HCIA-Datacom H12-811_V1.0 Syllabus Exam Questions Answers

Comprehensive Explanation: In Software-Defined Networking (SDN), the control plane (which makes decisions about where to send traffic) is separated from the forwarding plane (which actually moves packets to their destinations). This separation allows for centralized control and management of the network, enabling programmability and greater flexibility. SDN controllers manage the control plane, while individual switches or routers handle the forwarding of data.

MAC Address Analysis:

MAC addresses starting with 01-00-5E are reserved for IPv4 multicast by the IANA.

Why Other Options Are Incorrect:

A: The address is valid and reserved for multicast.

C: Broadcast addresses use FF-FF-FF-FF-FF-FF.

D: Unicast addresses are typically hardware-assigned and do not use this prefix.

References: HCIA-Datacom V1.0 Certification Guide, Chapter 7: Ethernet Basics.

Comprehensive Explanation: Fit APs (Access Points) are designed to work in conjunction with an Access Controller (AC). They rely on the AC for configuration, management, and control of their wireless services. Without an AC, a Fit AP cannot function independently or provide wireless services. This is in contrast to Fat APs, which have their own management capabilities and can operate independently.

SNMP Message Types:

get-request: Sent by the NMS to retrieve data from a device.

set-request: Used by the NMS to modify device settings.

get-response: Sent by the device in response to a get-request.

trap: Sent automatically by a device to notify the NMS of an event.

Why "trap" Is Correct:

If a registered event occurs (e.g., interface down, high CPU usage), the device proactively sends a trap to alert the NMS.

Conclusion:

Since traps notify abnormal events, the correct answer is A (trap).

References: HCIA-Datacom V1.0 Certification Guide, Chapter 7: SNMP and Network Monitoring.