1What does an inverter do?
Converts DC power to AC power; powers a screen's backlight.
2What is a port replicator?
A simple, small docking station using USB, usually without an expansion option.
3What is the Preferred Roaming List (PRL)?
Helps phones connect to the right tower; updated over the air.
4What is Mobile Device Management (MDM)?
Centralized control of company and personal devices, including policies and app access.
5Name two connectionless protocols.
DHCP, TFTP.
6Name two connection-oriented protocols.
DHCP, TFTP.
7What does a PoE injector do?
Adds power to an Ethernet cable.
8What is the power capacity of PoE (IEEE 802.3af)?
15.4 watts, 350 mA maximum current.
9How much power does PoE+ (IEEE 802.3at) provide?
25.5 watts, 600 mA maximum current.
10What is Software-Defined Networking (SDN)?
Turns physical networking into a cloud-managed software platform.
11What does SCADA stand for, and what is its purpose?
Supervisory Control and Data Acquisition; manages industrial machines in real time.
12What are embedded systems?
Answer: Purpose-built devices.
Purpose-built devices.
13List the private IPv4 address ranges.
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
14What is the APIPA range?
169.254.0.1 - 169.254.255.254.
15What is a TPM?
Trusted Platform Module; handles encryption, supported by the motherboard.
16What is a redundant power supply?
Two or more power supplies sharing the load, hot-swappable.
17What is jitter in networking?
Variable delay between frames, causing missed information.
18What is latency?
Delay between a request and a response.
19What is a Type 1 hypervisor?
Bare metal; runs directly on hardware.
20What is a Type 2 hypervisor?
Runs on an operating system as a software layer.