I have been asked to purchase Adobe Photoshop CC(subscription), Acrobat Pro XI(Perpetual) and Acrobat Reader DC(subscription).
however computers in the network are not connected to internet.
Is it possible to connect them to internet for activation only and then remove the internet access.
Thanks in advance
The best value for subscribing to Photoshop is the Photographers Plan, you get Photoshop and Lightroom for around $10 a month. With the subscriptions, such as the Creative Cloud Suite, you can buy a yearly plan, paid monthly or yearly or pay a bit more and pay monthly and be able to cancel for the month(s) you don't want it. You're licensed to use the applications on two computers, but not at the same time. The Acrobat Reader is free.
With all plans you download the application(s) to your computer and use them in the normal way, Adobe checks (I think monthly) that you're up-to-date with your payments. So you only need to be online occasionally.
Yes, but you will also need to reconnect at intervals for a periodic license check. This normally happens once a month, but the software will continue working for up to 99 days with a reminder on opening. After the 99 days it will refuse to open.
You can force it by signing out of the CC desktop app and back in. This starts a new period.
Note that this applies to standard personal licenses. There should be special corporate licensing plans if you contact them.