Refer to figure.
EASA learning objective 022.13.06.01.04 states: 'Explain implications of malfunctions with the EFB installation in a fully electronic flight-deck environment: mass and balance calculations; performance calculations; access to charts; access to manuals.

Electronic Flight Bags (EFB) were introduced to improve crew efficiency by using less paper on the flight deck. Initially this involved using digital copies of technical documents, charts and approach plates on a portable electronic device such as a laptop or tablet. Eventually more sophisticted apps allowed performance calculations and the latest technology includes the ability to display dynamic data such as a moving map on the EFB.

EFB hardware is divided into two categories: portable and installed.

Portable EFB

A portable electronic device (PED), which is not part of the certified aircraft configuration, that can be used on or off the flight deck. (e.g.laptop or tablet)

Installed EFB

An EFB platform that is installed in the aircraft and is considered an aircraft part and therefore subject to airworthiness approval. Early installed EFB's were PEDs that were modified to have a permanet mounting on the flight deck with their own power supply. The latest installed EFB's are integrated into the permanent flight deck displays (see figure)

Loss of an integrated EFB may affect access to charts and manuals and have an impact on performance and mass and balance calculations.

Systems display pages --> INCORRECT. Aircraft system displays aren't shown on EFB screens.

Charts and manuals --> CORRECT. As mentioned in the learning objective, charts and manuals are normally displayed on an EFB

ACARS messages --> INCORRECT. ACARS messages will be displayed on the FMS CDU or DCDU

EICAS data --> INCORRECT. The engine indicating and crew alerting system (EICAS) has its own dedicated screens in the aircraft.