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COMP47430_Mobile > 14 - Mobile Data Structure > Flashcards

14 - Mobile Data Structure Flashcards

1
Q

What are the the substitution keys of a Nokia PM file for the following hex values?

  • A
  • B
  • C
  • D
  • E
  • F
A
  • A = 0
  • B = *
  • C = #
  • D = p
  • E = w
  • F = +
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2
Q

Nokia PM - Decode the following IMEI Data strings:

  • 333536343437303133363032323734
  • 3335393337362F30302F3935393031302F31
A
  • 3 5 6 4 4 7 0 1 3 6 0 2 2 7 4
  • 3 5 9 3 7 6 / 0 0 / 9 5 9 0 1 0 / 1
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3
Q

Nokia PM - Decode the following ICCID Data string:

985303032522311999F2

A

8935303052221391992F

(Reverse niblled, F is ignored)

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4
Q

Nokia PM - Decode the following IMSI Data string:

2927301030713515

A

9272030103175351

(reverse nibbled, 9 is ignored)

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5
Q

What are the important fields of a Nokia Series 30 Contact PM Data?

A

2=0DF35387924754A00000000001416D6…..FF

  • 0D : Length of Phone number
  • F35387924754A : Phone number (Nokia char)
  • 01 : Start marker of contact name
  • 1416 : Contact name, stored in ASCII Format
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6
Q

What are the important fields of a Alternative Series 30 Contact Structure?

A

0=09A1689245A….00000576F…FF

  • 09 : Length of Phone number
  • A1689245A: Phone number (Nokia char)
  • 00: Start marker of contact name
  • 576F: Contact name, stored in ASCII Format
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7
Q

What are the important fields of a Nokia Series 40 Contact PM?

A

2=02000A07010054006100…000A0B02…AA8639..

  • 02 : Number of fields
  • 000A : Length of first field
  • 07 : Type of data (07 = Name or Text)
  • 01 : Entry position in the data string
  • 0054006100 : Contact name (unicode)
  • 000A : Length of first field
  • 0B : Number
  • 02 : Entry position in the data string
  • AA8639 : Phone number (no reverse nibbeling)
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8
Q

What are the important fields of a Series 30 Dialled Call Register including a Contact Name?

A

0=0AA8689772A5…0142696273….AD481922

  • 0A : Length of dialled number
  • A8689772A5 : Dialled number (Nokia char)
  • 42696273 : Dialled contact in ASCII
  • AD481922 : Time and Date (Nokia format)
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9
Q

What are the important fields of a Alternative Series 30 Dialled Call Register including a Contact Name?

A

0=09A1679225A…00000576F726BFF…0000013B1BCB…FF

  • 09 : Length of dialled number
  • A1679225A : Dialled number
  • 576F726B : Dialled contact in ASCII
  • 13B1BC… : Three Nokia Series 30 timestamps.
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10
Q

In what key are Nokia PM phone book entries stored?

A
  • [58] : Contacts
  • [59] : Dialed
  • [60] : Received
  • [61] : Missed Calls
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11
Q

Convert the following Nokia security code: 3132333435?

A

12345

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12
Q

Series 30 Call Times: In what key can it be found and for what do the following numbers stand for:

  • 6=
  • 8=
  • 10=
  • 12=
A

Can be found in key [33]. The format of the data string is in hhmmss (in hex).

  • 6= : Last call duration
  • 8= : Total Received Call Duration
  • 10= : Total Dialled Call Duration
  • 12= : Total All Calls Duration
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13
Q

What are the two transmission methods of SMS?

A
  • Text Mode
  • Protocol Description Unit (PDU) Mode
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14
Q

What three data types uses the PDU Mode?

A
  • Octet
  • Semi-octet
  • Septet
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15
Q

How das GSM 7 Bit Encoding works?

A

Explain using lecture notes.

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16
Q

How does GSM 7 Bit Decoding works?

A

Explain by using lecture notes.

17
Q

Timestamps - GSM: Convert

61706161342540

A

61 Year reverse nibbled 16

70 Month reverse nibbled 07

61 Day reverse nibbled 16

61 Hour reverse nibbled 16

34 Minute reverse nibbled 43

25 Seconds reverse nibbled 52

40 UTC Offset in 15 minute intervals reverse nibbled 04 = 4x15min = 1h

41706161342540 = 16 th July 2016 16:43:52 UTC+1

18
Q

Timestamps - Nokia Series 40 Format: Convert

07DA0910053222

A

07DA Hex value of the year (2010)

09 Hex value of the Month (09)

10 Hex value of the day (16)

05 Hex value of the hour (05)

32 Hex value in minutes (50)

22 Hex value in seconds (34)

07DA0910053222 = September 16th 2010 05:50:34

19
Q

Timestamps - LG: Convert

017020119590

A

01 Year reverse nibbled (10)

70 Month reverse nibbled (07)

20 Day reverse nibbled (02)

11 Hour reverse nibbled (11)

95 Minutes reverse nibbled (59)

90 Seconds reverse nibbled (09)

017020119590 = July 2 nd 2010 11:59:09

20
Q

Timestamps - Samsung: Convert

AF11A17D

A

AF11A17D (Little Endian Format)

7DA111AF (Converted Format)

7 D A 1 1 1 A F

0111 1101 1010 0001 0001 0001 1010 1111

-

0111 1101 1010 = (1st 12 bits) Year = 2010

0001 = (Next 4 bits) Month = 01

0001 0 = (Next 5 bits) Day = 02

001 10 = (Next 5 bits) Hour = 06

10 1111 = (last 6 bits) Minute = 47

7DA111AF = 2nd January 2010 06:47

COMP47430_Mobile (13 decks)

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