Course 2: Infrastructure for Home Automation (AI)
Gateway
The device that packets must be sent to in order to leave the LAN. Router typically functions as a gateway in residential installations
Service Set Identifier (SSID)
The name of the WLAN the device is connecting to
Internet Protocol (IP)
The principal communication protocol for routing packets of data across network boundaries
Transmission Control Protocol (TCP)
Tracks data sent to guarantee delivery of data and is received in proper order
Network Address Translation (NAT)
Translate an IP address of one subnet to another IP address to be used outside the subnet (192.168.1.10 in your home = 201.152.1.67 on the internet)
Domain Name System (Server or DNS)
Translates domain names into IP addresses (www.yahoo.com = 209.191.122.70)
A high bandwidth network is necessary fi video streaming is going on in the home. True/False
True
An example of devices needing a low bandwidth network are a remote telling a light to turn on or off. True/False
True
Control4 apps are available form the usual app store (iTunes, Google Play, Amazon). True/False
True
Control4 recommends you NOT set up port forwarding on a customer network. True/False
True
It's free for customers to use the Control4 app inside their homes but they must pay for 4Sight to access the home when they are away form the home network. True/False
True
Network issues are the most common cause for persistent home automation problems. True/False
True
Power Conditioners can protect components from surges. True/False
True
Sequencers restore power to components in a pre-programmed order. True/False
True
The Control4 app can receive push notifications based on events happening in the home. True/False
True
The Recommended Networking Gear is article 3 found in Control4's KnowledgeBase. True/False
True
UPS is an acronym for Uninterruptible Power Supply. True/False
True
When you first launch the COntrol4 customer app, you must be on the same network as the controller you are trying to connect to. True/False
True
Wireless devices that are farther away from the access point can slow down all the rest of the devices using that same access point. True/False
True
You should always change the default passwords on networking gear. True/False
True
You should put crucial devices like routers, modems, and controllers on a UPS. True/False
True
Dynamic Host Configuration Protocol (DHCP)
Used to automatically assign devices on the network IP addresses. DHCP clients ask the DHCP server for an address. Usually in the router Only one DHCP server per subnet - other wise there will be big problems
Multiple Input/Multiple Output Antennas (MIMO)
Used to improve range and performance of access points
WLAN
Wireless Local Area Networking
Bluetooth
wireless technology (2.4 GHz) for exchanging data over short distances
802.11b 802.11g 802.11a 802.11n 802.11ac
802.11b= 11 Mbps wireless protocol using 2.4 GHz 802.11g= 54 Mbps wireless protocol using 2.4 GHz 802.11a= 54 Mbps wireless protocol using 5 GHz. Many wireless products DO NO work with this one 802.11n=more range, faster speed (up to 300 Mbps, can be dual band, can use both 2.4 GHz and 5 GHz) 802.11ac=latest generation of WiFi. 5 GHz capable of between 500 Mbps and 1 Gbps transmission speeds
WiFi (Wireless Fidelity)
802.11x, WLAN, wireless networking
The purpose of a ZAP is to ______. A. broadcast Zigbee transmissions across the network B. transfer Zigbee messages to IP controlled devices C transfer messages from Director to the Zigbee network D. convert IP addresses to MAC addresses
A
Subnet
A portion of a network that has been segmented off through software or hardware
Port Forwarding
Allows remote computers to connect to a specific computer or service within a private local area network (LAN) DO NOT DO THIS
The two functions running in a controller that enable a Zigbee mesh are the Zserver and the ______. A. Wireless Access Point (WAP) B. Zigbee Access Point (ZAP) C. Zigbee Broadcast Point (ZBP) D. Navigator Access Point (NAP)
B
What is the major advantage of mesh network? A. End node devices have the ability to route signals to other devices in a mesh network B. If one device falls off-line, communication can still happen through alternative pathways C. Mesh networks provide much higher bandwidth than typical 'hub and spoke' networks D. Mesh networks are typically much less expensive than traditional networks
B
When a Zigbee device is identified, its permanent ______ address appears in the ID window. A. ZAP address B. MAC address C. IP address D. TCP/IP address
B
When identifying Zigbee devices, ID them ______. A. by identifying the end nodes first and then the router nodes B. from the center (nearest to the mesh controller) out C. from the outer edge (farthest away from the mesh controller) inwards D. in the System Design tab (in driver properties) in Composer Pro
B
In a Zigbee network, the Zserver ______. A. sends Zigbee transmission to identified router nodes only B. broadcasts Zigbee transmissions across the network C. transfers messages from Director to the Zigbee network D. sends Zigbee transmissions to identified end nodes only
C
Power Sequencers
Condition power and restore power to components in a programmed sequence
The best definition of a 'mesh controller' is ______. A. A controller in which only ZAP is functioning B. a controller in which only Zserver is functioning C. a controller in which Director and Zserver are functioning D. a controller in which Zserver and Zap are both functioning
D
The difference between router nodes and end nodes is that router nodes ______. A. accept message only intended for themselves B. can process much larger transmissions than end nodes C. can transfer both Zigbee and IP transmissions D. transfer messages to other router and end nodes
D
IPv6
Designed to allow the Internet to grow steadily, both in terms of the number of hosts connected and the total amount of data traffic transmitted
Wired Equivalent Privacy/WiFi Protected Access (WEP/WPA)
Encrypts data transmission on Wireless Networks. Think of these as the network password. WEP and WPA are easily hackable, stick with WPA2.
A dealer needs to know their customer's system password to connect to and service their system remotely. True/False
False
Infrastructure only has to do with a customer's home network. True/False
False
It is fine to place the access point in a rack, in a basement, that is surrounded by concrete walls. True/False
False
NAS is an acronym for Network Archive System. True/False
False
Using a spare wireless router as a dedicated access point will never cause any problems. True/False
False
WAN stands for Wide Access Network. True/False
False
Water and metal do not affect wireless signal strength. True/False
False
Wireless networks are always as fast as a wired network. True/False
False
Zigbee uses Bluetooth to send commands between devices. True/False
False
The minimum recommended distance between and access point and a controller is 2 meters. True/False
False (5 m)
Network attached storage (NAS)
One or more hard drives used for storing data and is available to devices on the network. The NAS could also be available outside the customer's home through an app or webpage login.
ZigBee
Open standard wireless protocol (802.15.4 using 2.4 GHz) that runs on low power radios and is ideal for sending simple commands around a house like telling a light to turn off or a door lock to unlock
Power Conditioner
Protect components from potentially damaging power dips and surges, often by powering units off
User Datagram Protocol (UDP)
Sends out data messages with no tracking, error correction or guarantee of delivery
HDBaseT
Technology for transmission of uncompressed high-definition video (HD), audio, power, home networking, Ethernet, USB, and some control signals, over a common category (Cat5e or above) cable with a standard connector (RJ45)