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السؤال #1
A green data center is being deployed and a design requirement is to be able to readily scale server virtualization. Which IETF standard technology can provide this requirement?
A. data center bridging
B. unified fabric
C. Transparent Interconnection of Lots of Links
D. fabric path
عرض الإجابة
اجابة صحيحة: D
السؤال #2
An architect designs a multi-controller network architecture with these requirements: - Achieve fast failover to control traffic when controllers fail. - Yield a short distance and high resiliency in the connection between the switches and the controller. - Reduce connectivity loss and enable smart recovery to improve the SDN survivability. - Improve connectivity by adding path diversity and capacity awareness for controllers. Which control plane component of the multi-controller must be built to meet the r
A. control node reliability
B. controller stale consistency
C. control path reliability
D. controller clustering
عرض الإجابة
اجابة صحيحة: A
السؤال #3
How many fully established neighbour relationships exist on an Ethernet with five routers running OSPF as network type broadcast?
A. 5
B. 6
C. 7
D. 10
E. 20
عرض الإجابة
اجابة صحيحة: B
السؤال #4
Which two descriptions of CWDM are true? (Choose two)
A. typically used over long distances, but requires optical amplification
B. uses the 850nm band
C. allows up to 32 optical earners to be multiplexed onto a single fiber
D. shares the same transmission window as DWDM
E. Passive CWDM devices require no electrical power
عرض الإجابة
اجابة صحيحة: A
السؤال #5
Which two statements describe the hierarchical LAN design model? (Choose two)
A. It is a well-understood architecture that provides scalability
B. It is the best design for modern data centers
C. It is the most optimal design but is highly complex
D. It provides a simplified design
E. Changes, upgrades, and new services can be introduced in a controlled and stagged manner
عرض الإجابة
اجابة صحيحة: AE
السؤال #6
Which two application requirements are mandatory tor traffic to receive proper treatment when placed in the priority queue? (Choose two.)
A. small transactions (HTTP-like behavior)
B. WRED drop treatment
C. tolerance to packet loss
D. intolerance to jitter
E. TCP-based application
عرض الإجابة
اجابة صحيحة: C
السؤال #7
Which two conditions must be met for EIGRP to maintain an alternate loop-free path to a remote network? (Choose two.)
A. The Reported Distance from a successor is lower than the local Feasible Distance
B. The Reported Distance from a successor is higher than the local Feasible Distance
C. The feasibility condition does not need to be met
D. The Feasible Distance from a successor is lower than the local Reported Distance
E. A feasible successor must be present
عرض الإجابة
اجابة صحيحة: D
السؤال #8
A network design includes a long signaling delay in notifying the Layer 3 control plane that an interface has failed. Which two of these actions would reduce that delay? (Choose two.)
A. Increase network stability
B. Reduce the time for the network to reconverge
C. Increase the notification of interface flaps
D. Enable lower data link layer recovery systems to have an opportunity to restore the interface
عرض الإجابة
اجابة صحيحة: C
السؤال #9
Which option is a fate-sharing characteristic in regards to network design?
A. A failure of a single element causes the entire service to fail
B. It protects the network against failures in the distribution layer
C. It acts as a stateful forwarding device
D. It provides data sequencing and acknowledgment mechanisms
عرض الإجابة
اجابة صحيحة: D
السؤال #10
Company XYZ runs OSPF in their network. A design engineer decides to implement hot-potato routing architecture. How can this implementation be achieved?
A. Enable iBGP and apply prepend to ensure all prefixes will have the same length of the AS pathattribute value
B. Redistribute the external prefixes onto OSPF and ensure the total metric calculation includes onlythe ext value and the value is the same in all ASBRs
C. Enable OSPF load-balancing over unequal cost path
D. Redistribute the external prefixes onto OSPF and ensure that the total metric calculation includesexternal internal values
عرض الإجابة
اجابة صحيحة: C
السؤال #11
Two enterprise networks must be connected together. Both networks are using the same private IP addresses. The client requests from both sides should be translated using hide NAT (dynamic NAT) with the overload feature to save IF addresses from the NAT pools. Which design addresses this requirement using only one Cisco I OS NAT router for both directions?
A. This is not possible, because two Cisco IOS NAT routers are required to do dynamic NAT, withoverload in both directions
B. The ip nat inside and ip nat outside commands must be configured at the interfaces with theoverload option in both directions
C. The overload feature is the default and does not have to be configured
D. Two different NAT pools must be used for the ip nat inside source and the ip nat outside sourcecommands for the overload feature in both directions
E. The Nat Virtual interface must be used to achieve this requirement
عرض الإجابة
اجابة صحيحة: CD
السؤال #12
An MPLS service provider is offering a standard EoMPLS-based VPLS service to CustomerA providing Layer 2 connectivity between a central site and approximately 100 remote sites. CustomerA wants to use the VPLS network to carry its internal multicast video feeds which are sourced at the central site and consist of 20 groups at Mbps each. Which service provider recommendation offers the most scalability?
A. EoMPLS-based VPLS can carry multicast traffic in a scalable manner
B. Use a mesh of GRE tunnels to carry the streams between sites
C. Enable snooping mechanisms on the provider PE routers
D. Replace VPLS with a Layer 3 MVPN solution to carry the streams between sites
عرض الإجابة
اجابة صحيحة: BD
السؤال #13
You are designing a network running both IPv4 and IPv6 to deploy QoS Which consideration is correct about the QoS for IPv4 and IPv6?
A. IPv4 and IPv6 traffic types can use use queuing mechanisms such as LLQ, PQ and CQ
B. IPv6 packet classification is only available with process switching, whereas IPv4 packet classification is available with both process switching and CEF
C. IPv6 and IB/4 traffic types can use a single QoS policy to match both protocols
D. Different congestion management mechanisms need to be used for IPv4 and IPv6 traffic types
عرض الإجابة
اجابة صحيحة: C
السؤال #14
Company XYZ is in the process of identifying which transport mechanism(s) to use as their WAN technology. Their main two requirements are. - a technology that could offer DPI, SLA, secure tunnels, privacy, QoS, scalability, reliability, and ease of management - a technology that is cost-effective Which WAN technology(ies) should be included in the design of company XYZ?
A. Software-defined WAN should be the preferred choice because it complements both technologies, covers all the required features, and it is the most cost- effective solution
B. Internet should be the preferred option because it is cost effective and supports BFD, IP SL
C. andIPsec for secure transport over the public Internet
D. Both technologies should be use
E. Each should be used to back up the other one; where theprimary links are MPLS, the internet should be used as a backup link with IPsec (and vice versa)
F. MPLS meets all these requirements and it is more reliable than using the Interne G
عرض الإجابة
اجابة صحيحة: DE
السؤال #15
Company XYZ connects its sites over a private WAN. Their overlay network is running a DMVPN setup where the headquarters site is the hub. The company is planning on implementing multicast routing on the network. What should be used in the multicast routing design?
A. PIM dense mode with RP located at the hub
B. PIM sparse mode with RP located at each remote site
C. PIM sparse mode with RP located at the hub
D. PIM dense mode with RP located at each remote site
عرض الإجابة
اجابة صحيحة: C
السؤال #16
A BGP route reflector in the network is taking longer than expected to coverage during large network changes. Troubleshooting shows that the router cannot handle all the TCP acknowledgements during route updates. Which action can be performed to tune the device performance?
A. Increase the size of the hold queue
B. Increase the size of the large buffers
C. Decrease the size of the small buffers
D. Increase the keepalive timers for each BGP neighbor
عرض الإجابة
اجابة صحيحة: C
السؤال #17
You have been tasked with designing a data center interconnect to provide business continuity. You want to encrypt the traffic over the DCI using IEEE 802.1AE MACsec to prevent the deployment of any firewall or IPS. Which two interconnect technologies support MACsec? (Choose two.)
A. EoMPLS
B. MPLS Layer 3 VPN
C. DMVPN
D. GET VPN
E. KVPLS
عرض الإجابة
اجابة صحيحة: A
السؤال #18
The network designer needs to use GLOP IP address in order make them unique within their ASN, which multicast address range will be considered?
A. 239
B. 224
C. 233
D. 232
عرض الإجابة
اجابة صحيحة: BE
السؤال #19
You want to split an Ethernet domain in two. Which parameter must be unique in this design to keep the two domains separated?
A. VTP domain
B. VTP password
C. STP type
D. VLAN ID
عرض الإجابة
اجابة صحيحة: E

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