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Viewing page 6 out of 13 pages
Viewing questions 76-90 out of questions
Questions # 76:

Click on the exhibit below.

Question # 76

Which ports will become root ports? (Choose 3)

Options:

A.

Bridge B 1/1/3

B.

Bridge B 1/1/2

C.

Bridge C 1/1/2

D.

Bridge C 2/1/1

E.

Bridge D 1/1/1

F.

Bridge D 1/1/3

G.

Bridge E 1/1/1

Questions # 77:

How can one ensure that a specific switch will be select as root in an STP network?

Options:

A.

Set the bridge priority to 131071.

B.

Set the bridge priority to 0.

C.

Set the bridge priority to 32768.

D.

Leave the bridge priority as the default.

Questions # 78:

The service mtu of a VPLS is set to 9100. What is the recommended MTU value that can be set for the access port assuming dot1q encapsulation?

Options:

A.

9100

B.

9104

C.

9108

D.

9122

E.

9126

Questions # 79:

Which of the following statements is false?

Options:

A.

VPLS is a bridged LAN service.

B.

VPLS provides L2 VPN services to CEs.

C.

VPLS is a point-to-point service where CEs are presented with point-to-point virtual circuits.

D.

CEs that are members of the same VPLS service instance communicate with each other as if they are connected via a bridged LAN.

Questions # 80:

Which of the following best describes the difference between VPWS and VPLS?

Options:

A.

Unlike VPLS. VPWS appears as a multi-hop network to the customers.

B.

Unlike VPLS, VPWS allows CEs that are member of the same service instance to communicate with each other as if they are connected via a bridged LAN.

C.

Unlike VPWS, VPLS allows customers to view the network as a routed network.

D.

Unlike VPWS, VPLS is a service where customer MAC addresses are learned.

Questions # 81:

Which PDU type is sent periodically over a link in the IEEE 802.3ah EFM as a method of keepalive?

Options:

A.

Event notification.

B.

Loopback control.

C.

Information.

D.

Variable request.

E.

Variable response.

Questions # 82:

In RSTP, how is the root bridge selected?

Options:

A.

The switch with the highest bridge-id is selected as root.

B.

The switch with the lowest bridge-id is selected as root.

C.

The switch with the highest MAC address is selected as root

D.

The switch with the lowest MAC address is selected as root.

Questions # 83:

What is the DA address used for in the Ethernet Header?

Options:

A.

MAC learning

B.

SA filtering

C.

Routing table population

D.

Frame forwarding

Questions # 84:

What are the benefits of a hierarchical VPLS architecture? (Choose 3)

Options:

A.

Increases scalability

B.

Reduces the FDB size within a VPLS instance

C.

Reduces replication and bandwidth utilization from the MDU device to the core network

D.

Easier to manage

E.

Reduces the routing table size

Questions # 85:

Why is MAC explosion a factor to be considered when designing a large VPLS network? (Choose 2)

Options:

A.

The time to relearn thousands of MAC addresses may result in excessive flooding or loss of packets.

B.

If the FDB reaches the limit, the router will discard frames.

C.

Discarding frames when the FDB limit is reached could deny SLA guarantees.

D.

It could take several seconds to relearn thousands of MAC addresses denying QoS/SLA guarantees.

Questions # 86:

Which function of the IEEE 802.1 ag is used for responding to CFM messages but not originating them?

Options:

A.

MEP

B.

MAP

C.

MIP

D.

MUP

Questions # 87:

Question # 87

Which of the following features can be enabled to eliminate MAC instability when using policy-based forwarding to redirect traffic to a Layer 2 DPI device?

Options:

A.

discard-unknown

B.

mac-move

C.

disable-learning

D.

enable-mac-stability

Questions # 88:

Which of the following OAM tools can be used as a VPLS topology discovery mechanism (Choose 2)?

Options:

A.

oam mac-ping

B.

oam mac-populate

C.

oamsvc-ping

D.

oam mac-trace

Questions # 89:

What is the name of the feature supported on the Alcatel-Lucent 7750 SR that prevents MAC explosion in large VPLS deployments?

Options:

A.

H-VPLS

B.

M-VPLS

C.

PBB

D.

MC-EP

Questions # 90:

Click on the exhibit below.

Question # 90

Based on the following configuration which VLANs will be managed by the management VPLS?

Options:

A.

VLANs 1-4094

B.

VLAN 0

C.

There is not enough information provided

D.

None, this is an invalid configuration

Viewing page 6 out of 13 pages
Viewing questions 76-90 out of questions
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