In an email to students, the Provost and Vice-Provost (Education) told students "we can say with certainty you will not be examined on any material you have not been taught".
Academic and support staff belonging to UCU have begun a 14-day walk out after potential changes to pension scheme.
A number of UK universities have said they will alter exams in light of UCU strikes.
Changes to the system mean guests may not necessarily sit together.
The review could mean humanities degrees charge less.
Imperial College Union was victim of a data breach earlier this month.
Submitted manifestos for this year's Leadership Elections were made available for nearly two weeks due to a computer error.
Dr Kaveh Madani, a Reader at the Imperial Centre for Environmental Policy, is believed to have been detained for 72 hours last weekend.
Imperial College Union Council largely voted in favour of a motion to support the upcoming strike, which is due to start this week.
Imperial College Health Centre could see the psychotherapy services on offer cut by up to 60% later this year.
Nearly 2,000 nominations made this year, more than double the previous record.
A paper proposing the establishment of a Union petition system passed at Council, among other papers.