Cisco 400-201 Online Practice Questions and Exam Preparation

Cisco 400-201 Online Questions & Answers

• Question 691:

  A service provider needs to use VLANs 100,200, and 300 to offer three different services to customers. The customer VLAN range is 900 through 999. Which two tag configurations must the operations engineer configure to avoid VLAN overlapping? (Choose two.)

  A. 802.1ad outer VLANs are 100, 200, 300
  B. 802.1ad outer VLANs are 900-999
  C. 802.1ad inner VLANs are 900-999
  D. rewrite VLANs 900-900 to 100,200,300
  E. rewrite VLANs 100, 200, 300 to 900-900
  F. 802.1as inner VLANs are 100, 200, 300
  A. 802.1ad outer VLANs are 100, 200, 300
  C. 802.1ad inner VLANs are 900-999

• Question 692:

  A service provider has 10 exit points for the Internet. The BGP architecture deployed in this service provider contains two route reflectors. An operations engineer must provide a solution where each BGP router must select at least four BGP next hops from the BGP prefixes that are learned from the exit points. Which BGP feature achieves this goal with the least amount effort?

  A. BGP Additional Path
  B. BGP Link State
  C. BGP Diverse Path
  D. BGP Selective Route Download
  E. BGP Partial Mesh
  C. BGP Diverse Path

• Question 693:

  Drag the IS-IS LSP packet on the left to the corresponding function on the right.

  Select and Place:

  

  

• Question 694:

  IS-IS is deployed in a service provider network with more than 500 routers using the default IS-IS metric-style. The service provider must implement MPLS TE support with lesser service impact during the migration period. Which Cisco IOS command meets this requirements?

  A. Metric-style narrow wide
  B. Metric-style wide
  C. Metric-style wide transition
  D. Metric-style narrow transition
  C. Metric-style wide transition

• Question 695:

  Refer to the exhibit. Which route policy must be implemented to meet this requirement?

  

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

• Question 696:

  Two MPLS VPN customers want to acquire Internet access. They make use of overlapping address space but do not want to use NAT on the CPEs. Which action satisfies this requirement?

  A. Configure each VRF with a default route in the global table by using a static route toward each customer's range, pointing to the customer interface in the global table.
  B. Configure VRF-aware NAT with a default route in the global table for each VRF that requires it
  C. Configure a separate PE-CE sub interface that terminates in the global routing table on the PE.
  D. Configure the Internet upstream interface inside a VRF, Which becomes an extranet VRF to which customers join and make use of NAT in this VRF.
  A. Configure each VRF with a default route in the global table by using a static route toward each customer's range, pointing to the customer interface in the global table.
  B. Configure VRF-aware NAT with a default route in the global table for each VRF that requires it

• Question 697:

  A network engineer is tasked with supporting traffic discrimination over MPLS traffic engineering tunnels. To allocate restricted bandwidth to a certain type of traffic with no QoS degradation, which technique must be used?

  A. integrated services
  B. MPLS TE Diff-Serv full allocation model
  C. MPLS TE Diff-Serv Russian doll model
  D. IP precedence
  E. class of service
  C. MPLS TE Diff-Serv Russian doll model

• Question 698:

  Which four statements about the Carrier Supporting Carrier (CSC) feature are true? (Choose four.)

  A. MPLS is required between the PE and CE routers that connect the backbone carrier to the customer carrier.
  B. The backbone carrier must enable the PE router to check that the packets it receives from the CE router contain only the labels that the PE router advertised to the CE router.
  C. Every packet that crosses the backbone carrier must be encapsulated so that the packet includes MPLS labels
  D. AII PE routers that link the backbone carrier to the customer carrier must run Route Target Rewrite.
  E. A routing protocol is required between the PE and CE routers that connect the backbone carrier to the customer carrier. The routing protocol enables the customer carrier to exchange IGP routing information with the backbone carrier.
  A. MPLS is required between the PE and CE routers that connect the backbone carrier to the customer carrier.
  B. The backbone carrier must enable the PE router to check that the packets it receives from the CE router contain only the labels that the PE router advertised to the CE router.
  C. Every packet that crosses the backbone carrier must be encapsulated so that the packet includes MPLS labels
  E. A routing protocol is required between the PE and CE routers that connect the backbone carrier to the customer carrier. The routing protocol enables the customer carrier to exchange IGP routing information with the backbone carrier.

• Question 699:

  In a service provider network, a NOC engineer identifies an interface that flaps continuously. This interface connects to an EBGP peer. Which feature can reduce this instability on the service provider network?

  A. Non-Stop Forwarding
  B. BGP PIC
  C. IGP Prefix Prioritization
  D. IP Event Dampening
  D. IP Event Dampening

• Question 700:

  A network engineer is mitigating a recent DoS attack on a multihomed environment with asymmetric routing. Which two actions must be taken to mitigate this type of DoS attack? (Choose two.)

  A. Enable ingress infrastructure access lists on the distribution switches.
  B. Enforce inbound filtering policies on the border network devices.
  C. Enable a loose uRPF check on the border routers.
  D. Enable a strict uRPF check on the border routers.
  E. Install Cisco Intrusion Detection Systems on the ISP links.
  B. Enforce inbound filtering policies on the border network devices.
  C. Enable a loose uRPF check on the border routers.