Explanation

Endpoint protection platforms (EPP) prevent endpoint security threats like known and unknown malware.
Endpoint detection and response (EDR) solutions can detect and respond to threats that your EPP and other security tools did not catch.
EDR and EPP have similar goals but are designed to fulfill different purposes. EPP is designed to provide device-level protection by identifying malicious files, detecting potentially malicious activity, and providing tools for incident investigation and response.
The preventative nature of EPP complements proactive EDR. EPP acts as the first line of defense, filtering out attacks that can be detected by the organization's deployed security solutions. EDR acts as a second layer of protection, enabling security analysts to perform threat hunting and identify more subtle threats to the endpoint.
Effective endpoint defense requires a solution that integrates the capabilities of both EDR and EPP to provide protection against cyber threats without overwhelming an organization's security team.

The command "crypto isakmp identity address 172.19.20.24" is not valid. We can only use "crypto isakmp identity {address | hostname}. The following example uses preshared keys at two peers and sets both their ISAKMP identities to the IP address.
At the local peer (at 10.0.0.1) the ISAKMP identity is set and the preshared key is specified:
crypto isakmp identity address
crypto isakmp key sharedkeystring address 192.168.1.33
At the remote peer (at 192.168.1.33) the ISAKMP identity is set and the same preshared key is specified:
crypto isakmp identity address
crypto isakmp key sharedkeystring address 10.0.0.1
The command "crypto isakmp identity address 172.19.20.24" is not valid. We can only use "crypto isakmp identity {address | hostname}. The following example uses preshared keys at two peers and sets both their ISAKMP identities to the IP address.
At the local peer (at 10.0.0.1) the ISAKMP identity is set and the preshared key is specified:
crypto isakmp identity address
crypto isakmp key sharedkeystring address 192.168.1.33
At the remote peer (at 192.168.1.33) the ISAKMP identity is set and the same preshared key is specified:
crypto isakmp identity address
crypto isakmp key sharedkeystring address 10.0.0.1
Reference:
The command "crypto enrollment peer address" is not valid either.
The command "crypto ca identity ..." is only used to declare a trusted CA for the router and puts you in the caidentity configuration mode. Also it should be followed by a name, not an IP address. For example: "crypto ca identity CA-Server" -> Answer A is not correct.
Only answer B is the best choice left.
The command "crypto isakmp identity address 172.19.20.24" is not valid. We can only use "crypto isakmp identity {address | hostname}. The following example uses preshared keys at two peers and sets both their ISAKMP identities to the IP address.
At the local peer (at 10.0.0.1) the ISAKMP identity is set and the preshared key is specified:
crypto isakmp identity address
crypto isakmp key sharedkeystring address 192.168.1.33
At the remote peer (at 192.168.1.33) the ISAKMP identity is set and the same preshared key is specified:
crypto isakmp identity address
crypto isakmp key sharedkeystring address 10.0.0.1
The command "crypto enrollment peer address" is not valid either.
The command "crypto ca identity ..." is only used to declare a trusted CA for the router and puts you in the caidentity configuration mode. Also it should be followed by a name, not an IP address. For example: "crypto ca identity CA-Server" -> Answer A is not correct.
The command "crypto enrollment peer address" is not valid either.
The command "crypto ca identity ..." is only used to declare a trusted CA for the router and puts you in the caidentity configuration mode. Also it should be followed by a name, not an IP address. For example: "crypto ca identity CA-Server" -> Answer A is not correct.
Only answer B is the best choice left.