ITPEC IP October 2019 Question 31
ITPEC IP October 2019 — Question 31 of 100
A SIM is an IC card used in a mobile device to identify the subscriber to the mobile network. It stores subscriber identity and authentication information associated with the service and enables the network to recognize the subscription.
Answer (b)
Why not others:
- (a) describes a one-time-password token
- (c) describes a storage memory card such as an SD card
- (d) describes a conditional-access card used to decode authorized digital broadcasts
Key rule: SIM stands for Subscriber Identity Module and links a mobile subscription's identity and credentials to a device.
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