A+ Networking Practice Quiz

Which of the following is a valid IPv4 address?

192.168.300.1 192.168.1.10 AA:BB:CC:DD:EE:FF 10.10.10.999

IPv4 addresses use four octets from 0 to 255. 192.168.1.10 fits that format.

Which device primarily forwards traffic between different networks?

Switch Access point Router Patch panel

A router directs packets between networks, such as from a home LAN to the internet.

Which device connects multiple wired devices within the same local network?

Switch Modem UPS Printer

A switch connects multiple wired clients on the same LAN and forwards traffic between them.

Which port is commonly associated with HTTPS?

21 22 80 443

HTTPS commonly uses TCP port 443 for secure web traffic.

Which protocol is commonly used to automatically assign IP addresses on a network?

DNS DHCP SMTP RDP

DHCP automatically hands out IP addresses and other network settings to clients.

What does DNS mainly do?

Translates domain names into IP addresses Encrypts hard drives Physically connects switches Boosts Wi-Fi signal by itself

DNS resolves readable names like example.com into IP addresses computers use.

Which Wi-Fi band is commonly associated with longer range but more interference?

60 GHz 5 GHz only 2.4 GHz Infrared

2.4 GHz often reaches farther but is more crowded and prone to interference.

What is an SSID?

A wired network cable type A MAC filtering device A DHCP reservation The name of a wireless network

The SSID is the wireless network name users see when connecting to Wi-Fi.

Which connector is commonly used on standard Ethernet patch cables?

HDMI RJ-45 USB-C DisplayPort

RJ-45 is the common connector used on Ethernet network cables.

Which cable category is commonly used for modern Ethernet runs?

Cat 6 VGA cable SATA cable Molex cable

Cat 6 is a common twisted-pair cable type for Ethernet networking.

A desktop has no wired network connectivity. What is the best first check?

Replace the motherboard immediately Reinstall the operating system first Verify cable connection and link lights Format the SSD

Start simple: check the cable, the port, and whether link/activity lights are present.

A user can reach websites by IP address but not by name. What is the likely issue?

Bad monitor cable Failed power supply Printer driver error DNS resolution problem

If IP-based access works but names fail, DNS is a strong suspect.

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