A Network Administrator is troubleshooting an intermittent connectivity issue between two subnets, VLAN 20 and VLAN 30. They suspect a routing loop or a duplicate IP address might be the cause. The administrator wants to trace the Layer 3 path from the default gateway of VLAN
20 (SW-1) to a host in VLAN 30.
Which troubleshooting steps are most effective for diagnosing this issue? (Choose 2.)

A Network Operator is working on a converged network that carries voice, video, and data traffic.
Users are complaining about poor quality on their VoIP calls, such as jitter and dropped words, especially when large file transfers are happening on the network. What is the primary role of Quality of Service (QoS) in resolving this issue?

A Solutions Architect needs to explain the programmability options of AOS-CX to a customer's development team. The team wants to write applications that can react to network events in real time. Which toolset allows a developer to write a script, install it on the switch itself, and have that script subscribe to state changes in the switch's database to trigger automated actions?

Which type of interface is used for internal routing and connects a Layer 2 VLAN to the internal routing functions in a multi-layer switch?

Which IEEE standard defines the Link Aggregation Control Protocol (LACP)?