What is ip directed-broadcast?

Network Broadcast generated by a host which is not the part of the destination broadcast network. 


For example, host with ip 10.1.1.10/24 is generating traffic for 192.168.1.255/24. The intermediate routers are forwrding the packet as they do for unicast packet. It can lead to smurf(DoS) attacks and hence it is suggested to dsiable it. It is disabled from 12.x IOS version.


Destination ip never be 255.255.255.255 but a network broacast IP for example in 10.1.1.0/24 subnet, traffic for IP 10.1.1.255.

Configuration:-

Int Fa0/0
ip directed-broadcast


Disable directed broadcast:-

Int fa0/0
no ip directed-broadcast

Which IETF standard is the most efficient messaging protocol used in an IoT network?

CoAP is the IETF standard and most efficient messaging protocol used in an IoT network

Cisco ONE Enterprise cloud suite product portfolio

1. Cisco UCS Director 
2. Cisco Prime Service Catalog 
3. Cisco Virtual Application Container Services 
4. Cisco Intecloud Fabric for Business

Benefits of VXLANs over VLANs

Benifits of Vxlan over Vlan:-

1. VXLAN uses a 24-bit VNID to overcome the 4094 vlan scale limitation.
2. It provides a solution to extent layer 2 segments over a shared layer 3 routed network.
3. It provides better utilization of available network paths in the underlay infrastructure.
4. ECMP

What is ZigBee?

Zigbee protocol is best suited for wireless communication in an IoT deployment where sensors only have a power generating element (and do not have a battery).

What are cisco UCS director servce request execution states?

Below are the execution states:-

1. Scheduled
2. Running
3. Blocked
4. Completed
5. Failed

What is Report metadata?

It is a cisco UCS Director feature that enables us to view the REST API URL for every report display in cisco UCS Director.