w4-a2

Which of these is NOT a risk when a home wireless router is not securely configured?

• An attacker can steal data from any folder with file sharing enabled.

• Usernames, passwords, credit card numbers, and other information sent over the WLAN could be captured by an attacker.

• Only 50 percent of the packets will be encrypted.

• Malware can be injected into a computer connected to the WLAN.

Which of these Wi-Fi Protected Setup (WPS) methods is vulnerable?

• PIN method

• push-button method

• piconet method

• NFC method

What is the unauthorized access of information from a wireless device through a Bluetooth connection called?

• bluejacking

• bluesnarfing

• Bluetooth snatching

• Bluetooth spoofing

Which of these is a vulnerability of MAC address filtering?

• The user must enter the MAC.

• MAC addresses are initially exchanged between wireless devices and the AP in an unencrypted format.

• APs use IP addresses instead of MACs.

• Not all operating systems support MACs.

Which of these is NOT a limitation of turning off the SSID broadcast from an AP?

• Users can more easily roam from one WLAN to another.

• The SSID can easily be discovered, even when it is not contained in beacon frames, because it still is transmitted in other management frames sent by the AP.

• Turning off the SSID broadcast may prevent users from being able to freely roam from one AP coverage area to another.

• Some versions of operating systems favor a network that broadcasts an SSID over one that does not.

What is the primary weakness of wired equivalent privacy (WEP)?

• It functions only on specific brands of APs.

• Its usage creates a detectable pattern.

• It slows down a WLAN from 104 Mbps to 16 Mbps.

• Initialization vectors (IVs) are difficult for users to manage.

WPA replaces WEP with _________.

• WPA2

• Temporal Key Integrity Protocol (TKIP)

• Cyclic Redundancy Check (CRC)

• Message Integrity Check (MIC)

A preshared key (PSK) of fewer than __________ characters may be subject to an attack if that key is a common dictionary word.

• 20

• 32

• 48

• 64

A WEP key that is 128 bits in length ____________.

• has an initialization vector (IV) that is the same length as a WEP key of 64 bits

• cannot be cracked because it is too long

• cannot be used on access points that use passphrases

• is less secure than a WEP key of 64 bits because shorter keys are stronger

AES-CCMP is the encryption protocol standard used in _________.

• Bluetooth

• WPA2

• IEEE 802.11

• WPA