Download New Updated (Spring 2015) Cisco 350-029 Actual Tests 161-170

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QUESTION 161

Which three of these are types of Ethernet Virtual Connections (EVCs) in the MEF concept? (Choose three)

 

A.

rooted multipoint EVC (E-Tree)

B.

point-to-point EVC (E-Line)

C.

point-to-multipoint EVC (E-Tree)

D.

hub spoke EVC (E-Tree)

E.

multipoint-to-multipoint EVC (E-LAN)

 

Correct Answer: ABE

Explanation:

MEF Service

Ethernet Service Types can be used to create a broad range of Subscriber services. The service types are characterized by their required connectivity [10]. The following service types havebeen defined to date:

Ethernet Line Service (E-Line Service) uses a Point-to-Point EVC. The Ethernet LAN Service (E-LAN Service) uses a Multipoint-to-Multipoint EVC. The Ethernet Tree Service (E-TREE Service) uses a Rooted-Multipoint EVC.

 

 

QUESTION 162

Which two statements about 10 Gigabit Ethernet (10GE) are true? (Choose two.)

 

A.

10 Gigabit Ethernet does not support VLAN definition

B.

10 Gigabit Ethernet supports full duplex links, but does not support half duplex links.

C.

10 Gigabit Ethernet supports unshielded or shielded twisted-pair cable connections

D.

10 Gigabit Ethernet supports Carrier Sense Multiple Access with Collision Detection (CSMA/CD).

E.

10 Gigabit Ethernet supports optical fiber connections in single mode only. Multi mode is not supported.

 

Correct Answer: BC

 

 

QUESTION 163

What does the protocol field inside the PPP frame indicate?

 

A.

the protocol used to determine the authentication method

B.

the protocol used to identify the data in the Information field

C.

the protocol used to carrythe PPP frame

D.

the protocol used to decode the FCS field

E.

the protocol used to detect the number of padding bytes

 

Correct Answer: B

Explanation:

The Protocol field indicates the type of payload packet (e.g. LCP, NCP, IP, IPX, AppleTalk, etc.).

The Information fieldcontains the PPP payload; it has a variable length with a negotiated maximum called the Maximum Transmission Unit. By default, the maximum is 1500 octets. It might be padded on transmission; if the information for a particular protocol can be padded, thatprotocol must allow information to be distinguished from padding.

 

 

QUESTION 164

Which statement about the Link Control Protocol (LCP) is true?

 

A.

LCP is used for basic PPP link setup and operation.

B.

LCP is used for PPP CHAP authentication.

C.

LCP isused for PPP over ATM (PPPoA) setup.

D.

LCP is used for PPP over Ethernet (PPPoE) setup.

E.

LCP is used for PPP over Frame Relay (PPPoFR) setup.

 

Correct Answer: A

Explanation:

The LCP protocol:

Checks the identity of the linked device and either accepts or rejects the device determines the acceptable packet size for transmission searches for errors in configuration can terminate the link if requirements exceed the parameters.

 

 

QUESTION 165

Which four of these statements are restrictions for Frame Relay PVC bundles with QoS support for IP and MPLS? (Choose four)

 

A.

A PVC bundle will not come up unless all the precedence, DSCP, and EXP levels are configured in the bundle.

B.

A PVC bundle can perform precedence and DSCP matching at the same time

C.

A PVC bundle may containno more than sixteen PVCs

D.

A PVC can be in only one PVC bundle

E.

A PVC bundle cannot perform precedence and DSCP matching at the same time.

F.

A PVC bundle may contain no more than eight PVCs.

 

Correct Answer: ADEF

Explanation:

Reference:

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t13/feature/guide/ft_frbnd.html#wp102717

 

Restrictions for Frame Relay PVC Bundles with QoS Support for IP and MPLS

 

A PVC can be a part of one and only one PVC bundle.

A PVC bundle may contain no more than eight PVCs.

A PVC that is a bundle member cannot be used in any other capacity, For example a PVC bundle member cannot be configured in a map statement.

A PVC bundle cannotperform precedence and DSCP matching at the same time. If the wrong matching scheme is configured, unpredictable behavior will result.

A PVC bundle will not come up unless all the precedence, DSCP, or EXP levels are configured in the bundle.

Voice overFrame Relay (VoFR) is not supported on PVC-bundle members.

Fast switching over Frame Relay PVC bundles is not supported.

 

 

 

QUESTION 166

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

 

Correct Answer: D

 

 

QUESTION 167

What is the functionof the AJB bits on DS1 using Extended Super Frame (ESF)?

 

A.

It is used for signaling on-hook and off-hook status.

B.

It carries CRC information for error detection.

C.

It is used for a control and performance information.

D.

It is used for a frame’s synchronization and alignment.

 

Correct Answer: A

Explanation:

DS1 frame synchronization[edit source | edit]

See also: Synchronization in telecommunications

Frame synchronization is necessary to identify the timeslots within each 24-channel frame. Synchronization takes place by allocating a framing, or 193rd, bit. This results in 8 kbit/s of framing data, for each DS1.

Because this 8-kbit/s channel is used by the transmitting equipment as overhead, only 1.536 Mbit/s is actually passed on to the user. Two types of framing schemes are Super Frame (SF) and Extended Super Frame (ESF). A Super Frame consists of twelve consecutive 193-bit frames, whereas an Extended Super Frame consists of twenty-four consecutive 193-bit frames of data. Due to the unique bit sequences exchanged, the framing schemes are not compatible with each other. These two types of framing (SF, and ESF) use their 8 kbit/s framing channel in different ways.

 

 

QUESTION 168

Which statement is FALSE concerning Concatenation?

 

A.

It allows ITCM to send multiple upstreampackets in one single large burst.

B.

It reduces upstream data throughput.

C.

It can be enabled/disabled from CMTS on per upstream port basis if desired

D.

Concatenation activity on an interface can be checked by the show controller counters command

 

Correct Answer: B

 

 

QUESTION 169

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 170

What does UDLD stand for?

 

A.

UniDirectional Loop Detection

B.

Unspecified Distribution Label Detection

C.

Unified Distribution Label Direction

D.

UniDirectional Link Detection

 

Correct Answer: D

 

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