CCNA mock exam — short form — Quiz

Question 1 of 20

Which device segments collision domains but not broadcast domains?

Question 2 of 20

Network address of 172.16.45.130/27?

Question 3 of 20

Usable hosts in 10.0.0.0/30?

Question 4 of 20

A trunk's native VLAN traffic is sent:

Question 5 of 20

Which protocol elects a Designated Router (DR) on multi-access segments?

Question 6 of 20

What is OSPF's administrative distance on Cisco?

Question 7 of 20

Default Spanning Tree priority on Cisco:

Question 8 of 20

Which DHCP message does a client send AFTER receiving the OFFER?

Question 9 of 20

Which command enables LACP in 'active' mode on a Cisco port?

Question 10 of 20

An access port has PortFast enabled. What does BPDU Guard add?

Question 11 of 20

What is the EtherType for IPv6?

Question 12 of 20

Standard IPv6 subnet size for end-host networks:

Question 13 of 20

Which is a private IPv4 range per RFC 1918?

Question 14 of 20

TCP destination port for HTTPS:

Question 15 of 20

Which DSCP value is typically used for voice (EF)?

Question 16 of 20

Which is true about an extended ACL on Cisco IOS?

Question 17 of 20

Which protocol does 802.1X use to carry authentication?

Question 18 of 20

Which Wi-Fi security standard should you NOT deploy in 2026?

Question 19 of 20

Which Cisco command shows the MAC address table?

Question 20 of 20

Order OSI layers L1 → L7.

1. Session↑↓
2. Data Link↑↓
3. Application↑↓
4. Network↑↓
5. Transport↑↓
6. Presentation↑↓
7. Physical↑↓