169.254.0.100 is an IP address which would MOST likely come from which of the following?

The corporate head office has assigned the subnet of 10.1.100.0/24 to a network technician. The technician wants to create subnets for the finance department, human resources, and IT. Given the following device counts:
Finance: 70 devices
Human resources: 38 devices
IT: 16 devices
Which of the following outlines how the technician should allocate the address space given?

A network engineer planning for wireless connectivity in large office building. Currently, the office building contains both legacy and newer devices.
Which of the following wireless network routers should engineer select for the fastest throughput for all wireless devices in the office building?

A user is unable to print to a network printer. Which of following is the FIRST step that a technician should take to troubleshoot the issue?

A network administrator is reviewing the following output from a switch.

Which of the following attacks has occurred on the switch?