what are some of the vulnerabilities it can face?
The ability for Apple to remotely disable or delete apps at will, some iPad 2 users reported performance issues when running iOS 8, etc.
IPad 2
At issue are restrictions imposed by the design of iOS, namely DRM intended to lock purchased media to Apple's platform, the development model (requiring a yearly subscription to distribute apps developed for the iOS), the centralized approval process for apps, as well as Apple's general control and lockdown of the platform itself. Particularly at issue is the ability for Apple to remotely disable or delete apps at will. Some in the tech community have expressed concern that the locked-down iOS represents a growing trend in Apple's approach to computing, particularly Apple's shift away from machines that hobbyists can "tinker with" and note the potential for such restrictions to stifle software innovation.

Some iPad 2 users reported performance issues when running iOS 8. Apple improved performance on the iPad 2 and the iPhone 4S on the iOS 8.1.1 update.
when did the 2nd generation ipad come out March 2, 2011 what type of device is this? It is a tablet designed, developed and marketed by Apple Inc. what are some of the software features of this device? It comes with iOS 4.3,  Safari, Mail, Photos, Video, Music, iTunes (store), Maps, Notes, Calendar, Photo Booth, and Contacts, etc. what are some of the hardware components of this device? It consists of an Apple A5 package-on-package (PoP) System-on-chip (SoC), which comprises a 1 GHz dual-core 32-bit Cortex-A9 CPU, 512 MB of RAM and a dual-core PowerVR SGX543MP2 GPU are there any additional hard components which comes with this device? Smart Cover,  dock connector,  headphone jack are some of them
wiki:12901457
IPad 2 [SEP] Technical problems
At issue are restrictions imposed by the design of iOS, namely DRM intended to lock purchased media to Apple's platform, the development model (requiring a yearly subscription to distribute apps developed for the iOS), the centralized approval process for apps, as well as Apple's general control and lockdown of the platform itself. Particularly at issue is the ability for Apple to remotely disable or delete apps at will. Some in the tech community have expressed concern that the locked-down iOS represents a growing trend in Apple's approach to computing, particularly Apple's shift away from machines that hobbyists can "tinker with" and note the potential for such restrictions to stifle software innovation.