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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 5 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 5
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company uses a 4 Gbps AWS Direct Connect dedicated connection with a link aggregation group (LAG) bundle to connect to five VPCs that are deployed in the us-east-1 Region. Each VPC serves a different business unit and uses its own private VIF for connectivity to the on-premises environment. Users are reporting slowness when they access resources that are hosted on AWS.
A network engineer finds that there are sudden increases in throughput and that the Direct Connect connection becomes saturated at the same time for about an hour each business day. The company wants to know which business unit is causing the sudden increase in throughput. The network engineer must find out this information and implement a solution to resolve the problem.
Which solution will meet these requirements?

  • A. Review the Amazon CloudWatch metrics for VirtualInterfaceBpsEgress and VirtualInterfaceBpsIngress to determine which VIF is sending the highest throughput during the period in which slowness is observed. Create a new 10 Gbps dedicated connection. Shift traffic from the existing dedicated connection to the new dedicated connection.
  • B. Review the Amazon CloudWatch metrics for VirtualInterfaceBpsEgress and VirtualInterfaceBpsIngress to determine which VIF is sending the highest throughput during the period in which slowness is observed. Upgrade the bandwidth of the existing dedicated connection to 10 Gbps.
  • C. Review the Amazon CloudWatch metrics for ConnectionBpsIngress and ConnectionPpsEgress to determine which VIF is sending the highest throughput during the period in which slowness is observed. Upgrade the existing dedicated connection to a 5 Gbps hosted connection.
  • D. Review the Amazon CloudWatch metrics for ConnectionBpsIngress and ConnectionPpsEgress to determine which VIF is sending the highest throughput during the period in which slowness is observed. Create a new 10 Gbps dedicated connection. Shift traffic from the existing dedicated connection to the new dedicated connection.
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Suggested Answer: A 🗳️
by zaazanuna at March 18, 2023, 5:57 p.m.
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bogehad181
Highly Voted 1 year, 9 months ago
Selected Answer: A
A, can't upgrade DX
upvoted 9 times
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that1guy
Highly Voted 1 year, 9 months ago
Selected Answer: A
A, From: https://docs.aws.amazon.com/directconnect/latest/UserGuide/dedicated_connection.html > "You cannot change the port speed after you create the connection request. To change the port speed, you must create and configure a new connection."
upvoted 7 times
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Untamables
Most Recent 3 months, 2 weeks ago
Selected Answer: A
A The company has configured the Direct Connect connection stacked with LAG like the below AWS document in this scenario. It seems that there are 4 1-GB dedicated connections. https://docs.aws.amazon.com/directconnect/latest/UserGuide/lags.html Hence, you must monitor the entire traffic, not each dedicated connection traffic. Option C and D are wrong for this reason. https://docs.aws.amazon.com/directconnect/latest/UserGuide/monitoring-cloudwatch.html Option B is wrong. To change the port speed, you must create and configure a new connection. https://docs.aws.amazon.com/directconnect/latest/UserGuide/dedicated_connection.html
upvoted 3 times
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clphan
5 months, 1 week ago
Option A, - From https://docs.aws.amazon.com/directconnect/latest/UserGuide/dedicated_connection.html, you can't upgrade the current port speed. hosted connection support 1, 10, 100, 400. Current LAG 4GBPS mean that 4 connection / LAG => If need 10 seem need create a new because LAG require same port speed.
upvoted 1 times
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Raphaello
9 months, 1 week ago
Selected Answer: A
A is the correct answer. Need to create a new DX connection with the new speed.
upvoted 1 times
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patanjali
10 months, 1 week ago
Answer is A https://aws.amazon.com/blogs/networking-and-content-delivery/upgrading-aws-direct-connect-to-100-gbps-in-5-steps/
upvoted 1 times
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Marfee400704
11 months ago
I think that it's correct answer is A according to SPOTO products.
upvoted 1 times
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marfee
11 months, 1 week ago
I think that it's correcty answer is A.
upvoted 1 times
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MEDES
1 year, 3 months ago
A, From: https://docs.aws.amazon.com/directconnect/latest/UserGuide/dedicated_connection.html > "You cannot change the port speed after you create the connection request. To change the port speed, you must create and configure a new connection."
upvoted 1 times
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emmanuelodenyire
1 year, 8 months ago
Selected Answer: B
Option B suggests upgrading the bandwidth of the existing dedicated connection to 10 Gbps after reviewing the CloudWatch metrics for VirtualInterfaceBpsEgress and VirtualInterfaceBpsIngress to determine which VIF is sending the highest throughput during the period of slowness. This solution would help identify which VIF is causing the problem and increase the bandwidth to alleviate the issue.
upvoted 1 times
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ranac
1 year, 9 months ago
Selected Answer: B
since the company is already using a 4 Gbps Direct Connect dedicated connection with a LAG bundle, upgrading the bandwidth of the existing dedicated connection to 10 Gbps will be a more cost-effective solution than creating a new 10 Gbps dedicated connection.
upvoted 2 times
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slackbot
1 year, 9 months ago
Selected Answer: A
Obviously - DX connections cannot be upgraded. They can migrate the VIFs to the new DX conn
upvoted 2 times
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gpt_test
1 year, 9 months ago
Selected Answer: B
By reviewing the Amazon CloudWatch metrics for VirtualInterfaceBpsEgress and VirtualInterfaceBpsIngress, the network engineer can identify which VIF is causing the sudden increase in throughput. Upgrading the bandwidth of the existing dedicated connection to 10 Gbps will help mitigate the issue of slowness due to saturation, ensuring that resources hosted on AWS can be accessed more efficiently.
upvoted 1 times
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SIX
1 year, 9 months ago
A-Correct Answer In AWS Direct Connect, you cannot upgrade an existing 4 x 1Gbps connection to a 10Gbps connection. Instead, you will need to create a new 10Gbps connection and move the traffic to the new connection. https://repost.aws/questions/QUxprf4oUTRHyvs-SylrzNRw/can-aws-direct-connect-ports-be-upgraded-from-1-gbps-to-10-gbps.
upvoted 2 times
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ITgeek
1 year, 9 months ago
Selected Answer: B
AWS Direct Connect offers different port speeds, including 1 Gbps, 10 Gbps, and 100 Gbps. If you are currently using a 4 Gbps connection, it means you are likely using a 10 Gbps connection, but it is provisioned at 4 Gbps.
upvoted 1 times
Cappy46789
1 year, 9 months ago
There is LAG involved so likely 4 x 1Gbps connections
upvoted 2 times
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study_aws1
1 year, 9 months ago
A is correct. However, the apprpriate parameter will be VirtualInterfacePpsEgress and VirtualInterfacePpsIngress, as it is related to packet rate i.e. throughput
upvoted 1 times
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flowers00
1 year, 9 months ago
A - correct.
upvoted 2 times
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