Cisco CCNA Basic Switching Concepts 5

Question 1

Which of the following correctly describes a broadcast domain in a switched network?

Accepted Answer

All devices in the same VLAN

Answer

All devices in the same VLAN share one broadcast domain; switches by default do not contain broadcasts between VLANs.

Question 2

A port security violation in 'restrict' mode results in which behavior?

Accepted Answer

Frames are dropped and a syslog/SNMP notification is generated

Answer

Restrict mode drops frames from violating MAC addresses and increments the security violation counter while sending syslog and SNMP notifications.

Question 3

Which store-and-forward switching characteristic makes it preferred in networks that require high reliability?

Accepted Answer

Error checking using CRC before forwarding

Answer

Store-and-forward switching receives the entire frame and performs a CRC check before forwarding, ensuring corrupted frames are never forwarded.

Question 4

Which command removes all dynamically learned MAC addresses from a Cisco switch's MAC address table immediately?

Accepted Answer

clear mac address-table dynamic

Answer

'clear mac address-table dynamic' immediately removes all dynamically learned entries from the MAC address table.

Question 5

What is the purpose of the 'switchport nonegotiate' command on a Cisco switch port?

Accepted Answer

Disables DTP so the port does not send DTP frames

Answer

'switchport nonegotiate' disables DTP negotiation, preventing the port from sending or responding to DTP frames.

Cisco CCNA Practice Test