# 8.2.5 Check Your Understanding – Wildcard Masks in ACLs Answers

1. Which wildcard mask would permit only host 10.10.10.1?

• 0.0.0.0
• 0.0.0.31
• 0.0.0.255
• 0.0.255.255
• 255.255.255.255

Explanation: The wildcard mask that would permit only host 10.10.10.1 is 0.0.0.0.

2. Which wildcard mask would permit only hosts from the 10.10.0.0/16 network?

• 0.0.0.0
• 0.0.0.31
• 0.0.0.255
• 0.0.255.255
• 255.255.255.255

Explanation: The wildcard mask that would permit only hosts from the 10.10.0.0/16 network is 0.0.255.255.

3. Which wildcard mask would permit all hosts?

• 0.0.0.0
• 0.0.0.31
• 0.0.0.255
• 0.0.255.255
• 255.255.255.255

Explanation: The wildcard mask that would permit all hosts is 255.255.255.255.

4. Which wildcard mask would permit all hosts from the 192.168.10.0/24 network?

• 0.0.0.0
• 0.0.0.31
• 0.0.0.255
• 0.0.255.255
• 255.255.255.255

Explanation: The wildcard mask that would permit all hosts from the 192.168.10.0/24 network is 0.0.0.255.

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