ACMT Networking & Connectivity 2 — Questions and Answers
Question 1: A customer wants to transfer files between two Macs at maximum speed. Which method should a technician recommend?
- AirDrop over Wi-Fi
- Thunderbolt cable in Target Disk Mode (Correct answer)
- USB 2.0 flash drive
- iCloud Drive upload/download
Correct answer: Thunderbolt cable in Target Disk Mode
Thunderbolt in Target Disk Mode provides up to 40 Gbps transfer speeds, far exceeding AirDrop's Wi-Fi bandwidth and external drive transfer rates.
Question 2: How does Target Disk Mode work on an Intel Mac?
- The Mac boots into a special OS and appears as a network share
- The Mac presents its storage as an external drive to another Mac connected via Thunderbolt or FireWire (Correct answer)
- The Mac streams its display to another Mac
- The Mac's CPU offloads processing to another Mac
Correct answer: The Mac presents its storage as an external drive to another Mac connected via Thunderbolt or FireWire
Target Disk Mode presents the Mac's internal storage as an external volume to a host Mac via a Thunderbolt or FireWire cable, allowing direct disk access.
Question 3: Which protocol does Bluetooth use to create a Personal Area Network (PAN) between devices?
- 802.11ac
- PAN profile over Bluetooth radio in the 2.4 GHz band (Correct answer)
- Zigbee
- Z-Wave
Correct answer: PAN profile over Bluetooth radio in the 2.4 GHz band
Bluetooth uses its Personal Area Network (PAN) profile to share internet or local connectivity between devices over the 2.4 GHz Bluetooth radio.
Question 4: A MacBook's Bluetooth is greyed out and unavailable after a repair. What is the most likely cause?
- macOS needs to be updated
- The Bluetooth antenna or its cable was damaged or disconnected during the repair (Correct answer)
- The customer's Apple ID is not signed in
- The SMC needs to be reset
Correct answer: The Bluetooth antenna or its cable was damaged or disconnected during the repair
Bluetooth sharing the same antenna or having a dedicated cable that can be damaged or disconnected during repair is the most common hardware cause of post-repair Bluetooth failure.
Question 5: Which macOS command flushes the local DNS cache to resolve domain name resolution issues?
- networksetup -flushroutes
- sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder (Correct answer)
- ping -flush 8.8.8.8
- ipconfig /flushdns
Correct answer: sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
On macOS, flushing the DNS cache requires running 'sudo dscacheutil -flushcache' followed by 'sudo killall -HUP mDNSResponder' to clear and restart the DNS resolver.
Question 6: What does the 'Internet Sharing' feature in macOS System Settings allow?
- Sharing files over the internet
- Sharing the Mac's internet connection with other devices via Wi-Fi, Ethernet, or Bluetooth (Correct answer)
- Accessing another Mac's internet connection
- Remotely managing network settings
Correct answer: Sharing the Mac's internet connection with other devices via Wi-Fi, Ethernet, or Bluetooth
Internet Sharing turns the Mac into a router, distributing its internet connection to other devices connected via Wi-Fi hotspot, Ethernet, or Bluetooth.
ACMT Networking & Connectivity 2
A customer wants to transfer files between two Macs at maximum speed.
Which method should a technician recommend?