[2017-July-NEWS]Download 352-001 PDF from Braindump2go[81-90]

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QUESTION 81
Senior management wants you to evaluate the risks to your network of offering VPWS, VPLS, GRE, or other tunneling services to your fiber-connected client base. Clients indicate that they prefer to use Layer 2 switches as CEs. Which two tunneling services expose your network to minimal risk and meet the clients’ needs, including separation between providers and customer networks? (Choose two.)

A.    VPWS
B.    802.1Q
C.    GRE
D.    VPLS
E.    QinQ

Answer: AE

QUESTION 82
Network designers plan to interconnect two geographically separated data centers using an Ethernet-over-MPLS pseudowire. Within that design, the link between the sites is stable, there are no apparent loops in the topology, and the root bridges for the respective VLANs are stable and unchanging. What additional aspect of the design should be adjusted to mitigate the chance of connectivity issues to the peer data center when the connection takes place?

A.    Enable 802.1d on one data center, and 802.1w on the other.
B.    Ensure that the spanning tree diameter for one or more VLANs is not too large.
C.    Enable UDLD on the link between the data centers.
D.    Enable root guard on the link between the data centers.

Answer: B

QUESTION 83
You are the lead IP/MPLS network designer of a service provider called XYZ. You are leading a design discussion regarding IPv6 implementation in the XYZ MPLS network, using MPLS 6PE/6VPE techniques. Currently, XYZ provides IPv4 multicast services over an MPLS network by using MVPN, and would like to provide parallel IPv6 multicast services. Which three multicast solutions should be enabled? (Choose three.)

A.    native IPv6, only for multicast services
B.    MPLS 6PE/6VPE, because it provides IPv6 multicast support by default
C.    an overlay model using Layer 2 MPLS tunnels
D.    PIM-DM to enable IPv6 multicast in conjunction with MPLS 6PE/6VPE
E.    MVPN for IPv6 multicast service

Answer: ACE

QUESTION 84
Which mechanism should be added to a network design to identify unidirectional Spanning Tree Protocol failures through BPDU loss?

A.    UDLD
B.    loop guard
C.    BPDU guard?
D.    root guard

Answer: B

QUESTION 85
When creating a design plan for IPv6 integration, you decide to use stateless encapsulation of IPv6 packets into IPv4 tunnels between subscriber CPEs and a border relay. Which deployment technique allows for this functionality?

A.    6rd
B.    Dual-Stack Lite
C.    4rd
D.    DSTM

Answer: A

QUESTION 86
If a network design must support rapid convergence on half-duplex interfaces, which IEEE 802.1w capability should be used?

A.    root guard
B.    proposal-agreement handshake
C.    loop guard
D.    UplinkFast

Answer: B

QUESTION 87
You are designing a Group Encrypted Transport Virtual Private Network solution consisting of 30 group members. Which measure helps protect encrypted user traffic from replay attacks?

A.    counter-based anti-replay
B.    time-based anti-replay
C.    nonce payload
D.    RSA-encrypted nonce
E.    digital certificates

Answer: B

QUESTION 88
Tesla Radio GmbH is going to build a new research lab network based on a set of switches that would connect to their existing enterprise network. They are considering a design that would guarantee loop-free behavior within the set of switches. The design would also allow the group of switches to seem like a single switch to the enterprise network, because it is owned by a separate administrative group. Which Spanning Tree Protocol should be used to support the design requirements?

A.    IEEE 802.1w
B.    IEEE 802.1D
C.    IEEE 802.1s
D.    IEEE 802.1p

Answer: C

QUESTION 89
In an MPLS-VPN environment, what is the effect of configuring an identical set of route targets for a particular VRF, but then configuring nonidentical route distinguisher across multiple PE devices?

A.    The routes will be correctly handled by the control plane, but there will be instances where routes
take up twice as much memory.
B.    The routes will propagate to the remote PE, but the PE will never install them in its forwarding table.
C.    The routes will be rejected by the remote PE because they have a different RD than its routes.
D.    The routes will not even be sent to any remote PE with a different RD.

Answer: A

QUESTION 90
Refer to the exhibit. You are designing an IPv4 unicast Layer 3 VPN load-balancing solution. Which L3VPN feature needs to be configured on the PE routers to support the design requirement?
 

A.    nonmatching route distinguishers
B.    matching route target values
C.    disable split horizon on PE2 and PE3
D.    matching route distinguishers

Answer: A


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