eJPT Wireless Network Security 1 — Questions and Answers
Question 1: Which wireless encryption protocol is considered completely broken due to its weak IV implementation and can be cracked within minutes?
- WPA2
- WEP (Correct answer)
- WPA3
- TKIP
Correct answer: WEP
WEP (Wired Equivalent Privacy) uses RC4 with 24-bit IVs that repeat frequently, allowing statistical attacks to recover the key in minutes.
Question 2: What type of wireless attack creates a fake access point with the same SSID as a legitimate network to intercept client traffic?
- Deauthentication attack
- Replay attack
- Evil Twin attack (Correct answer)
- Beacon flood
Correct answer: Evil Twin attack
An Evil Twin attack sets up a rogue AP mimicking a legitimate SSID to lure clients into connecting through the attacker.
Question 3: Which 802.11 management frame type is commonly spoofed to forcibly disconnect wireless clients from an access point?
- Probe request frame
- Association request frame
- Deauthentication frame (Correct answer)
- Beacon frame
Correct answer: Deauthentication frame
Deauthentication frames are unauthenticated 802.11 management frames, making them trivially spoofable to kick clients off a network.
Question 4: Which wireless security protocol introduced mandatory AES-CCMP encryption and replaced the original WPA standard?
- WEP
- WPA2 (Correct answer)
- WPA3
- TKIP
Correct answer: WPA2
WPA2 (IEEE 802.11i) mandated AES-CCMP encryption, replacing the weaker TKIP used in WPA and significantly improving security.
Question 5: What is the primary purpose of the WPA2 4-way handshake?
- To broadcast the network SSID to nearby clients
- To assign an IP address to the connecting client via DHCP
- To verify the PSK and derive per-session encryption keys between client and AP (Correct answer)
- To negotiate the wireless channel and frequency band
Correct answer: To verify the PSK and derive per-session encryption keys between client and AP
The 4-way handshake confirms both parties know the Pre-Shared Key and derives the Pairwise Transient Key (PTK) used to encrypt session traffic.
Question 6: What term describes the reconnaissance technique of driving around with a wireless-enabled device to discover and map nearby Wi-Fi networks?
- Network mapping
- War driving (Correct answer)
- Packet sniffing
- Footprinting
Correct answer: War driving
War driving involves traveling with a wireless adapter and software to passively discover, log, and map wireless networks in an area.
Question 7: Which frequency band does the 802.11a wireless standard exclusively operate on?
- 2.4 GHz
- 5 GHz (Correct answer)
- 900 MHz
- 60 GHz
Correct answer: 5 GHz
802.11a operates only in the 5 GHz band, offering more non-overlapping channels and less interference than the crowded 2.4 GHz band.
eJPT Wireless Network Security 1
Which wireless encryption protocol is considered completely broken due to its weak IV implementation and can be cracked within minutes?