Cisco CCNA Cisco CCNA IP Services

Question 1

Which protocol does a DHCP client use to initially discover a DHCP server on the network?

Accepted Answer

DHCP Discover (broadcast)

Answer

A DHCP client sends a DHCP Discover message as a broadcast to find available DHCP servers on the local network.

Question 2

What is the default lease time for a DHCP address assignment on a Cisco IOS router if not explicitly configured?

Accepted Answer

1 day

Answer

Cisco IOS DHCP server defaults to a 1-day (24-hour) lease time when no explicit lease duration is configured.

Question 3

Which NTP stratum number indicates that a device is directly connected to a reference clock (e.g., GPS)?

Accepted Answer

Stratum 1

Answer

Stratum 1 NTP servers are directly connected to a stratum 0 reference clock source such as GPS or atomic clocks.

Question 4

What is the well-known UDP port number used by SNMP agents to receive requests from an SNMP manager?

Accepted Answer

161

Answer

SNMP agents listen on UDP port 161 for polling requests sent by the SNMP manager.

Question 5

Which Syslog severity level number represents a 'Critical' condition on a Cisco device?

Accepted Answer

2

Answer

Syslog severity level 2 is Critical, indicating serious conditions that require immediate attention.

Cisco CCNA Practice Test