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Which two options describe the advantages of using DWDM over traditional optical networks? (Choose two.)

A.    Inherent topology flexibility with intelligent chromatic dispersion.
B.    Inherent topology flexibility and service protection provided without penalty through intelligent oversubscription of bandwidth reservation.
C.    Inherent topology flexibility with built-in service protection.
D.    Inherent topology flexibility with a service protection provided through a direct integration with an upper layer protocol.
E.    Ability to expand bandwidth over existing optical infrastructure.

Answer: AE

What two options are significant drivers for 5G in IoT networks? (Choose two.)

A.    Energy Efficiency
B.    Lower Latency
C.    Mass Connectivity
D.    Programmability
E.    Higher data rates

Answer: BC

Which two options are IoT use cases that require the low-latency and high reliability that 5G networks provide? (Choose two.)

A.    Sports and Fitness
B.    Smart Home
C.    Automotive
D.    Smart Cities
E.    Industrial Automation
F.    Health and wellness

Answer: CE

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

Which two options are benefits of using Topology Independent Loop-Free Alternate in WAN design? (Choose two.)

A.    It provides backup convergence for all topologies by avoiding the post-convergence path.
B.    It maximizes the network utilization by load-sharing across low bandwidth and edge links while IGP convergence is in progress.
C.    No additional protocols are required in the MPLS network because it uses LDP labels to signal the backup path.
D.    Although it requires enabling segment routing, SR does not have to be activated as the preferred forwarding method.
E.    It can provide backup paths for IPv4, IPv6 and LDP traffic.

Answer: AE

Which two options are potential problems with route aggregation? (Choose two.)

A.    Maintaining host IP addresses during migrations
B.    Route flapping
C.    Suboptimal routing
D.    Topology hiding
E.    Asymmetric routing
F.    Prefix hijacking

Answer: CE

In an OSPF network with 20 routers connected together with Ethernet cabling , which topology typically takes the longest to converge?

A.    Full mesh
B.    Ring
C.    Squared
D.    Triangulated
E.    Partial mesh

Answer: B

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

Which three network management requirements are common practices in network design? (Choose three.)

A.    Collect RMON poll information for future regression analysis.
B.    Ensure that all network devices have their clocks synchronized.
D.    Collect SNMP poll information for future regression analysis.
E.    Validate data plane health, application and services availability with synthetic traffic.
F.    Capture both ingress and egress flow-based packets. While avoiding duplications of flows.

Answer: BCD

A customer requests that you determine how much of their remote branch traffic into a central data center is related to a call manager that resides in the data center. Which solution do you recommend?

A.    Enable NetFLow on branch routers.
B.    Enable netFlow on central data center routers.
C.    Perform SNMP polling of central data center routers.
D.    Perform SNMP polling of branch routers.
E.    Create an ACL on the local call manager switch with logging enabled.
F.    Span traffic from the switch port on the call manager to a data analyzer.

Answer: B

As network designer, which option is your main concern with regards to virtualizing multiple network zones into a single hardware device?

A.    Fate sharing
B.    CPU resource allocation
C.    Congestion control
D.    Security
E.    Bandwidth allocation

Answer: A

You are reviewing a new data center design for a customer. They chose to leverage a tunnel-based overlay technology for quick deployment and multitenant security. Which design concern can affect the availability across the data center?

A.    Nonoverlapping IP address space between the overlay networks.
B.    MTU size on the underlay links.
C.    Review of comman paths on the underlay links.
D.    Paper placement of STP root bridge in overlay networks.

Answer: B

Which three items do you recommend for control plane hardening of an infrastructure device? (Choose three.)

A.    To enable unused services
B.    Warning banners
C.    Routing protocol authentication
D.    Control Plane Policing
E.    Redundant AAA servers
F.    SNMPv3

Answer: CDF

Which native mechanism does OSPF use to prevent loops in MPLS VPNs?

A.    CE devices that run OSPF set the DN bit toward the PE router.
B.    PE devices that run OSPF clear the DN bit toward the CE router.
C.    CE devices that run OSPF clear the DN bit toward the PE router.
D.    Creation of PE to PE OSPF sham link across the MPLS-created super backbone.
E.    PE routers verify OSPF domain IDs used by CE OSPF processes.
F.    PE devices that run OSPF set the DN bit toward the CE router.

Answer: F

Your client is considering acquiring a new IPv6 address block so that all Ethernet interfaces on the network receive addresses based on their burned-in hardware addresses, with support for 600 VLANs. Which action do you recommend?

A.    Acquire a new /60 IPv6 network and subnet it into /70 networks, one per VLAN.
B.    Acquire a new /58 IPv6 network and subnet it into /64 networks, one per VLAN.
C.    Acquire a new /60 Ipv6 network and subnet it into /68 networks, one per VLAN.
D.    Acquire a new/54 IPv6 network and subnet it into /64 networks , one per VLAN.

Answer: D

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

A healthcare customer requested that health statistics from their infrastructure devices are to be sent over their service provider MPLS network. Which protocol must be enabled?

A.    SNMPv3
B.    Syslog TLS
C.    syslog
D.    SNMPv2
E.    SSH

Answer: A

Which two application requirements are mandatory for traffic to receive proper treatment when placed in the priority queue? (Choose two.)

A.    WRED drop treatment
B.    Small transactions (HTTP ?like behavior)
C.    Tolerance to packet loss
D.    Intolerance to jitter
E.    TCP based application

Answer: CD

Which two options must be part of your network design to support dynamic mutual redistribution between multiple OSPFv2 and IS-IS boundaries, to avoid suboptimal routing? (Choose two.)

A.    Matching OSPF external routes
B.    Route aggregation
C.    Route tagging
D.    Route filtering
E.    Disabling IS-IS wide metrics

Answer: CD

Which two statements about AToM are true? (Choose two.)

A.    It encapsulates Layer 2 frames at the egress PE.
C.    AToM supports connecting different L2 technologies using interworking option.
E.    It provides support for L2VPN features on ATM interfaces.

Answer: CE

Which two functions are performed at the distribution layer of the three-layer hierarchical network design model? (Choose two.).

A.    Fault isolation
B.    QoS classification and marking boundary
C.    Fast transport
D.    Reliability
E.    Load balancing

Answer: AE


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