NEW QUESTION 1
Which effect of designing a Layer 2 network using the PortFast fast feature with PVST+ is true?

• A. It shuts down the port when receiving the superior BPDU
• B. It accelerates the network convergence on the trunk uplinks
• C. In combination with BPDU filtering, it causes the switch port to stay in the forwarding state
• D. It moves the switch port directly to the forwarding state

Answer: D

NEW QUESTION 2
Which two statements about VXLAN are true? (Choose two)

• A. VXLAN is a Cisco proprietary solution
• B. VXLAN is an encapsulation method used to create a Layer 3 overlay network
• C. VXLAN can be used to enforce Layer 2 isolation in a multitenant infrastructure
• D. VXLAN uses the Spanning Tree protocol for loop prevention
• E. VXLAN overcomes the 802.1Q virtual LAN address space limitation

Answer: BE

NEW QUESTION 3
A retail company connects its 250 branches across the globe to the core using MPLS Layer 3 VPN. The company is planning to migrate its traditional telephony services to VoIp, in order to reduce the cost of international calls. What are the two primary concerns when implementing this migration? (Choose two)

• A. Jitter
• B. Call routing design
• C. SRST
• D. MTU
• E. Available bandwidth

Answer: AE

NEW QUESTION 4
Which mechanism enables small, unmanaged switches to plug into ports of access switches without
risking switch loops?

• A. PortFast
• B. UDLD
• C. Root guard
• D. BPDU guard

Answer: C

NEW QUESTION 5
You must make IGP redesign recommendations for a client that has old equipment, with low CPU power and memory, that they do not have budget replace. They are very concerned about CPU load on routers. They are using IS-IS as the IGP in a single l1 area and all routers are connected to each other with point-to-point links. Which method do you recommend to reduce or limit CPU overhead caused by IS-IS?

• A. Use mesh groups to limit flooding of LSAs
• B. Implement wide style metrics for IS-IS on all routers
• C. Select a router to act as a pseudowire to limit topology synchronization
• D. Divide the router into multiple areas and implement address summarization

Answer: A

NEW QUESTION 6
You are solving a design failure on a massive Hadoop cluster network that has an application with TCP incast behavior (also known as TCP Throughput collapse) affecting its many-to-one communications with packet loss at the last-hop network device. Which metric must be measured to ensure that the network provides the best performance for this application?

• A. Availability
• B. Bandwidth utilization
• C. Jitter values
• D. Buffer utilization

Answer: D

NEW QUESTION 7
Which two statements about AToM are true? (Choose two)

• A. It encapsulates Layer 2 frames at the egress PE
• B. When using AToM, the IP precedence filed is not copied to the MPLS packet
• C. AToM supports connecting different L2 technologies using interworking option
• D. The loopback address of the PE router must be either /24 or /32
• E. It provides support for L2VPN features on ATM interfaces

Answer: CE

NEW QUESTION 8
As a part of a network design, you should tighten security to prevent man-in-the-middle. Which two security options ensure that authorized ARP responses take place according to know IP-to-MAC address mapping? (Choose two)

• A. DHCP snooping
• B. ARP spoofing
• C. ARP rate limiting
• D. Dynamic ARP Inspection
• E. Port security

Answer: AD

NEW QUESTION 9
You are designing a solution to connect a primary data center to a disaster recovery site, The hosted
applications will be web and email servers that are provided through a virtualized environment. Which connectivity technology should you consider for this design?

• A. L2TPV3.
• B. VPWS.
• C. Point-To-Point GRE tunnels.
• D. VPLS.

Answer: A

NEW QUESTION 10
Which option describes a design benefit of root guard?

• A. It prevents switch loops caused by unidirectional point-to-point link condition on Rapid PVST+ and MST.
• B. It prevents switch loops by detecting on one-way communications on the physical port.
• C. It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops.
• D. It makes the port go immediately into the forwarding state after being connected.
• E. It prevents switched traffic from traversing suboptimal paths on the network.
• F. It does not generate a spanning-tree topology change upon connecting and disconnecting a station on a port.

Answer: E

NEW QUESTION 11
A network has several routers running IS-IS L1L2 mode on the same Ethernet segment. Which action
reduces to a minimum the number of IS-IS adjacencies in this segment?

• A. Define only the router on the segment to be DIS
• B. Change all routers connected to this segment to a single-level area
• C. Make the interface priority on the backup DIS lower than the primary DIS
• D. Change half the routers to be L1-only and other half to be L2-only on this segment

Answer: B

NEW QUESTION 12
Which three processes are part of the ITILv3 Service Operation? (Choose three)

• A. Release and deployment management
• B. Problem management
• C. Incident management
• D. Event management
• E. Service-level management
• F. Change management

Answer: BCD

NEW QUESTION 13
DRAG DROP
Classify the OSPF Fast Network Convergence technique by dragging the techniques on the left and dropping them into the corresponding categories on the right.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
Detection: carrier delay, dead timer
Processing: LSA arrival timer, incremental SPF

NEW QUESTION 14
A regional ISP is running MPLS TE. These tunnels are configured manually using paths. Which
technology centralizes the traffic engineering decisions to reduce operational complexity?

• A. BGP Link State
• B. DiffServ-TE
• C. TE autobandwidth
• D. Shared Risk link Group

Answer: C

NEW QUESTION 15
You are asked to design an RSVP-TEL LSP protection solution for a large service provider network
.Which traffic protection mechanism is highly scalable and ensure that multiple LPS always terminate at the same merge point?

• A. Shared explicit protection.
• B. Detour LSPs.
• C. 1:N protection.
• D. 1:1 protection.

Answer: C

NEW QUESTION 16
A Mobile Service Provider would like to design and deploy an Ethernet service which has similar
physical link failover/failback characteristics on the active/backup links as the APS/MSP SONET properties. Which Layer 2 service addresses should be considered to address this design feature?

• A. Port-Channel
• B. MLPPP
• C. Flex Link
• D. Ethernet Pseudowire

Answer: C

NEW QUESTION 17
Refer to the exhibit.

You are a network designer who is given these design requirements: Multicast services must be provided for Layer 3 VPN customers
The same forwarding technology must be used as Layer 3 VPN unicast packets Replication of multicast traffic is not allowed on the ingress PE
Which multicast VPN technology conforms to the design requirements?

• A. Multipoint-to-point LDP
• B. MSDP
• C. MLDP VPN
• D. Rosen Draft using LDP

Answer: C

NEW QUESTION 18
Which option lists the cloud service models?

• A. Internet as a Service, Platform as a Service, and Storage as a Service.
• B. Infrastructure as a Service, Platform as a Service, and Storage as a Service.
• C. Infrastructure as a Service, Platform as a Service, and Software as a Service.
• D. Internet as a Service, Product as a Service, and Storage as a Service.
• E. Internet as a Service, Platform as a Service, and Software as a Service.

Answer: C

NEW QUESTION 19
A DMVPN network is being deployed for 10 branch sites to connect to the central headquarters over the Internet. Each branch site connects to the internet via a 1.5 Mb/s ADSL line, and the headquarters connects to the Internet over a 100Mb/s circuit limited to 20 Mb/s by the service provider. Which QoS mechanism if any, do you recommend at the headquarters location?

• A. Rate-limiting the 100 Mb/s circuit to 20 Mb/s
• B. Applying hierarchical QoS with parent policy for the overall circuit and child policy for the spokes
• C. Traffic shaping the 100 Mb/s circuit to 20 Mb/s
• D. QoS is not required in this instance due to maximum traffic being received by the branches being 15 Mb/s

Answer: B

NEW QUESTION 20
In an Ethernet link containing five routers with OSPF network interface type configured as broadcast, how many OSPF adjacencies are established on this Ethernet link?

• A. 7
• B. 5
• C. 10
• D. 20
• E. 6

Answer: A

NEW QUESTION 21
When designing fast convergence on a network using loop-free alternate, on which two basis can the next-hop routes be precomputed? (Choose two)

• A. Per neighbor
• B. Per network type
• C. Per link
• D. Per prefix
• E. Per failure type

Answer: CD

NEW QUESTION 22
A BGP route reflector in the network is talking longer than expected to converge during network
changes. Troubleshooting has shown that the router cannot handle all the TCP acknowledgements during route updates. Which action can be performed to tune device performance?

• A. Increase the size of the large buffers
• B. Decrease the size of the small buffers
• C. Increase the keepalive timers for each BGP neighbor
• D. Increase the size of the hold queue

Answer: D

NEW QUESTION 23
A large enterprise network running IS-IS wants to deploy IGP traffic engineering, but they are concerned that the IS-IS default metrics are not flexible enough. Which feature must be enabled to provide traffic engineering with the minimum amount of changes?

• A. IS-IS Narrow Metrics
• B. IS-IS DIS
• C. IS-IS Wide Metrics
• D. IS-IS Multitopology

Answer: C

NEW QUESTION 24
An enterprise network has two core routers that connect to 200 distribution routers and uses full-
mesh iBGP peering between these routers as its routing method. The distribution routers are experiencing high CPU utilization due to the BGP process. Which design solution is the most effective?

• A. Increase the memory on the distribution routers
• B. Increase the memory on the core routers
• C. Implement route reflectors on the two core routers
• D. Increase bandwidth between the core routers
• E. Implement eBGP between the core and distribution routers

Answer: C

NEW QUESTION 25
Which aspect is a significant disadvantage of containers?

• A. Security
• B. Time to deploy
• C. Inefficiency
• D. Reduced operational overhead
• E. Resource consumption

Answer: A

NEW QUESTION 26
Which IEEE standard is commonly used at the data link layer for an access network, in an IoT environment?

• A. Wireless Regional Area Network
• B. Low-Rate Wireless Network
• C. Wireless Local Area Network
• D. Broadband wireless metropolitan Network

Answer: B

NEW QUESTION 27
DRAG DROP

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:

NEW QUESTION 28
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