QUESTION: 29

You are designing an AWS Direct Connect solution into your VPC. You need to consider requirements for the customer router to terminate the Direct Connect link at the Direct Connect location.
Which three factors that must be supported should you consider when choosing the customer router? (Choose three.)

802.1q trunking
802.1ax or 802.3ad link aggregation
OSPF
BGP
single-mode optical fiber connectivity
1-Gbps copper connectivity

Answer(s): A,D,E

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QUESTION: 30

Your company uses an NTP server to synchronize time across systems. The company runs multiple versions of Linux and Windows systems. You discover that the NTP server has failed, and you need to add an alternate NTP server to your instances.

Where should you apply the NTP server update to propagate information without rebooting your running instances?

DHCP Options Set
instance user-data
cfn-init scripts
instance meta-data

Answer(s): C

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QUESTION: 31

Your company has set up AWS Direct Connect to connect on-premises to an Amazon VPC instance. Two Direct Connect connections terminate at two different Direct Connect locations. You are using two routers, R1 and R2, at your end (one of each Direct Connect connection). R1 and R2 do NOT have connectivity between them. Both routers advertise the same routers over BGP to the VGW. You have a stateful firewall on each router. The routers drop some of the traffic coming from the VPC.
Which two actions should you take to fix this problem? (Choose two.)

Use BGP AS prepend attribute to prepend additional AS numbers while advertising routers from R1 to VGW.
Use BGP local preference attribute to assign R1 to a lower local preference number than R2
Use BGP local preference attribute to assign R1 a higher local preference number than R2.
Use BGP MED attribute to assign a higher MED value to the routes advertised R1 to VGW.
Use BGP MED attribute to assign a higher MED value to the routes advertised from R2 to VGW.

Answer(s): A,C

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QUESTION: 32

An organization will be expanding its current network design. When fully built out, there will be 99 VPCs spread across 11 AWS accounts (9 VPCs per account). There is currently an AWS Direct Connect connection into one account with 9 VPCs, each with a virtual network interface (VIF) per VPC.
Which of the following designs will minimize cost while allowing the organization to expand?

Order 10 new Direct Connect connections, one from each of the accounts that will be provisioned. Create private VIFs in each account. Attach one private VIF per VPC.
Create a public VIF on the Direct Connect connection. Leverage the public VIF to create a VPN connection to each VPC.
Create hosted private VIFs in the existing account. Connect a private VIF to an AWS Direct Connect gateway in each account. Connect the gateway in each account to the VPCs.
Create a transit VPC in the existing account that consists of two routers in separate Availability Zones. Connect each VPC to the two routers in the transit VPC by using VPN.

Answer(s): D

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QUESTION: 32