Chap 7 - PC

Uses an RF transmitter. May include such features as motion detection, scheduled recording, remote viewing, and automatic cloud storage.

Security Camera

Which of the following are characteristics of Bluetooth? (Select TWO.) -Red spectrum light waves -Line-of-sight transmission -2.4 GHz radio wireless -Ad hoc connections -5.75 GHz radio wireless

-2.4 GHz radio wireless -Ad hoc connections

What are two major concerns regarding IoT devices? (Select TWO.) -Availability -Short lifespan -Accessibility -Hacking -Privacy

-Hacking -Privacy

A technician is replacing a SOHO router and has configured DHCP to assign private IP addresses to hosts on the local network. These hosts can communicate with each other, but users can't browse the internet. Which of the following changes to the SOHO router is MOST likely to restore internet connectivity? A. Disable DHCP and configure the hosts with static IP addresses. B. Configure the SOHO router for NAT. C. Remove any QoS settings that give low priority to HTTP traffic. D. Update the firmware on the SOHO router.

B.

A customer is experiencing a sporadic interruption of their Wi-Fi network in one area of their building. A technician investigates and discovers signal interference caused by a microwave oven. The customer approves replacing the wireless access point that covers the area, but asks that the wireless speed also be increased. Which of the following Wi-Fi standards should the replacement device support to BEST fulfill the customer's needs? A. 802.11a B. 802.11g C. 802.11ac D. 802.11b

C.

A technician is tasked with preparing a conference room so that at least 20 guests will be able to wirelessly connect laptop computers to the company network. Which of the following network devices would be the BEST choice for this connectivity? A. Router B. Switch C. Access point D. Firewall

C.

A user pays for a retail purchase by placing a smart phone next to the merchant's reader. Which of the following mobile device connections is being used? A. MicroUSB B. Bluetooth C. Lightning D. NFC

D.

Which of the following is the maximum transmission speed for Bluetooth v3 and v4 devices? A. 11 Mbps B. 3 Mbps C. 1 Mbps D. 24 Mbps

D.

You have been contacted by OsCorp to recommend a wireless internet solution. The wireless strategy must support a transmission range of 150 feet, use a frequency range of 2.4 GHz, and provide the highest possible transmission speeds. Which of the following wireless solutions would you recommend? A. 802.11g B. 802.11a C. 802.11b D. 802.11n

D.

Drag the wireless networking technology on the left to its associated transmission distance limitation on the right. Each technology may be used more than once. Up to 30 meters in areas without interference.

Infrared

Easy solution for making small appliances, such as lamps, coffee makers, and toasters, smart.

Plug

Allows you to control hardwired lights, ceiling fans, fireplaces, small appliances, and garbage disposals.

Switch

Portable devices have a software-controlled switch that disables all wireless functionality. What is the name of this software-controlled switch?

airplane mode

A technician receives notification from a SOHO router manufacturer of a specific vulnerability that allows attackers to exploit SNMP traps to take over the router. The technician verifies the settings outlined in the notification. Which of the following actions should the technician take NEXT? A. Check for and apply firmware updates. B. Enable MAC filtering. C. Enable content filtering. D. Disable DHCP.

A.

A user on your network has been moved to another office down the hall. After the move, she calls you to complain that she has only occasional network access through her wireless connection. Which of the following is MOST likely the cause of the problem? A. The client system has moved too far away from the access point. B. The encryption level has been erroneously set back to the default setting. C. An SSID mismatch between the client and the server. D. An SSID mismatch between the client and the WAP. E.. The client has incorrect WPA2 settings.

A.

What is the maximum number of nodes Z-Wave allows on its mesh network? A. 232 B. 231 C. 322 D. 223

A.

Which frequencies does Zigbee operate on? A. 2.4 GHz, 900 MHz, and 868 MHz B. 2.7 GHz, 400 MHz, and 865 MHz C. 2.4 GHz, 500 MHz, and 818 MHz D. 1.4 GHz, 90 MHz, and 500 MHz

A.

Which of the following is used on a wireless network to identify the network name? A. SSID B. MAC address C. WEP key D. WPA2 passphrase

A.

You need a type of wireless connection that can transfer data between your phone, PDA, and laptop. You are transferring sensitive information. Which of the following would be the BEST choice? A. Bluetooth B. Cellular WAN C. Infrared D. Wireless Ethernet

A.

Which wireless standard can stream data at a rate of up to 54 Mbps using a frequency of 5 GHz? A. 802.11b B. 802.11n C. 802.11g D. 802.11a

D.

Which type of configuration would you use if you wanted to deploy 802.11n technology to communicate directly between two computers using a wireless connection? A. WEP B. WAP C. Ad hoc D. Infrastructure

C.

Which IEEE wireless standards specify transmission speeds up to 54 Mbps? (Select TWO.) -Bluetooth -802.11a -802.11g -802.11b -802.1x

-802.11a -802.11g

Which of the following are characteristics of the 802.11g wireless standard? (Select THREE.) -Backwards compatible with 802.11b devices -Backwards compatible with 802.11a devices -Operates in the 2.4 GHz range -Maximum bandwidth of 54 Mbps -Operates in the 5.75 GHz range -Maximum bandwidth of 11 Mbps

-Backwards compatible with 802.11b devices -Operates in the 2.4 GHz range -Maximum bandwidth of 54 Mbps

A portable computer connected to a printer with an infrared interface works fine inside your office. However, when you go outside, it works sporadically. Which of the following would BEST resolve this issue? (Select TWO). -Set the environment setting to outdoor mode in the BIOS. -Block direct and reflected sunlight from the pathway between the PC and the printer. -Move the printer closer to the computer. -Install Ferrite shielding on both the PC and printer power cords. -Install a Gamma Ray Spectrometer (GRS) to shield the interface.

-Block direct and reflected sunlight from the pathway between the PC and the printer. -Move the printer closer to the computer.

The 802.11ac wireless networking standard provides increased bandwidth and communication speeds by using which of the following technologies? (Select TWO). -Dual band transmission to allow data to be transmitted at two frequencies at the same time. -Peer-to-peer mode to allow each host to communicate directly with other hosts. -Channel bonding to combine more channels in the 5 GHz band to allow for up to 160-MHz-wide channels. -OFDM modulation to allow several parallel data channels to stream data. -MU-MIMO to allow multiple users to use the same channel.

-Channel bonding to combine more channels in the 5 GHz band to allow for up to 160-MHz-wide channels. -MU-MIMO to allow multiple users to use the same channel.

Which of the following locations will contribute the greatest amount of interference for a wireless access point? (Select TWO.) -Near exterior walls -In the top floor of a two-story building -Near DCHP servers -Near backup generators -Near cordless phones

-Near backup generators -Near cordless phones

Which of the following are antenna types that are commonly used in wireless networks? (Select TWO). -High EMI antenna -Low EMI antenna -Omnidirectional antenna -Directional antenna -Half-duplex antenna -Full-duplex antenna

-Omnidirectional antenna -Directional antenna

What are the two protocols used most often with IoT devices? (Select TWO.) -Zerg -Zbot -Zigbee -Zensys -Z-Wave

-Zigbee -Z-Wave

A technician is installing a new SOHO wireless router. Which of the following is the FIRST thing the technician should do to secure the router? A. Change the router's default password B. Adjust the radio power levels C. Press the WPS button D. Disable SSID broadcast

A.

A technician is installing a SOHO router at an after-school community center. The customer would like to keep children from accessing inappropriate while browsing the web. Which of the following actions would help accomplish this goal? A. Enable content filtering B. Update firmware C. Disable DHCP D. Disable SSID broadcast

A.

A technician is installing a network-enabled smart home control system in a SOHO. To access the system from the internet, which of the following configurations is MOST likely required on the SOHO router? A. Port forwarding B. NAT C. DHCP D. QoS

A.

A technician is installing a new SOHO wireless router in a home office. The customer wants to secure the wireless network so only a smartphone, tablet, and laptop can connect. Which of the following router settings should the technician change? A. Enable MAC filtering B. Disable DHCP C. Disable SSID broadcast D. Enable port forwarding

A.

While configuring a wireless access point device, a technician is presented with several security mode options. Which of the following options will provide the most secure access? A. WEP 128 B. WPA and AES C. WPA2 and TKIP D. WPA2 and AES E. WPA and TKIP

C.

You want to use a wireless keyboard and mouse with your laptop computer. Which method should you choose? A. USB B. IEEE 1394 C. Bluetooth D. PS/2 E. 802.11g wireless

C.

A user calls to report that she is experiencing intermittent problems while accessing the wireless network from her laptop computer. While talking to her, you discover that she is trying to work from the break room two floors above the floor where she normally works. Which of the following is the MOST likely cause of her connectivity problem? A. The wireless network access point on the user's normal floor has failed. B. The user is out of the effective range of the wireless access point on her floor. C. The user has not yet logged off and back on to the network while at her new location. D. The user needs a new IP address because she is working on a different floor. E. The user has not yet rebooted her laptop computer while at her new location.

B.

Drag the wireless networking technology on the left to its associated transmission distance limitation on the right. Each technology may be used more than once. Up to 10 meters for Class 2 devices.

Bluetooth

Drag the wireless networking technology on the left to its associated transmission distance limitation on the right. Each technology may be used more than once. Up to 100 meters for Class 1 devices.

Bluetooth

Can change colors, track motion, stream audio over Bluetooth, and double as a connected camera, but it's only smart when turned on. It doesn't work when turned off.

Bulb

A SOHO customer finds that their VoIP conversations frequently break up and become unintelligible. This happens most often when one person in the office streams video from the internet. Which of the following configuration changes on the SOHO router is MOST likely to improve VoIP performance? A. Create a DMZ and add the VoIP phone to it. B. Change DHCP to give the VoIP phone a static IP address. C. Change QoS settings to give VoIP traffic more priority. D. Forward UDP ports 5060 to 5065 to the VoIP phone.

C.

A user has purchased an external speaker to play music from a mobile device over a wireless connection. Which of the following actions is MOST likely needed for speaker connectivity. A. Configure tethering B. Disable airplane mode C. Enable pairing D. Create hotspot

C.

One of your customers wants to configure a small network in his home. The home has three floors, and there are computers on each floor. This customer needs to share files between computers, print to a centrally located printer, and have access to the internet. Which of the following print solutions would BEST meet this client's needs? A. Configure a Wi-Fi ad hoc network. B. Configure a Wi-Fi space network. C. Configure a Wi-Fi infrastructure network. D. Configure a Wi-Fi global area network.

C.

Which of the following is not an example of wireless networking communications? A. 802.11n B. Bluetooth C. DSL D. Infrared

C.

Which of the following wireless communication technologies can be described as follows? -Has a very limited transmission range of less than two inches -Used with credit cards and passports -Slower than other wireless technologies -Constantly emits a signal A. IEEE 1394 B. Bluetooth C. NFC D. Infrared in line-of-sight mode E. Infrared in diffuse mode

C.

A user calls to report that she is experiencing intermittent problems while accessing the wireless network from her laptop computer. She can access the network from her usual office, but today, she is trying to access the wireless network from a conference room, which is across the hall and next to the elevator. Which of the following is the MOST likely cause of her connectivity problem? A. The client computer is using the wrong channel number. B. The user has not yet rebooted her laptop computer while at her new location. C. SSID broadcast has been disabled. D. Interference is affecting the wireless signal. E. MAC filtering is preventing the computer from connecting.

D.

Which of the following is true when the DHCP setting is disabled in a wireless network? A. Wireless clients with specific MAC addresses are denied access to the network. B. Wireless clients must use the correct encryption key with its packets. C. Wireless clients must use the correct wireless access point identifier (SSID) to connect to the network. D. Wireless clients must use a static IP address within the correct IP address range to connect to the network.

D.

You are an IT technician for your company. Your boss has asked you to set up and configure a wireless network to service all of the conference rooms. Which of the following features lets you allow or reject client connections by hardware address? A. DHCP B. WEP C. SSID D. MAC address filtering

D.

You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 150 Mbps. In addition, the client already has a wireless telephone system installed that operates 2.4 GHz. Which 802.11 standard will work best in this situation? A. 802.11g B. 802.11b C. 802.11a D. 802.11n

D.

You are troubleshooting a client connectivity problem on an Ethernet network. The client system has intermittent connectivity to the network. You discover that the unshielded twisted pair patch cable runs 75 feet from the wall outlet and then passes through the ceiling and over several florescent light fixtures before reaching the client system. Which of the following is the MOST likely cause of the connectivity problem? A. The UTP cable does not support transmission distances of 75 feet without signal regeneration. B. Failed patch cable. C. Attenuation. D. EMI interference. E. Crosstalk.

D.

You have been asked to help a small office with a limited budget set up and configure a Windows network. There are only five computers in this office. In addition to the ability to share network resources, security is a top priority. Which of the following is the BEST course of action in this situation? A. Install a HomeGroup to provide a single login and simplify security and sharing. B. Install a HomeGroup to allow each computer to control which items are shared and who can access them. C. Install a WorkGroup to provide a single login and simplify security and sharing. D. Install a WorkGroup to allow each device to control what is shared and with whom.

D.

Uses a wireless protocol and a cryptographic key to execute the authorization process. It can also monitor access and send alerts related to the status of the device.

Door Lock

What is the maximum range of the Bluetooth 2.0 specification for Class 1 devices? A. 30 M B. 300 M C. 50 M D. 10 M E. 100 M

E.

Which data transmission rate is defined by the IEEE 802.11b wireless standard? A. 10 Mbps B. 150 Mbps C. 54 Mbps D. 2 Mbps E. 11 Mbps

E.

Which of the following wireless networking standards uses a frequency of 5 GHz and supports transmission speeds up to 1.3 Gbps? A. 802.11g B. 802.11a C. 802.11b D. 802.11n E. 802.11ac

E.

Uses voice recognition software and activates through a Wake Word or Hot Word.

Speaker/digital Assistant

Learns from your habits and schedule, allows you to control the climate in your home remotely, shows you energy consumption in real-time, and adjusts itself depending on ambient conditions.

Thermostat