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An architect must create a QoS solution for a customer to ensure that a 40 Mbps Internet connection is shared between four subnets based on these requirements:

* Each subnet must receive no less than 10 Mbps of download bandwidth during peak traffic times.

* A subnet can use up to 40 Mbps during nonpeak traffic times if the other subnets are idle.

* Download traffic must never experience a delay.

Which solution must the architect choose?

A.

rate-limiting and shaping

A.

rate-limiting and shaping

Answers
B.

bandwidth percentage and policing

B.

bandwidth percentage and policing

Answers
C.

shaping and policing

C.

shaping and policing

Answers
D.

bandwidth percentage and rate-limiting

D.

bandwidth percentage and rate-limiting

Answers
Suggested answer: B

Explanation:

"Download traffic must never experience a delay."

This means we shouldn't be using Shaping at any point (since that puts packets into a buffer and sends them out later on when congestion has been reduced) Also: "Rate-limiting" is a bigger term and under it we have 2 things: "Policing" and "Shaping"

An engineer is designing a network for a customer running a wireless network with a common VLAN for all APs. The customer is experiencing unicast flooding in the Layer 2 network between the aggregation and access layers. The customer wants to reduce the flooding and improve convergence time. Which solution meets these requirements?

A.

Migrate all APs to a common Layer 2 access layer switch and run Layer 3 from the aggregation layer to all remaining access layer switches.

A.

Migrate all APs to a common Layer 2 access layer switch and run Layer 3 from the aggregation layer to all remaining access layer switches.

Answers
B.

Align HSRP primary and STP root bridges and reduce ARP timers to match CAM timers on the aggregation layer switches.

B.

Align HSRP primary and STP root bridges and reduce ARP timers to match CAM timers on the aggregation layer switches.

Answers
C.

Migrate to a Layer 3 access campus design if the APs can run on separate VLANs.

C.

Migrate to a Layer 3 access campus design if the APs can run on separate VLANs.

Answers
D.

Align HSRP primary and STP root bridges if the APs cannot run on separate VLANs.

D.

Align HSRP primary and STP root bridges if the APs cannot run on separate VLANs.

Answers
Suggested answer: D

Which node performs the LISP Map-Server and Map-Resolver functions in the Cisco SD-Access network architecture?

A.

control plane node

A.

control plane node

Answers
B.

fabric edge node

B.

fabric edge node

Answers
C.

border node

C.

border node

Answers
D.

intermediate node

D.

intermediate node

Answers
Suggested answer: A

An engineer must design a management network that enables SSH, NTP, FTP, and SNMP over the production network. The design requires the management of routers and switches that exist across different networks. Which feature must the design include?

A.

Management Plane Protection

A.

Management Plane Protection

Answers
B.

dedicated management console connection per device

B.

dedicated management console connection per device

Answers
C.

terminal server

C.

terminal server

Answers
D.

dedicated management VRF connection per device

D.

dedicated management VRF connection per device

Answers
Suggested answer: D

A network engineer must design a multicast solution to prevent the spoofing of multicast streams and ensure efficient bandwidth utilization. The network will be merged with another multicast domain in the future, and the merge must require minimum effort. Which two solutions meet the customer requirements? (Choose two.)

A.

PIM-SSM

A.

PIM-SSM

Answers
B.

IGMPv3

B.

IGMPv3

Answers
C.

IGMPv2

C.

IGMPv2

Answers
D.

PIM-SM

D.

PIM-SM

Answers
E.

MSDP

E.

MSDP

Answers
Suggested answer: D, E

Explanation:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16/imc-pim-xe-16-book/imc-msdp-im-pim-sim.html#GUID-4B201DB3-2C27-4F98-977A-A1AE9DC39C21MSDP is a mechanism to connect multiple PIM-SM domains. The purpose of MSDP is to discovermulticast sources in other PIM domains. The main advantage of MSDP is that it reduces thecomplexity of interconnecting multiple PIM-SM domains by allowing PIM-SM domains to use aninterdomain source tree (rather than a common shared tree).

Exhibit:

Refer to the exhibit. An engineer is designing a Layer 2 campus network. The design must support fast convergence and leverage as much bandwidth as possible between layers. Distribution switches do support VSS; unfortunately, not all routing protocols are available for use due to license limitations. Which solution must the engineer choose?

A.

EtherChannel

A.

EtherChannel

Answers
B.

MEC

B.

MEC

Answers
C.

RSTP

C.

RSTP

Answers
D.

ECMP

D.

ECMP

Answers
Suggested answer: B

Exhibit:

A.

Make R3 an L1L2 router.

A.

Make R3 an L1L2 router.

Answers
B.

Make R31 an L1 router.

B.

Make R31 an L1 router.

Answers
C.

Make Area 0 L2-only.

C.

Make Area 0 L2-only.

Answers
D.

Make R11 an L2 router.

D.

Make R11 an L2 router.

Answers
Suggested answer: A

Explanation:

ENSLD 300-420 cert guide page 117. When creating a backbone there should never be L1 routers between (L2 only, or) L1/L2 routers.


Refer to the exhibit. An architect is developing a solution to consolidate networks while retaining device redundancy. The routing protocol for the WAN routers must be open standard, ensure high availability, and provide the fastest convergence time. Which solution must the design include?

A.

both routers running EIGRP

A.

both routers running EIGRP

Answers
B.

one router running OSPFv2 and other OSPF v3

B.

one router running OSPFv2 and other OSPF v3

Answers
C.

one router running ISIS and other OSPF v3

C.

one router running ISIS and other OSPF v3

Answers
D.

both routers running OSPFv2

D.

both routers running OSPFv2

Answers
Suggested answer: A

Explanation:

EIGRP has a function called "EIGRP Ipv6" (But that can still be called "EIGRP")

Refer to the exhibit.

An architect is designing a network for a customer supporting a Wake-on-LAN application. Which solution must the architect choose?

A.

IP directed-broadcasts on R1

A.

IP directed-broadcasts on R1

Answers
B.

spanning-tree uplinkfast on SW1

B.

spanning-tree uplinkfast on SW1

Answers
C.

spanning-tree uplinkfast on SW2

C.

spanning-tree uplinkfast on SW2

Answers
D.

IP directed-broadcasts on R2

D.

IP directed-broadcasts on R2

Answers
Suggested answer: D

Explanation:

"IP directed broadcast" must be supported on the last router to the destination subnet. Since the sleeping PC's dont have IP adresses, the machines must be calles awake by broadcast that behaves like an unicast untill they reach the destination network. There the directed broadcast is handled like a proper broadcast to wake all WOL machines.

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91672-catl3-wol-vlans.html

Refer to the exhibit.

An architect must design an IPv6 migration solution for an enterprise customer to support these requirements:

* Clients will transition to the new IPv6 network, which provides NAT64 and IPv6 DNS resolution services, using the same DNS name that points to the IPv4 address.

* The service provider will create a client-facing IPv6 interface with a new IPv6 virtual address that points to the same IPv4 DNS server.

* The service provider will support clients that use global IPv6 addresses and encapsulate IPv4 packets into IPv6 tunnels.

Which two migration solutions must the architect choose? (Choose two.)

A.

Use dual-stack lite from the MPLS network to the IGR.

A.

Use dual-stack lite from the MPLS network to the IGR.

Answers
B.

Use IPv6 tunneling from the devices to the core MPLS network.

B.

Use IPv6 tunneling from the devices to the core MPLS network.

Answers
C.

Use dual-stack lite from the devices to the core MPLS network.

C.

Use dual-stack lite from the devices to the core MPLS network.

Answers
D.

Use NAT44/64 from the MPLS network to the IGR.

D.

Use NAT44/64 from the MPLS network to the IGR.

Answers
E.

Use NAT44/64 from the devices to the core MPLS network.

E.

Use NAT44/64 from the devices to the core MPLS network.

Answers
Suggested answer: C, D
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