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| אנגלית אוצר מילים | |||
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| PPP Data Encryption Standard Encryption protocol (PPP, RFC 1969); Department of Elementary and Secondary Education (Technical); description | |||
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| אנגלית אוצר מילים | |||
| |||
| PPP Data Encryption Standard Encryption protocol (PPP, RFC 1969); Department of Elementary and Secondary Education (Technical); description | |||