Chapter 7.1 - 7.5 Questions
What type of device is required to create and infrastructure wireless network configuration?
A network access point
How does Bluetooth avoid interference with other Bluetooth devices in the area?
AFH finds other blutooth connections locally and avoids using those connections.
A host has an IP address of 169.254.0.2. What caused this?
APIPA
What's the difference between smart switches, bulbs and plugs? Which one would suit your needs better?
All devices connected to the internet so they can be controlled wirelessly.
Which wireless standards are typically backwards compatible with 802.11g?
B
Of the three Bluetooth device classifications, which transmits the farthest? Which is the most common class used by devices?
Class 1 with 100 meters. Probably class 2.
Which types of devices use NFC?
Credit cards, phones, cars, cash registers, charging docks, Passports, your dog
What solution should you try if all the computers on the network are having the same problem?
DHCP or DNS or the main internet in is busted.
What kind of problem is likely indicated when you can ping a device by the IP address, but not the host name?
DNS
What happens to the speed of wireless connection as you move away from the access point?
Degrades
How can IoT help you manage several aspects of your home environment remotely?
Everything is connected remotely, so you can change anything from anywhere so long as you have internet.
Two hosts report that they are using the same IP address. What should you do?
Fix the DHCP server, sounds like APIPA gave 2 computers the same IP
Once DHCP is disabled on a wireless access point, what three elements would an attacker have to configure to be able to connect?
IP address range, subnet mask and default gateway.
What is a smart speaker/home assistant? What can it connect to?
It helps control everything by voice and can connect to everything.
Which types of devices typically use Bluetooth wireless?
Keyboards, mice, headphones, cars
What additional information is shown when you use the /all switch with the ipconfig command?
MAC Address, DNS, DHCP and IP Lease.
How does MIMO differ from channel bonding?
MIMO uses multiple antennas for transmitting and receiving.
Why should default security settings be changed when dealing with wireless networking?
Most manufacturers make the default admin passwork/username the same on every device, making your basic settings known to everyone if you don't change them.
What advantages does Bluetooth offer that infrared does not?
Multiple device capabilities, better reliability,
How is NFC different from Bluetooth?
NFC has to be very very close to work, like 2 inches while Bluetooth could go as far as 100 feet.
What is the difference between a public IP address and a private IP address? What are the private IP address ranges?
Private IPs are used inside the subnet, 10.0.0.0 to 10.255.255.255 172.16.0.0 to 172.31.255.255 192.168.0.0 to 192.168.255.255
Is your hub compatible with Z-Wave or Zigbee?
Probably not.
In a SOHO Network, which types of devices are typically used to connect the location to the internet?
Router
Two access points are part of the same wireless network. Should they use the same channel or different ones, why?
Same one, its all the same network.
What is the purpose of MAC address filtering?
Security, barely.
What function does enabling NAT on the router provide for a SOHO network?
Similar to DHCP it gives devices their own network IP so they can communicate.
What guidelines should you consider when selecting the location of the access point to ensure signal strength and network access?
Somewhere overhead, in open space away from walls
What is the purpose of an SSID?
To be able to identify which network you need to connect to based on your location's infrastructure.
What are the advantages of turning off SSID broadcasting?
To hide the network from being discovered.
What is the first thing you should try if the link light is not lit? What should you try next?
Try the connection on both ends and then test another cable as it could be damaged or being interfered with.
What are typical infrared devices and applications?
Usually TV remotes and other remotes
Which authentication and security method should be used on a wireless network?
WPA2
