4.4.6 Check Your Understanding – Types of IPv4 ACLs Answers

1. Which ACL is capable of filtering based on TCP port number?

  • extended ACL
  • standard ACL

Explanation: A standard ACL filters on source IPv4 addresses. An extended ACL filters on source and destination IPv4 address, protocol, and TCP/UDP ports.

2. Which statement about ACLs is true?

  • Extended ACLs are numbered 1300 – 2699.
  • Named ACLs can be standard or extended.
  • Numbered ACLs is the preferred method to use when configuring ACLs.
  • Standard ACLs are numbered 1 – 199.

Explanation: Named ACLs can be standard or extended.

3. Where should a standard ACL be placed?

  • Standard ACL location is not important.
  • Standard ACLs should be placed as close to the destination as possible.
  • Standard ACLs should be placed as close to the source as possible.
  • Standard ACLs should be placed on serial interfaces.

Explanation: Standard ACLs should be located as close to the destination as possible.

4. Where should an extended ACL be placed?

  • Extended ACL location is not important.
  • Extended ACLs should be located as close to the destination as possible.
  • Extended ACLs should be located as close to the source as possible.
  • Extended ACLs should be located on serial interfaces.

Explanation: Extended ACLs should be located as close to the source as possible.

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