Cisco 400-201 Practice Exam Guide

Question No. 1

What is the purpose of Dual Ring Interconnect with D C for SDH rings?

• A. Protects signals when a ring switch fails
• B. Protects signals when multiple span switches fail
• C. Protects pre-emptible traffic from being dropped when a ring switch occurs
• D. Protects signals against any combination of link failure in each ring

Question No. 2

Which are the three characteristics of SDR? (Choose three)

• A. The logical router can span across chassis.
• B. Each logical router has a distinct fabric and system controller module.
• C. Owner SDR can be reloaded, without affecting all non-SDRs.
• D. The logical router has dedicated route processor.
• E. The logical router can share line cards.
• F. The fabric and system controller module are shared by all logical routers.

Question No. 3

What are the three operating modes of HDLC? (Choose three.)

• A. Normal Peer Mode
• B. Asynchronous Balanced Mode
• C. Asynchronous Client Mode
• D. Normal Response Mode
• E. Asynchronous Response Mode
• F. Normal Balanced Mode

Question No. 4

How many token buckets are needed to support a multi-actions policer that meters conforming, exceeding and violating traffic?

• A. 1
• B. 3
• C. 5
• D. 2
• E. 6
• F. 4

Question No. 5

Which of the following statements regarding Control Plane Policing (CoPP) is correct? (Choose three.)

• A. Control Plane Policing (CoPP) addresses the need to protect the management planes, ensuring routing stability, availability, and critical packet delivery.
• B. Control Plane Policing (CoPP) leverages MQC to define traffic classification criteria and to specify configurable policy actions for the classified traffic.
• C. Control Plane Policing (CoPP) uses a dedicated “control-plane” command via the Modular QoS CLI (MQC) to provide filtering and rate limiting capabilities.
• D. Control Plane Policing (CoPP) uses “service policy” command under relevant interfaces to filter DOS packet to protect routing packets.
• E. Control Plane Policing (CoPP) protects the transit management and data traffic through the router.

Question No. 6

Refer to the exhibit.

A network engineer installs a Cisco XR 12416 with several modules. One of the modules fails to load Cisco IOS-XR version 3.9.1 and is stuck in the BRINGDOWN state. Which issue is the source of the problem?

• A. insufficient route memory to boot the blade
• B. insufficient packet memory to boot the blade
• C. insufficient DRAM to boot the blade
• D. blade in the incorrect slot

Question No. 7

Which command will display the MPLS label binding for IP prefix 1.1.1.0 on the router?

• A. All of the above.
• B. show tag-switching tdp binding 1.1.1.0/24
• C. show tag-switching tdp bindings neighbor 1.1.1.0
• D. A and B both will show the binding.
• E. show tag-switching interface e0/0

Question No. 8

In Cisco IOS XR Software Multicast Routing Implementation, which three features are supported in IPv6 on Cisco CSR routers? (Choose three.)

• A. Multicast NSF
• B. PIM-SSM
• C. OOR handling
• D. Aggregation multicast
• E. Integrated multicast
• F. PIM-Bidirectional

Question No. 9

A network engineer receives a request to tunnel Frame Relay traffic for DCLI 100 over the MPLS cloud while maintaining circuit information. Which solution meets this requirement?

• A. L2VPN
• B. L3VPN
• C. VPLS
• D. GRE

Question No. 10

Which three of these statements about PPPoE are true? (Choose three.)

• A. PPPoE can provide a host with access to a destination over Ethernet. You can have only one PPPoE session per PVC.
• B. You must install PPPoE client software on all hosts that connect to the Ethernet segment. This means that the access provider must maintain a CPE.
• C. You cannot use PPPoE with Cisco Service Selection Gateway.
• D. PPPoE implementation is susceptible to broadcast storms and possible denial-of-service attacks.
• E. Per-session accounting is possible, which allows the service provider to charge the subscriber based on session time for various services offered. The service provider can also require a minimum access charge.

Question No. 11

Refer to the exhibit.

All routers are running IS-IS. Which routers must be Level 2 routers?

• A. B, D, E and G
• B. A, D, E, and H
• C. B, C, F, and G
• D. B, C, E, F, and G
• E. A, B, C, D, F, G, and H

Question No. 12

A network engineer wants to avoid route looping in an internal BGP. Which two BGP attributes are used by a route reflector to avoid this issue? (Choose two.)

• A. originator ID
• B. secure ID
• C. cluster ID
• D. network ID
• E. reflector ID

Question No. 13

Which two statements are correct with regard to route distinguisher as defined in RFC 4364 AKA IP-VPN (MPLS-VPN)? (Choose two.)

• A. The configuration to define Route-Distinguisher is ip vrf CNT rd 1:1
• B. A route distinguisher can be imported and exported to and from a VRF
• C. Route-Distinguisher is an 8 byte BGP attribute value used in influencing BGP best path algorithm.
• D. Route-Distinguisher is an 8 byte value used in creating unique VPNv4 address.

Question No. 14

Refer to the exhibit

Refer to the exhibit. a network engineer is troubleshooting PTP on the Cisco ASR 9000 router. what can be concluded about the interface based on output provided ?

• A. The interface is aware of a better clock than the one it would advertise if it was in master state.
• B. the interface is about to go into master state
• C. the interface receives times stamps from a master clock, but the routers clock is not yet synchronized to the master
• D. the interface is not yet ready to participate on PTP

Question No. 15

Refer to the exhibit

Refer to the exhibit what is the status of the L2 tunnel between PE1,PE2 and the layer 2 switches ?

• A. The layer 2 tunnel is down due to the ACL is applied on the PE2 interface
• B. The layer 2 tunnel is up and SW1 become the root bridge for VLAN 10
• C. The layer 2 tunnel is down due to the MTU mismatch between SW1 and SW2
• D. The layer 2 tunnel is up but no BPDUs are exchange unless an extra configuration is applied