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Network Configuration Flashcards

6 cards from real ACSP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A user frequently moves their MacBook between their office, which requires a static IP address and specific DNS servers, and home, which uses DHCP. What is the most efficient method to switch between these network configurations without manual reconfiguration each time?

    Answer: Create and switch between Network Locations.

    Network Locations in macOS are designed specifically for this scenario. They allow a user to save entire sets of network interface settings (IP address, DNS, proxies, etc.) and quickly switch between them from the Apple menu or System Settings.

  2. A support professional needs to analyze a user's Wi-Fi environment to troubleshoot poor performance. They want to view real-time data for Signal-to-Noise Ratio (SNR), Transmit Rate, and scan for nearby networks and their channels. Which built-in macOS utility provides access to these advanced tools?

    Answer: Wireless Diagnostics

    Wireless Diagnostics contains a suite of tools for in-depth Wi-Fi analysis. By holding the Option key while clicking the Wi-Fi icon in the menu bar, you can open Wireless Diagnostics, which includes utilities for performance monitoring, scanning, and logging that provide detailed metrics like SNR.

  3. A user reports they can access internal company servers by their IP addresses but cannot browse any public websites like www.apple.com. A `ping` to an external IP address like 8.8.8.8 is successful. What is the most likely cause of this issue?

    Answer: A misconfigured or non-functional DNS server.

    The ability to successfully ping an external IP address confirms that the Mac has a valid connection to the internet. The failure to resolve domain names (like www.apple.com) while IP-based connections work points directly to a problem with the Domain Name System (DNS), which is responsible for translating domain names into IP addresses.

  4. If a Mac is simultaneously connected to an active Ethernet network and an active Wi-Fi network, how does macOS, by default, determine which interface to use for internet traffic?

    Answer: It uses the connection at the top of the network service order.

    macOS prioritizes network connections based on the Service Order list in Network settings. By default, higher-bandwidth connections like Ethernet are placed above Wi-Fi. The system will use the highest-ranked active service in the list for network traffic.

  5. A remote worker needs to connect to their corporate network via VPN. The IT department has provided them with a server address, a username, a password, and a 'shared secret'. Which built-in VPN type in macOS Network settings should they configure?

    Answer: OpenVPN

    The L2TP over IPSec configuration in macOS natively includes fields for a server address, account name (username), password, and a 'Shared Secret' (also known as a pre-shared key). This matches the credentials provided by the IT department.

  6. Which of the following command-line utilities is the primary tool for scripting and managing network service configurations in macOS, such as setting a static IP address for an Ethernet adapter or changing the network service order?

    Answer: `networksetup`

    The `networksetup` command is the designated macOS tool for configuring network settings from the command line. It can be used to perform a wide range of tasks, including setting IP addresses, configuring DNS servers, managing Wi-Fi networks, and ordering network services. `ifconfig` can display information but is not the primary configuration tool, and `ipconfig` is a Windows command.