What is the implicit rule at the end of every Cisco ACL?

Every ACL ends with an implicit 'deny any' statement, meaning any traffic not explicitly permitted is dropped.

Where should an extended ACL be placed relative to the traffic source?

Extended ACLs should be placed as close to the source as possible to stop unwanted traffic early and conserve bandwidth.

What is the key difference between a standard ACL and an extended ACL?

Standard ACLs filter traffic based only on source IP address, while extended ACLs can filter based on source IP, destination IP, protocol, and port numbers.

What numbered range is used for standard IPv4 ACLs on Cisco routers?

Standard IPv4 ACLs use numbered ranges 1–99 and 1300–1999.

Which wildcard mask would you use in an ACL to match only the host 192.168.1.10?

0.0.0.0 — a wildcard mask of all zeros means every bit must match exactly, targeting a single host. You can also use the 'host' keyword.

← CCNA Cisco Networking Certification Study Materials

CCNA Network Security

Master essential Network Security concepts for the CCNA Cisco Networking Certification. This deck covers access control lists, AAA, VPNs, threat mitigation, and security best practices tested on the Cisco CCNA exam.

25 cards Intermediate Access Control Lists AAA and Device Access Security Threat Mitigation and Layer 2 Security VPNs and Encrypted Communications Common Threats and Security Concepts

Unlock Full Study Bundle — $39.99

This deck is part of the CCNA Cisco Networking Certification Study Bundle — $39.99 for all 7 decks

This deck is included in the CCNA Cisco Networking Certification Unlock

7 total decks, practice tests, study guides & more

Unlock Study Bundle — $39.99

Also Included in the Study Bundle

📝

Practice Tests

Timed multiple-choice quizzes that simulate the real exam

📖

Study Guides

Personalized summaries with key terms and exam tips

🧩

Match Game

Memory matching game to reinforce recall

Unlock All Study Modes — $39.99

Try These Cards

Click to flip. 5 of 25 cards.

Unlock the full study bundle →

Unlock the Full CCNA Cisco Networking Certification Study Bundle

All 7 decks, practice tests, study guides, and 5 personalized weak-area practice sessions.

Unlock Study Bundle — $39.99

CCNA Network Security

Also Included in the Study Bundle

Practice Tests

Study Guides

Match Game

Try These Cards

Want to keep studying?

Related Study Decks

CCNA Cisco Networking Certification — Complete Bundle

CCNA IP Addressing & Subnetting

CCNA Network Fundamentals

CCNA Network Services

CCNA Routing Protocols

CCNA Switching & VLANs

Unlock the Full CCNA Cisco Networking Certification Study Bundle