Your company currently has a LAG to AWS with two 1Gbps connections. What is the best way to increase throughput on this LAG?
D
Add two 1Gbps connections to the LAG. DX does not support jumbo frames, a LAG only supports 4 connections, and adding a 10Gbps connection will be limited to the lowest speed of 1Gbps.
You have 4 Direct Connect connections from your datacenter. Site A advertises 172.16.0.0/16 AS 65000, Site B advertises 172.16.0.128/25 AS 65000 65000
65000, Site C advertises 172.0.0.0/8 AS 65000 and Site D advertises 172.16.0.0/24 AS 65000. Which site will AWS choose to reach your network?
B
172.16.0.128/25 AS 65000 65000 65000. The most specific prefix is always the first choice for BGP routing. Also, AWS will not accept an advertisement of a network less than /16.
You have a server that serves www, FTP, and mail. You need to access this server using www.yourname.com, ftp.yourname.com, and mail.yourname.com. You want to ensure an IP change results in the least number of other changes.
What is the best solution?
B
There is no ALIAS record for an EC2 instance, CNAME records pointed to the A record provided by AWS won't work because if the IP changes, the A record will change also. A PTR record is not appropriate here and cannot point to more than one record. Having three CNAME records and one A record will result in only having to change the A record if the IP changes.
Your company has a DX connection and you just added a new VPC and Private VIF to which you have connected to your DX link. You copied the settings from the other VPC to ensure it's the same. Once you connected the new VIF, you began seeing problems with connectivity to both VPCs.
You checked to make sure you didn't use the same CIDR with each VPC, so what could be the problem?
A
You can only have 1 instance of any VLAN ID.
You need to find the public IP address of an instance that you're logged in to. What command would you use?
D
curl http://169.254.169.254/latest/meta-data/public-ipv4
You have a hybrid infrastructure and you have configured your own DNS server on an EC2 instance in your 10.1.3.0/24 subnet. This subnet resides on the VPC
10.1.0.0/16. You need your data center to be able to resolve Route 53 queries in your private hosted zone. What do you need to do to accomplish this?
C
10.1.3.2 is not the DNS server. A DHCP option set is not needed since you are resolving AWS resources from on-premises not from a VPC and those instances are already configured to look to Route 53 DNS.
Your company has signed up to trial AWS WorkSpaces. You aren't sure you're going to keep it, but you want to try it out to see if it works for your organization of
112 users. You need to deploy it with as little work and up-front expense as possible while still allowing access to your Active Directory for authentication.
What two things should you do? (Choose two.)
AB
A VPN connection and an AD connector will allow you to get up and running without having to migrate users, setup expensive equipment or pay for another directory service.
You have two autoscaling groups in your VPC. One deploys servers that host the index of your website and another that deploys servers that host the images for your website. What three steps would you take to ensure the right servers are used for the right purpose? (Choose three.)
[1]
B. Create two target groups and associate them with each autoscaling group.
C. Configure a Classic Load Balancer
D. Configure an Application Load Balancer
ABD
A Classic Load Balancer does not support path-based routing rules
You have two VPCs that you've peered. You created a route for VPC A to get to an instance in VPC. You are unable to ping the instance. You have double checked your security groups and NACLs.
Why might this be?
A
Every route needs a return route for ICMP traffic.
You want to ensure you have the absolute best transmission rates inside and outside your VPC. You are concerned about the MTU settings. What is the best way to configure your T2 instances to ensure the best compatibility?
C
By using two ENIs, you ensure the right MTU goes to the proper destination.
