Networking Quiz 5

A smart home has over 50 connected devices constantly communicating with the central WAP. Which wireless networking feature, introduced in 802.11ac, allows the WAP to communicate with multiple client devices at the same time (downlink), drastically reducing network delay?

• Single-User MIMO (SU-MIMO)

• OFDMA

• Multi-User MIMO (MU-MIMO)

• CSMA/CD

A company needs to establish a wireless link between two buildings located 1 kilometer apart, a scenario known as Point-to-Point (P2P) wireless. Which type of antenna is best suited for this application, as it focuses the wireless signal in a concentrated direction to maximize distance?

• Unidirectional

• Omnidirectional

• Isotropic

• Internal

A laptop is attempting to join a busy Wi-Fi network. To avoid simultaneous transmission that could corrupt data, the laptop sends a Request to Send (RTS) to the WAP, and the WAP replies with a Clear to Send (CTS) to reserve the airtime. This process is part of which wireless channel access method?

• CSMA/CD (Collision Detection)

• CSMA/CA (Collision Avoidance)

• Token Passing

• Half Duplex

A large warehouse has a wired Ethernet network, but mobile inventory scanners and forklifts need network access. The network administrator installs a bridge-like device that extends the wired network to the wireless network for these mobile devices. This device is functioning as a:

• Router

• Hub

• Wireless Access Point (WAP)

• Firewall

Before installing a new wireless network in a university dormitory, the IT team needs to determine the optimal placement of WAPs and channel selection to ensure reliable coverage. Which initial deployment step involves analyzing blueprints, performing a physical walk-through, and using specialized software to create network heat maps?

• Site Survey

• Firmware Update

• Network Vulnerability Scan

• WPA3 Implementation

A user wants to quickly transfer a file between their laptop and a friend's laptop in the same room without needing a WAP. This direct, device-to-device connection with no WAP infrastructure is an example of which type of Service Set?

• Ad hoc Mode

• Infrastructure Mode

• Extended Service Set

• Dual-homed Topology

A home user wants to make their Wi-Fi network less visible to casual users scanning for networks. To implement a basic layer of security, the user disables the WAP's ability to constantly transmit the wireless network's name. What did the user disable?

• MAC Filtering

• WPA3 Encryption

• SSID Broadcasting

• Channel Bonding

A network administrator is setting up a new WAP and is selecting the security protocol. Which protocol should be avoided due to its known security flaws?

• WEP

• WPA2

• WPA3

• 802.1x

A user complains that their Wi-Fi connection is constantly dropping and the data rate is very low. The technician checks the WAP's logs and suspects external interference. Which common household item can interfere with the 2.4 GHz Wi-Fi signal?

• LED light bulbs

• Microwave ovens

• Wired Ethernet switches

• Coaxial cables

A network administrator wants to ensure that only specific, known devices (laptops, phones) are allowed to connect to the WAP, even if an unauthorized user knows the password. Which security measure is used to filter connection attempts based on the unique hardware address of the device?

• Disable SSID Broadcasting

• Enable MAC Filtering

• Change the Default SSID

• Implement a VPN