CompTIA A+ 220-1101 Objective Review
Questions and Answers Study Guide
Inverter - ANSWER>>- converts DC power to AC power
- provides power to a screen's backlight
Port Replicator - ANSWER>>- similar to a docking station, but simpler and smaller
- does not commonly have an expansion card option
- typically uses a USB connection
Preferred Roaming List (PRL) - ANSWER>>- allows your phone to connect to the
right tower
- can be updated over the air
Mobile Device Management (MDM) - ANSWER>>- manages company-owned and
user-owned devices (BYOD)
- centralized mobile device management with a specialized functionality (policies,
access control, application access, corporate email configuration)
- control the entire device or a partition
- no user configuration needed
Connectionless Protocols (Examples) - ANSWER>>- DHCP
- Trivial File Transfer Protocol (TFTP)
Connection-Oriented Protocols (Examples) - ANSWER>>- HTTPS
- SSH
PoE Injector - ANSWER>>adds power to an ethernet cable
, PoE - ANSWER>>- IEEE 802.3af
- original PoE standard
- now part of the 802.3 standard
- 15.4 watts DC power
- 350 mA maximum current
PoE+ - ANSWER>>- IEE 802.3at
- now also part of the 802.3 standard
- 25.5 watts DC power
- 600 mA maxiumum current
PoE++ - ANSWER>>-IEEE 802.3bt
- 51 watts and 600 mA maximum current for type 3
- 71.3 watts and 960 mA max current for type 4
- PoE with 10GBASE-T
Software-Defined Networking (SDN) - ANSWER>>- changes physical networking
infrastructure into a software based platform that can be used in the cloud
- has an infrastructure layer/data plane layer, control layer/control plane layer,
and application layer/management plane layer
Supervisory Control and Data Acquisition System (SCADA) - ANSWER>>-
responsible for control and management of industrial machines
- provides real-time information and system control
Embedded Systems - ANSWER>>purpose-built devices
Private IPv4 Address Range - ANSWER>>10.0.0.0 - 10.255.255.255, 172.16.0.0 -
172.31.255.255, 192.168.0.0 - 192.168.255.255
Automatic Private IP Addressing (APIPA) Range - ANSWER>>169.254.0.1 -
169.254.255.254
Questions and Answers Study Guide
Inverter - ANSWER>>- converts DC power to AC power
- provides power to a screen's backlight
Port Replicator - ANSWER>>- similar to a docking station, but simpler and smaller
- does not commonly have an expansion card option
- typically uses a USB connection
Preferred Roaming List (PRL) - ANSWER>>- allows your phone to connect to the
right tower
- can be updated over the air
Mobile Device Management (MDM) - ANSWER>>- manages company-owned and
user-owned devices (BYOD)
- centralized mobile device management with a specialized functionality (policies,
access control, application access, corporate email configuration)
- control the entire device or a partition
- no user configuration needed
Connectionless Protocols (Examples) - ANSWER>>- DHCP
- Trivial File Transfer Protocol (TFTP)
Connection-Oriented Protocols (Examples) - ANSWER>>- HTTPS
- SSH
PoE Injector - ANSWER>>adds power to an ethernet cable
, PoE - ANSWER>>- IEEE 802.3af
- original PoE standard
- now part of the 802.3 standard
- 15.4 watts DC power
- 350 mA maximum current
PoE+ - ANSWER>>- IEE 802.3at
- now also part of the 802.3 standard
- 25.5 watts DC power
- 600 mA maxiumum current
PoE++ - ANSWER>>-IEEE 802.3bt
- 51 watts and 600 mA maximum current for type 3
- 71.3 watts and 960 mA max current for type 4
- PoE with 10GBASE-T
Software-Defined Networking (SDN) - ANSWER>>- changes physical networking
infrastructure into a software based platform that can be used in the cloud
- has an infrastructure layer/data plane layer, control layer/control plane layer,
and application layer/management plane layer
Supervisory Control and Data Acquisition System (SCADA) - ANSWER>>-
responsible for control and management of industrial machines
- provides real-time information and system control
Embedded Systems - ANSWER>>purpose-built devices
Private IPv4 Address Range - ANSWER>>10.0.0.0 - 10.255.255.255, 172.16.0.0 -
172.31.255.255, 192.168.0.0 - 192.168.255.255
Automatic Private IP Addressing (APIPA) Range - ANSWER>>169.254.0.1 -
169.254.255.254
