Quiz 3 - GSM Security

Question 1

What data is printed on the surface of SIM cards?

Answer 1

Phone Number
ID Number
Network Provider

Question 2

What hardware components can be found in a SIM card?

Answer 2

A processor
Non-volatile memory

Question 3

T or F: All of a user’s text messages, message parameters, and the status of the messages can be downloaded from the SIM Card.

Answer 3

False

Question 4

In what format are SIM data files stored?

Answer 4

Raw binary files

Question 5

Choose the pertinent protection mechanisms for SIM cards?

Answer 5

A chargeable 4-digit PIN
An 8-digit PIN unblocking key
3 attempt PIN entry lockout

Question 6

GSM networks utilize encryption for which purposes below?

Question 7

What does CDR mean?

Answer 7

Call data Record

Question 8

What does the SMS code 00000000 mean?

Answer 8

Unused

Question 9

What does the SMS code 00000001 mean?

Answer 9

Read

Question 10

What does the SMS code 00000011 mean?

Answer 10

Unread

Question 11

What does the SMS code 00000101 mean?

Answer 11

Sent

Question 12

What does the SMS code 00000111 mean?

Answer 12

Unsent

Question 13

What does IMEI mean?

Answer 13

International Mobile Equipment Identity

Question 14

T or F: Blank SIMS can be ordered an obtained by anyone.

Answer 14

True

Question 15

In general, how many files are stored on a SIM card?

Answer 15

29

Question 16

What does SMS mean?

Answer 16

Short Message Service

Question 17

What does each CDR contain?

Answer 17

Originating Phone Number
Terminating Phone Number
Duration of call

Question 18

What does SIM mean?

Answer 18

Subscriber Identity Module

Question 19

What is the description of the file LOCI?

Answer 19

Location Information

Question 20

What is the description of the file ICCID?

Answer 20

Serial number

Question 21

What is the description of the file IMSI?

Answer 21

Subscriber ID

Question 22

What is the description of the file MSISDN?

Answer 22

Phone Number