Download New Updated (Spring 2015) Cisco 350-029 Actual Tests 141-150

By | April 26, 2015

Ensurepass

 

QUESTION 141

Which two statements about spanning tree path cost are true? (Choose two.)

 

A.

The path cost can be changed for an interface using the spanning-tree cost command.

B.

The path cost can be changed for an interface using the stp path-cost command.

C.

The STP default path cost depends on the interface speed.

D.

The STP default path cost is similar for all interface.

 

Correct Answer: AC

 

 

QUESTION 142

Two islands of IPv6 networks that are running ISIS(IPv6 IGP) must be connected using a tunnel over an IPv4 network. Which tunneling method can be used to achieve this goal?

 

A.

GRE tunnels

B.

automatic 6 to 4 tunnels

C.

ISATAP tunnels

D.

manual tunnels (RFC 2893)

 

Correct Answer: A

Explanation:

GRE has a protocol field thatidentifies the passenger protocol. GRE tunnels allow Intermediate System-to-Intermediate System (IS-IS) or IPv6 to be specified as a passenger protocol, which allows both IS-IS and IPv6 traffic to run over the same tunnel. If GRE did not have a protocol field, it would be impossible to distinguish whether the tunnel was carrying IS-IS or IPv6 packets. The GRE protocol field is why it is desirable that you tunnel IS-IS and IPv6 inside GRE

 

Reference

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-tunnel.html

 

 

QUESTION 143

What are the default values for GRE tunnel keepalive time and number of retries?

 

A.

5 seconds and 3 retries

B.

10seconds and 5 retries

C.

10 seconds and 3 retries

D.

20 seconds and 5 retries

E.

5 seconds and 5 retries

 

Correct Answer: C

Explanation:

This output shows the commands you use in order to configure keepalives on GRE tunnels.

Router# configure terminal

Router(config)#interfacetunnel0

Router(config-if)#keepalive 5 4

!— The syntax of this command is keepalive [seconds [retries]].

!— Keepalives are sent every 5 seconds and 4 retries.

!— Keepalives must be missed before the tunnel is shut down.

!— The default values are 10seconds for the interval and 3 retries.

 

 

QUESTION 144

An architecture that utilizes PPPoE deals with IP address allocation by what type of negotiation?

 

A.

NIS

B.

IPCP

C.

RADIUS

D.

LDAP

 

Correct Answer: B

 

 

QUESTION 145

Refer to the exhibit. Which two configurations are shown? (Choose two)

 

clip_image002

 

A.

L2TP tunnel configuration

B.

GRE tunnel configuration

C.

IPsec tunnel configuration

D.

tunnel keepalive mechanismconfiguration

 

Correct Answer: BD

 

 

QUESTION 146

Which three are the ATM cell header fields? (Choose three.)

 

A.

Cell loss priority (CLP)

B.

Discard eligibility (DE)

C.

Head error control (HEC)

D.

Generic flow control (GFC)

E.

Forward explicit congestion notification (FECN)

 

Correct Answer: ACD

Explanation:

The ATM cell header consists of the following fields: genericflow control (GFC), virtual path identifier (VPI), virtual channel identifier (VCI), payload type (PT), cell loss priority (CLP) and header error control (HEC).

 

 

QUESTION 147

Pick the 4 valid ATM Cell Header fields:

 

A.

GFC-4 bits of generic flow control

B.

Forward-explicit congestion notification(FECN)

C.

VCI-16 bits of virtual channel identifier

D.

CLP-1 bit of congestion loss

E.

HEC-8 bit of header error control

F.

ATM Discard Eligibility(DE) bit

 

Correct Answer: ACDE

Explanation:

The ATM cell header consists of the following fields: generic flow control (GFC), virtual path identifier (VPI), virtual channel identifier (VCI), payload type (PT), cell loss priority (CLP) and header error control (HEC).

 

 

QUESTION 148

What is the default maximum transmission uniton the Cisco router ATM interface?

 

A.

4470 bytes

B.

1516 bytes

C.

9288 bytes

D.

1500 bytes

E.

1492 bytes

 

Correct Answer: A

Explanation:

Why are MTUs 4470 Bytes?

Most Cisco ATM router interfaces use a default MTU size of 4470 bytes. This number was chosen to match exactlyFiber Distributed Data Interface (FDDI) and High-Speed Serial Interface (HSSI) interfaces for autonomous switching.

 

 

QUESTION 149

Which statement about ATM AAL5 over MPLS is true?

 

A.

It supports ATM signaling.

B.

It supports traffic shaping of packetsin MPLS to the ATM path.

C.

It supports ATM switched virtual circuits

D.

It supports fragmentation and reassembly.

E.

It supports AAL5 SDU switching.

 

Correct Answer: E

Explanation:

Reference

http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fsaal22.html#wp1015337 Restrictions

 

The following restriction apply to AAL5 over MPLS:

 

The AAL5 over MPLS feature supports only AAL5 SDU switching.

 

The following services are not supported with the AAL5 over MPLS feature:

 

ATM switched virtual circuits (SVCs)

ATM signaling

Fragmentation and reassembly

Traffic shaping of packets in the MPLS-to-ATM path

 

The instructions for configuring AAL5 over MPLS in this feature module apply only to the Cisco 12000 series router for 12.0(21)ST. Avoid using these instructions for any other platform or release.

 

 

QUESTION 150

Which type of AAL does ATM utilize to delive
r CBR traffic?

 

A.

AAL2

B.

AAL4

C.

AAL5

D.

AAL1

E.

AAL3

 

Correct Answer: D

Explanation:

An ATM Adaptation layer 1 or AAL1 is used for transmitting Class A traffic, that is, real-time,constant bit rate, connection oriented traffic (example- uncompressed audio and video). Bits arefed in by the application at constant rate and must be delivered to other end with minimum delay, jitter or overhead. The input is stream of bits without message boundaries. For this traffic, error detection protocols cannot be used since timeou
ts and retransmission causes delay but the missing cells are reported to the application, that must take its own action to recover from them.

 

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