Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 115 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01

Question #: 115
Topic #: 1

[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company is moving its record-keeping application to the AWS Cloud. All traffic between the company's on-premises data center and AWS must be encrypted at all times and at every transit device during the migration.

The application will reside across multiple Availability Zones in a single AWS Region. The application will use existing 10 Gbps AWS Direct Connect dedicated connections with a MACsec capable port. A network engineer must ensure that the Direct Connect connection is secured accordingly at every transit device.

The network engineer creates a Connection Key Name and Connectivity Association Key (CKN/CAK) pair for the MACsec secret key.

Which combination of additional steps should the network engineer take to meet the requirements? (Choose two.)

A. Configure the on-premises router with the MACsec secret key.
B. Update the connection's MACsec encryption mode to must_encrypt. Then associate the CKN/CAK pair with the connection.
C. Update the connection's MACsec encryption mode to should encrypt. Then associate the CKN/CAK pair with the connection.
D. Associate the CKN/CAK pair with the connection. Then update the connection's MACsec encryption mode to must_encrypt.
E. Associate the CKN/CAK pair with the connection. Then update the connection’s MACsec encryption mode to should_encrypt.

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Suggested Answer: AD 🗳️

by Balasmaniam at June 9, 2023, 12:14 p.m.

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lygf

Highly Voted 1 year, 11 months ago

Selected Answer: AD

According to AWS, you need to do the following 4 steps in order. 1. Create a new connection with MACsec support 2. Associate the CKN/CAK with the connection 3. Verify the connection status 4. Migrate traffic to new connection as appropriate When you first create the DX connection, the default encryption mode is should encrypt. You need to update it to must encrypt in step 3. There's no way to specify that during the creation of DX. https://aws.amazon.com/blogs/networking-and-content-delivery/adding-macsec-security-to-aws-direct-connect-connections/

upvoted 13 times

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woorkim

Most Recent 6 months, 1 week ago

Selected Answer: AD

https://aws.amazon.com/blogs/networking-and-content-delivery/adding-macsec-security-to-aws-direct-connect-connections/

upvoted 1 times

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JoellaLi

1 year, 2 months ago

You cannot modify a MACsec secret key after you associate it with a connection. If you need to modify the key, disassociate the key from the connection, and then associate a new key with the connection. https://aws.amazon.com/blogs/networking-and-content-delivery/adding-macsec-security-to-aws-direct-connect-connections/

upvoted 2 times