originated by the 10.10.10.0/24 subnet uses up to 10% of the bandwidth, however, if no congestion is present, more bandwidth is allocated to SMTP traffic
C. SMTP traffic originated by the 10.10.10.0/24 subnet uses up to 10% of the bandwidth. However , if no congestion is present, SMTP traffic above 10% of link bandwidth is dropped
D. HTTP traffic originated by the 10.10.10.0/24 subnet uses up to 10% of the interface bandwidth. However, if congestion is present, less bandwidth is allocated to HTTP traffic

Answer: C

Question: 26

Which are the two limitations of the predefined NAT solution?(Choose two)

A. The Bulk port allocation configuration is not available
B. The global port limit parameter is not available for the predefined mode
C. Only the port-presentation option is available
D. NetFlow and syslog are not supported
E. It cannot be configured for each of the inside VRF instance

Answer: A,B

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