Cisco 400-201 Exam PDF Syllabus

By | January 13, 2020

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Question No. 1

A service provider is using point-to-multipoint TE to forward MPLS traffic from one source to multiple destinations, what is a restriction of using this method?

Answer: C

Question No. 2

Refer to the exhibit

Refer to the exhibit. The requirements is to copy traffic from switch A and switch B and to send it to a probe connected to switch D across the routed network. Which technology meets this requirement?

Answer: B

Question No. 3

Which BGP feature protects the external BGP peering session from CPU utilization-based attacks that use forged IP packets?

Answer: B

Question No. 4

An ISP provides MPLS L3VPN services and is required to set up a multicast VPN. Which routers will be enabled with MDT to support a multicast VPN?

Answer: A

Question No. 5

What is the maximum capacity of a single Cisco CRS-1?

Answer: C

Question No. 6

Which two requirements to deploy 6PE and 6VPE solutions are mandatory? (Choose two.)

Answer: A, D

Question No. 7

MPLS label headers for packet media consist of:

Answer: B, C, D, E

Question No. 8

Refer to the exhibit.

Refer to the exhibit. Router A is not receiving any label information from Router B. Which two different solutions could fix this issues? (Choose two)

Answer: D, F

Question No. 9

Which Cisco IOS command must be applied to create a multiprotocol VRF?

Answer: C

Question No. 10

Which three configuration sections are required on service provider PE router to enable IPv4 layer 3 VPN? (Choose three)

Answer: A, D, E

Question No. 11

Which three characteristics does the SNMPv3 protocols add compared to previous SNMP versions? (Choose three)

Answer: B, C, E

Question No. 12

Operations team must deploy Inter-Chassis Communication Protocol to provide high availability services to dual-homed CE nodes. On which nodes must the Inter-Chassis Communication Protocol be configured to meet this requirement?

Answer: D

Question No. 13

Process-level redundancy is implemented by a system manager process that creates the standby process. What two functions are provided by the system-level process called Qnet Symlink Manager (QSM)? (Choose two.)

Answer: D, E

1.4. SP high end product

1.4.01. IOS-XR structure

Process-Level Redundancy

Process-level redundancy is implemented by a system manager process creating the standby process.

Because the active process created the standby process, the active process has all the information that it needs to communicate with the standby process. The active process uses a checkpoint database to share running state with the standby process. Symbolic links and abstract names are used to identify the processes.

Clients do not see the standby process until the active goes away. If a process fails and it has created a standby process, a system-level process called QNet Symlink Manager (QSM) and a library called Event Connection Manager (ECM) are used to re-establish links from the clients to the processes.

QSM provides:

Distribution of symbolic link information

Abstract name for a process or service

ECM provides:

Common information for connecting processes and services

Detection of broken connections

Only processes considered essential by development engineers are designated to support process-level redundancy. This is not a user-configurable option.

Clients have to reconnect to the “new” active process (the “original” standby process) when they detect that the active process has failed. Clients can connect to it using the symbolic links and abstract names. The new active process creates a new standby process.

The general steps in process redundancy are:

The active process dies.

The standby process becomes the active process.

A new standby process starts.

The new active process begins sending updates to the new standby process.

Clients begin using the new active process through the symbolic links and abstract names.

Question No. 14

Refer to the exhibit.

Which command group does a network administrator use to filter out R3 (3.3.3.3 subnet) from the R4 routing table?

Answer: A

Question No. 15

A client has an MPLS inter-AS implementation that is required to have QoS deployed between ASBRs based on IP packet. At the same time, the client requires minimization of the routing configuration between ASBRs for better scalability. Which MPLS inter-AS option can achieve this goal?

Answer: D

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