[Free] Download New Latest (June 2016) Cisco 400-201 Practice Test 131-140

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QUESTION 131

In the context of MPLS Traffic engineering, TE path calculation is conducted by:

 

A.

TE middle point

B.

TE tail end

C.

Independent server

D.

All TE nodes along the path

E.

TE head end

 

Correct Answer: E

 

 

QUESTION 132

What is one of the primary overhead fields associated with the Optical Payload Unit (OPU)?

 

A.

path monitoring

B.

tandem connection monitoring activation deactivation (TCM ACT)

C.

Payload Structure Identifier (PSI)

D.

multiframe alignment signal (MFAS)

E.

section monitoring

 

Correct Answer: C

Explanation:

Optical Payload Unit (OPU)

In order to begin describing the OTN as defined by the ITU G.709 standard, we must first enumerate its critical elements, their termination points, and the way they relate to one another in terms of hierarchy and function.

 

The primary overhead field associated with the OPU is the payload structure identifier (PSI). This is a 256-byte multiframe whose first byte is defined as the payload type (PT). The remaining 255 bytes are currently reserved. The other fields in the OPU overhead are dependent on the mapping capabilities associated to the OPU. For an asynchronous mapping (the client signal and OPU clock are different) justification control (JC) bytes are available to Application Note 153Telecom Test and Measurement compensate for clock rate differences. For a purely synchronous mapping (client source and OPU clock are the same), the JC bytes become reserved. Further details on mapping are available in ITU G.709.

 

 

QUESTION 133

When will the primary processor core dump run in case of a switchover?

 

A.

never takes place

B.

periodically

C.

during switchover

D.

after switchover

E.

before switchover

 

Correct Answer: D

Explanation:

In networking devices with redundant processors, the Post-Switchover Core Dump feature uses better software communication techniques between redundant processors to allow the switchover to occur before dumping core information. Not having to wait for dump operations effectively decreases the switchover time between processors. The newly active primary processor runs the core dump operation after switchover.

Reference: http://www.cisco.com/en/US/docs/ios/12_0st/12_0st18/feature/guide/coredump.html

 

 

QUESTION 134

Which of the following is reported in the LMI regular status polling? (Choose three.)

 

A.

Addition or Deletion of PVC.

B.

PVC status (active or inactive).

C.

Link integrity.

D.

None of the other alternatives apply.

 

Correct Answer: ABC

 

 

QUESTION 135

Which statement about Frame Relay is not true?

 

A.

Static mapping is used when the remote router does not support Inverse ARP.

B.

Frame Relay Inverse ARP requires LMI capability to construct an address to the DLCI mapping table on the router.

C.

Frame Relay Inverse ARP is disabled by default in Cisco IOS Software for all protocols that are enabled on the physical interface.

D.

Inverse ARP does not work when LMI is disabled.

E.

Frame Relay provides forward and backward congestion notification messages.

 

Correct Answer: C

 

 

QUESTION 136

Which four statements about Ethernet virtual circuit (EVC) infrastructure are true? (Choose four.)

 

A.

EVC infrastructure is a Layer 3 platform-independent routing architecture that supports IP over Ethernet services.

B.

Ethernet flow point (EFP) is configured on the main interface.

C.

Feature commands like MQC-based QoS policies can be specified.

D.

EVC infrastructure is a Layer 2 platform-independent bridging architecture that supports Ethernet services.

E.

Each Ethernet flow point (EFP) matches a predefined VLAN tag-based criteria.

F.

Ethernet flow point (EFP) is configured on the VLAN interface.

 

Correct Answer: BCDE

Explanation:

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SY/configuration/guide/ethernet_virtual_connection.html#wp1050309

http://www.cisco.com/en/US/docs/switches/metro/me3600x

 

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QUESTION 137

What are the benefits of using TCAM technology in high-end routing products? (Choose two.)

 

A.

Simplified configuration

B.

Lower maintenance cost

C.

Deterministic performance

D.

Longer uptime

E.

Lower power consumption

 

Correct Answer: CD

 

 

QUESTION 138

What features set is most frequently used to prevent hackers from flooding a port with MAC- addresses?

 

A.

BPDU Guard

B.

802.x

C.

Port Security

D.

Storm Control

 

Correct Answer: C

 

 

QUESTION 139

Which two statements are true about DPT/RPR?

 

A.

DPT/RPR uses a bi-directional ring consisting of two symmetric counter rotating fibre rings.

B.

DPT/RPR is defined in the IEEE 802.17 standard and it uses Token Bucket system to avoid collisions on the fiber.

C.

DPT/RPR can be deployed in the Core of the SP networks where point-to-point POS links are used to make best use of the Bandwidth.

D.

In DPT/RPR rings, data packets can be sent in one direction (downstream) and the corresponding control packets in the opposite direction (upstream), thus using both fibres concurrently to maximize bandwidth.

 

Correct Answer: AD

Explanation:

SONET/SDH is the accepted transport architecture.

The key building block is the twin optical fiber ring forming point-to-point connections that are “nailed up” between several SONET/SDH add-drop multiplexers (ADM).

The twin fiber rings in SONET/SDH ring run in parallel, one is the working ring carrying the communication traffic. The other is the protection ring acting as a backup in the event of cable failure or failure of an ADM node.

SONET/SDH provides good quality performance monitoring and failure protection information which also travel along the ring.

The exclusive use of one ring for data and the other for protection means one ring is fully utilized and the other ring is virtually redundant, awaiting the unlikely event of a failure. This, of course, is not the most efficient use of fiber, especially given the considerable cost to lay fiber.

 

 

QUESTION 140

ATM carries IP and PPP information with ATM cells. What ATM adaptation Layer is used when an ATM cell carries IP packets and PPP frames?

 

A.

AAU2

B.

AAL3

C.

AAL4

D.

AAL5

 

Correct Answer: D

 

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