What does an SSID identify?
A A device serial number
B A router firmware version
C A Wi-Fi network name
D An internet data plan
Answer: C. A Wi-Fi network name. An SSID is the name a Wi-Fi network advertises to nearby devices.
Which security mode should a modern home router prefer?
A Open network
B WPA3 Personal
C WEP encryption
D No password
Answer: B. WPA3 Personal. The FTC recommends WPA3 Personal or WPA2 Personal to encrypt a home network.
Why change a router's default administrator password?
A Defaults may be widely known
B It increases the Wi-Fi range
C It upgrades every device
D It changes the SSID automatically
Answer: A. Defaults may be widely known. Default router credentials are often known or guessable and can expose settings.
How should the Wi-Fi password differ from router admin credentials?
A Reuse the same short code
B Leave both at default
C Share both publicly
D Use separate strong passwords
Answer: D. Use separate strong passwords. Separate credentials reduce the damage if one password is exposed.
What does a modem connect to?
A A laptop keyboard
B A Bluetooth headset
C The internet service provider
D A printer's ink supply
Answer: C. The internet service provider. A modem links the home network to the internet service provider's connection.
What does a router mainly do?
A Stores every website offline
B Connects devices to a network
C Replaces the internet provider
D Charges wireless devices
Answer: B. Connects devices to a network. A router connects local devices and routes traffic between the local network and internet connection.
Which router location usually supports better coverage?
A Central and unobstructed
B Inside a metal cabinet
C Behind a thick concrete wall
D On the floor corner
Answer: A. Central and unobstructed. Central placement away from obstacles can improve signal coverage through the home.
How does the 2.4 GHz band often compare with 5 GHz?
A It always has faster speeds
B It cannot pass through walls
C It works only outdoors
D It often reaches farther
Answer: D. It often reaches farther. The 2.4 GHz band often offers more range, while actual performance depends on conditions.
When might 5 GHz Wi-Fi be useful?
A For the farthest outdoor room
B When the router is unplugged
C For nearby higher-throughput connections
D For Bluetooth pairing
Answer: C. For nearby higher-throughput connections. At shorter distances, 5 GHz can offer higher throughput, depending on interference and hardware.
What should be true before using Wi-Fi 6E?
A Only the internet plan
B Both support Wi-Fi 6E
C The laptop has Bluetooth
D The network name is hidden
Answer: B. Both support Wi-Fi 6E. Wi-Fi 6E requires compatible router and client hardware, and may depend on local rules.
Why can neighboring routers slow a connection?
A They may share crowded channels
B Shared account passwords
C They reuse passwords
D They disable the modem lights
Answer: A. They may share crowded channels. Nearby networks using the same channels can create interference or contention.
What can a mesh Wi-Fi system improve?
A The phone's battery capacity
B A computer's screen resolution
C The modem's data plan
D Coverage across multiple rooms
Answer: D. Coverage across multiple rooms. Mesh nodes can extend network coverage where one router's signal is weak.
How does a guest network help?
A It increases router storage
B It upgrades the modem
C It separates visitor access
D It upgrades the modem firmware
Answer: C. It separates visitor access. A guest network offers visitors connectivity without sharing the primary network credentials.
What is a risk of enabling WPS?
A It encrypts all devices automatically
B It can weaken access security
C It removes the admin password
D It prevents firmware updates
Answer: B. It can weaken access security. WPS can make joining easier but should be used only if its security is understood.
Why update router firmware?
A Updates can fix security flaws
B It guarantees faster internet
C It resets every device password
D It changes the internet provider
Answer: A. Updates can fix security flaws. Firmware updates can address security vulnerabilities and improve reliability.
When should a router be rebooted?
A To permanently erase its settings
B To auto-change the password
C To update a phone's apps
D To refresh a stalled connection
Answer: D. To refresh a stalled connection. Restarting can refresh the connection without erasing the router configuration.
What does a router factory reset usually do?
A Restarts the Wi-Fi radio briefly
B Repairs a damaged cable
C Restores default settings
D Increases internet speed
Answer: C. Restores default settings. A factory reset removes customized settings and may require setup again.
Where is the modem's WAN connection usually directed?
A To a wireless keyboard
B To the ISP feed
C To a screen projector
D To a printer
Answer: B. To the ISP feed. The modem's incoming connection comes from the provider's service line or access equipment.
What is the main purpose of an Ethernet cable?
A A wired network connection
B Wireless device pairing
C Powering a router from Wi-Fi
D Encrypting browser history
Answer: A. A wired network connection. Ethernet connects devices through a physical network cable.
Which check helps isolate a Wi-Fi problem?
A Change every router setting
B Reset Windows immediately
C Rename the network first
D Test another device
Answer: D. Test another device. If another device also fails, the issue may involve the router or internet service.
What can a Wi-Fi status icon alone not confirm?
A The laptop has a screen
B A phone is fully charged
C Internet access is working
D The router has a password
Answer: C. Internet access is working. A device can connect to Wi-Fi while the internet connection itself is unavailable.
How can someone verify whether an outage is provider-wide?
A Clear all browser cookies
B Check the ISP's status updates
C Change the router name
D Disable Bluetooth
Answer: B. Check the ISP's status updates. An ISP status page or support channel can confirm reported service interruptions.
Why forget and rejoin a saved network?
A To refresh stored credentials
B To delete the router firmware
C To increase Wi-Fi frequency
D To erase all phone photos
Answer: A. To refresh stored credentials. Forgetting a network and reconnecting can resolve stale password or profile problems.
Which network detail is needed to join password-protected Wi-Fi?
A The router's serial number
B The account recovery code
C The modem's warranty date
D The network password
Answer: D. The network password. Joining a secured network requires its current passphrase.
What makes a Wi-Fi passphrase harder to guess?
A A router's brand name
B A short repeated number
C Length and uniqueness
D A public street address
Answer: C. Length and uniqueness. Use a unique long passphrase rather than an obvious or reused password.
Why should the network name avoid personal details?
A It slows all devices
B Nearby people can see it
C It disables WPA encryption
D It changes the router password
Answer: B. Nearby people can see it. An SSID is visible nearby, so avoid embedding names, addresses, or device details.
Does hiding an SSID make a network secure by itself?
A No, it is not enough
B Yes, it blocks every attacker
C Only on older routers
D Yes, it replaces encryption
Answer: A. No, it is not enough. A hidden name does not replace strong encryption and access controls.
What can MAC address filtering do?
A Encrypt internet traffic
B Hide browsing from providers
C Change the Wi-Fi password
D Allow listed device addresses
Answer: D. Allow listed device addresses. MAC filtering may limit connections, but it should not be treated as strong security alone.
What does WPA encryption protect?
A The router's physical location
B Every cloud backup forever
C Local wireless traffic
D All websites after login
Answer: C. Local wireless traffic. WPA protects wireless communication between devices and the access point, but not every security risk.
Why is a public hotspot not automatically private?
A It has no internet connection
B Others may share the network
C It always blocks HTTPS
D It encrypts all user traffic
Answer: B. Others may share the network. A public hotspot may be accessible to many users; protect accounts and use encrypted sites.
What does HTTPS indicate for a website connection?
A Encrypted connection to that site
B A website is guaranteed honest
C The Wi-Fi is WPA3
D The device has antivirus
Answer: A. Encrypted connection to that site. HTTPS encrypts the browser connection, but does not prove the site itself is trustworthy.
When might a captive portal appear?
A When updating router firmware
B When plugging in Ethernet
C When changing a Wi-Fi password
D Before joining public Wi-Fi
Answer: D. Before joining public Wi-Fi. Some public networks require agreeing to terms or signing in through a web page.
What should users avoid on unexpected hotspot sign-in pages?
A Checking the network name
B Asking venue staff
C Entering sensitive credentials
D Opening network settings
Answer: C. Entering sensitive credentials. Unexpected portals can be fraudulent; verify the network with the venue before entering details.
Why disable automatic joining of unfamiliar networks?
A It improves router coverage
B It prevents risky connections
C It changes the password length
D It updates all apps
Answer: B. It prevents risky connections. Turning off auto-join can prevent a device from connecting to a similarly named rogue network.
What is a mobile hotspot?
A A phone sharing its internet
B A home fiber modem
C A wireless printer feature
D A router firmware package
Answer: A. A phone sharing its internet. A mobile hotspot lets other devices use the phone's internet connection.
Which router setting assigns local addresses automatically?
A NFC
B WPS
C SSID
D DHCP
Answer: D. DHCP. DHCP commonly assigns IP addresses to devices on a local network.
What is a device's local IP address used for?
A Naming the Wi-Fi network
B Measuring battery health
C Identifying it on a network
D Updating router firmware
Answer: C. Identifying it on a network. A local IP address helps route traffic to a device within the network.
What does a DNS service help translate?
A Wi-Fi passwords into QR codes
B Domain names into IP addresses
C MAC addresses into passwords
D Router lights into error codes
Answer: B. Domain names into IP addresses. DNS resolves human-readable domain names to network addresses.
Why can changing DNS not fix every internet problem?
A Other connection failures may remain
B DNS controls Wi-Fi encryption
C DNS sets router power
D DNS changes screen size
Answer: A. Other connection failures may remain. DNS changes only name resolution and cannot repair an outage or weak wireless signal.
How can router placement near appliances affect Wi-Fi?
A It increases the internet plan
B It strengthens encryption
C It updates the modem
D Some devices may cause interference
Answer: D. Some devices may cause interference. Nearby electronics and obstacles can interfere with wireless signals in some settings.
What should be checked when signal is weak far away?
A The laptop's wallpaper
B The browser font size
C Distance, walls, and obstacles
D The printer queue
Answer: C. Distance, walls, and obstacles. Signal strength can fall with distance and physical barriers.
Which step can help when a device cannot find a network?
A Delete all saved passwords
B Confirm the network is broadcasting
C Reset the device immediately
D Replace the router first
Answer: B. Confirm the network is broadcasting. Check that the access point is powered and broadcasting the correct band or network.
What does a router's guest password control?
A Visitor Wi-Fi access
B Administrator firmware updates
C The modem's upstream signal
D Local device storage
Answer: A. Visitor Wi-Fi access. The guest password grants access to the guest network.
Why check the router's connected-device list?
A To measure screen brightness
B To review web bookmarks
C To find deleted files
D To spot unknown connections
Answer: D. To spot unknown connections. A device list can help detect unfamiliar connections and manage network access.
What should be done before changing router security settings?
A Unplug it during updates
B Delete all connected devices
C Read the router's instructions
D Share the admin password
Answer: C. Read the router's instructions. Use manufacturer guidance because settings and recovery steps vary by model.
How can a forgotten Wi-Fi password be shared more safely?
A Post publicly
B Use approved sharing
C Send it to strangers
D Use the admin password instead
Answer: B. Use approved sharing. Share credentials only with intended users using a method appropriate to the router.
Which Windows recovery step is usually less disruptive than network reset?
A Forget and reconnect to Wi-Fi
B Remove all network adapters
C Reset the whole PC
D Reinstall Windows immediately
Answer: A. Forget and reconnect to Wi-Fi. Microsoft recommends simpler connection checks before the more disruptive network reset.
Why is network reset a later troubleshooting step?
A It changes the router location
B It erases Wi-Fi standards
C It damages the modem
D It removes network settings
Answer: D. It removes network settings. A reset can remove adapter settings and require VPN or other network software setup again.
What should a user do if only one device has Wi-Fi trouble?
A Replace the ISP modem immediately
B Change every household password
C Check that device's settings
D Factory-reset all routers
Answer: C. Check that device's settings. If other devices work, focus first on the affected device's settings or adapter.
When should router manufacturer support be contacted?
A Before checking power
B After basic checks fail
C Whenever Wi-Fi is enabled
D After changing the wallpaper
Answer: B. After basic checks fail. Manufacturer support can help with model-specific configuration after simple connection checks.