A network engineer is troubleshooting wireless network connectivity issues that were reported by users.
The issues are occurring only in the section of the building that is closest to the parking lot.
Users are intermittently experiencing slow speeds when accessing websites and are unable to connect to network drives.
The issues appear to increase when laptop users return to their desks after using their devices in other areas of the building.
There have also been reports of users being required to enter their credentials on web pages in order to gain access to them.
Which of the following is the MOST likely cause of this issue?
A.
An external access point is engaging in an evil-twin attack. B.
The signal on the WAP needs to be increased in that section of the building. C.
The certificates have expired on the devices and need to be reinstalled. D.
The users in that section of the building are on a VLAN that is being blocked by the firewall.
A.
A network engineer is troubleshooting wireless network connectivity issues that were reported by users.
The issues are occurring only in the section of the building that is closest to the parking lot.
Users are intermittently experiencing slow speeds when accessing websites and are unable to connect to network drives.
The issues appear to increase when laptop users return to their desks after using their devices in other areas of the building.
There have also been reports of users being required to enter their credentials on web pages in order to gain access to them.
Which of the following is the MOST likely cause of this issue?
A.
An external access point is engaging in an evil-twin attack.
B.
The signal on the WAP needs to be increased in that section of the building.
C.
The certificates have expired on the devices and need to be reinstalled.
D.
The users in that section of the building are on a VLAN that is being blocked by the firewall.
A.
Based on the information provided, the most likely cause of the reported wireless network connectivity issues is an external access point engaging in an evil-twin attack.
An evil-twin attack is a type of wireless attack in which an attacker sets up a rogue access point with the same SSID as a legitimate access point in order to intercept sensitive information such as usernames and passwords. Since the issue is occurring only in the section of the building closest to the parking lot and when laptop users return to their desks after using their devices in other areas of the building, it suggests that there may be a rogue access point in the vicinity of the parking lot that is interfering with the legitimate access point in that area.
Additionally, the fact that users are intermittently experiencing slow speeds when accessing websites and are unable to connect to network drives, and are being required to enter their credentials on web pages in order to gain access to them, further suggests that the network is being compromised by an external access point.
The other options presented in the question are less likely to be the cause of the issue. Increasing the signal strength of the wireless access point in that section of the building (option B) would not necessarily address the reported issues. Expiring certificates on devices (option C) would typically only cause issues with authentication and encryption, not slow speeds or difficulty accessing web pages. Being on a blocked VLAN (option D) would not cause intermittent slow speeds or the need to enter credentials on web pages.