Navrhnite adresovú schému pre sieť s IP adresou 39.125.160. 0 / 19 tak, aby bolo možné mať v danej sieti 7 počítačov a čo najviac podsietí.
Sieť 39.125.160. 0/19 musíme rozdeliť na rovnako veľké podsiete, do ktorých sa zmestí 7 PC. Pretože v každej sieti sú dve adresy, ktoré nemôžeme použiť (adresa siete a broadcastová), potrebujeme k tomuto počtu pripočítať 2 adresy a teda hľadáme sieť, v ktorej bude minimálne 7+2=9 IP adries. Pretože počítače vnímajú IP adresy v dvojkovej sústave, hľadáme najbližšiu vyššiu mocninu dvojky. K nášmu počtu hľadaných IP adries 9 je najbližšia vyššia mocnina dvojky č. 16 , čo je 24. Náš prefix pre vytvorené siete bude 32-4=/28. Vytvorené siete budú mať dokopy 16 IP adries, z toho 14 bude použiteľných pre zariadenia v sieti a zvyšné 2 sú adresa siete a broadcastová adresa. Adresy jednotlivých sietí budú rásť vždy o číslo 16 .
| Podsieť | Adresa posiete | Adresa prvého PC | Adresa posledného PC | Broadcast podsiete |
|---|---|---|---|---|
| 0. | 039.125.160.000/28 | 039.125.160.001 | 039.125.160.014 | 039.125.160.015 |
| 1. | 039.125.160.016/28 | 039.125.160.017 | 039.125.160.030 | 039.125.160.031 |
| 2. | 039.125.160.032/28 | 039.125.160.033 | 039.125.160.046 | 039.125.160.047 |
| 3. | 039.125.160.048/28 | 039.125.160.049 | 039.125.160.062 | 039.125.160.063 |
| 4. | 039.125.160.064/28 | 039.125.160.065 | 039.125.160.078 | 039.125.160.079 |
| 5. | 039.125.160.080/28 | 039.125.160.081 | 039.125.160.094 | 039.125.160.095 |
| 6. | 039.125.160.096/28 | 039.125.160.097 | 039.125.160.110 | 039.125.160.111 |
| 7. | 039.125.160.112/28 | 039.125.160.113 | 039.125.160.126 | 039.125.160.127 |
| 8. | 039.125.160.128/28 | 039.125.160.129 | 039.125.160.142 | 039.125.160.143 |
| 9. | 039.125.160.144/28 | 039.125.160.145 | 039.125.160.158 | 039.125.160.159 |
| 10. | 039.125.160.160/28 | 039.125.160.161 | 039.125.160.174 | 039.125.160.175 |
| 11. | 039.125.160.176/28 | 039.125.160.177 | 039.125.160.190 | 039.125.160.191 |
| 12. | 039.125.160.192/28 | 039.125.160.193 | 039.125.160.206 | 039.125.160.207 |
| 13. | 039.125.160.208/28 | 039.125.160.209 | 039.125.160.222 | 039.125.160.223 |
| 14. | 039.125.160.224/28 | 039.125.160.225 | 039.125.160.238 | 039.125.160.239 |
| 15. | 039.125.160.240/28 | 039.125.160.241 | 039.125.160.254 | 039.125.160.255 |
| 16. | 039.125.161.000/28 | 039.125.161.001 | 039.125.161.014 | 039.125.161.015 |
| 17. | 039.125.161.016/28 | 039.125.161.017 | 039.125.161.030 | 039.125.161.031 |
| 18. | 039.125.161.032/28 | 039.125.161.033 | 039.125.161.046 | 039.125.161.047 |
| 19. | 039.125.161.048/28 | 039.125.161.049 | 039.125.161.062 | 039.125.161.063 |
| 20. | 039.125.161.064/28 | 039.125.161.065 | 039.125.161.078 | 039.125.161.079 |
| 21. | 039.125.161.080/28 | 039.125.161.081 | 039.125.161.094 | 039.125.161.095 |
| 22. | 039.125.161.096/28 | 039.125.161.097 | 039.125.161.110 | 039.125.161.111 |
| 23. | 039.125.161.112/28 | 039.125.161.113 | 039.125.161.126 | 039.125.161.127 |
| 24. | 039.125.161.128/28 | 039.125.161.129 | 039.125.161.142 | 039.125.161.143 |
| 25. | 039.125.161.144/28 | 039.125.161.145 | 039.125.161.158 | 039.125.161.159 |
| 26. | 039.125.161.160/28 | 039.125.161.161 | 039.125.161.174 | 039.125.161.175 |
| 27. | 039.125.161.176/28 | 039.125.161.177 | 039.125.161.190 | 039.125.161.191 |
| 28. | 039.125.161.192/28 | 039.125.161.193 | 039.125.161.206 | 039.125.161.207 |
| 29. | 039.125.161.208/28 | 039.125.161.209 | 039.125.161.222 | 039.125.161.223 |
| 30. | 039.125.161.224/28 | 039.125.161.225 | 039.125.161.238 | 039.125.161.239 |
| 31. | 039.125.161.240/28 | 039.125.161.241 | 039.125.161.254 | 039.125.161.255 |
| 32. | 039.125.162.000/28 | 039.125.162.001 | 039.125.162.014 | 039.125.162.015 |
| 33. | 039.125.162.016/28 | 039.125.162.017 | 039.125.162.030 | 039.125.162.031 |
| 34. | 039.125.162.032/28 | 039.125.162.033 | 039.125.162.046 | 039.125.162.047 |
| 35. | 039.125.162.048/28 | 039.125.162.049 | 039.125.162.062 | 039.125.162.063 |
| 36. | 039.125.162.064/28 | 039.125.162.065 | 039.125.162.078 | 039.125.162.079 |
| 37. | 039.125.162.080/28 | 039.125.162.081 | 039.125.162.094 | 039.125.162.095 |
| 38. | 039.125.162.096/28 | 039.125.162.097 | 039.125.162.110 | 039.125.162.111 |
| 39. | 039.125.162.112/28 | 039.125.162.113 | 039.125.162.126 | 039.125.162.127 |
| 40. | 039.125.162.128/28 | 039.125.162.129 | 039.125.162.142 | 039.125.162.143 |
| 41. | 039.125.162.144/28 | 039.125.162.145 | 039.125.162.158 | 039.125.162.159 |
| 42. | 039.125.162.160/28 | 039.125.162.161 | 039.125.162.174 | 039.125.162.175 |
| 43. | 039.125.162.176/28 | 039.125.162.177 | 039.125.162.190 | 039.125.162.191 |
| 44. | 039.125.162.192/28 | 039.125.162.193 | 039.125.162.206 | 039.125.162.207 |
| 45. | 039.125.162.208/28 | 039.125.162.209 | 039.125.162.222 | 039.125.162.223 |
| 46. | 039.125.162.224/28 | 039.125.162.225 | 039.125.162.238 | 039.125.162.239 |
| 47. | 039.125.162.240/28 | 039.125.162.241 | 039.125.162.254 | 039.125.162.255 |
| 48. | 039.125.163.000/28 | 039.125.163.001 | 039.125.163.014 | 039.125.163.015 |
| 49. | 039.125.163.016/28 | 039.125.163.017 | 039.125.163.030 | 039.125.163.031 |
| ... | ... | ... | ... | ... |
| 463. | 039.125.188.240/28 | 039.125.188.241 | 039.125.188.254 | 039.125.188.255 |
| 464. | 039.125.189.000/28 | 039.125.189.001 | 039.125.189.014 | 039.125.189.015 |
| 465. | 039.125.189.016/28 | 039.125.189.017 | 039.125.189.030 | 039.125.189.031 |
| 466. | 039.125.189.032/28 | 039.125.189.033 | 039.125.189.046 | 039.125.189.047 |
| 467. | 039.125.189.048/28 | 039.125.189.049 | 039.125.189.062 | 039.125.189.063 |
| 468. | 039.125.189.064/28 | 039.125.189.065 | 039.125.189.078 | 039.125.189.079 |
| 469. | 039.125.189.080/28 | 039.125.189.081 | 039.125.189.094 | 039.125.189.095 |
| 470. | 039.125.189.096/28 | 039.125.189.097 | 039.125.189.110 | 039.125.189.111 |
| 471. | 039.125.189.112/28 | 039.125.189.113 | 039.125.189.126 | 039.125.189.127 |
| 472. | 039.125.189.128/28 | 039.125.189.129 | 039.125.189.142 | 039.125.189.143 |
| 473. | 039.125.189.144/28 | 039.125.189.145 | 039.125.189.158 | 039.125.189.159 |
| 474. | 039.125.189.160/28 | 039.125.189.161 | 039.125.189.174 | 039.125.189.175 |
| 475. | 039.125.189.176/28 | 039.125.189.177 | 039.125.189.190 | 039.125.189.191 |
| 476. | 039.125.189.192/28 | 039.125.189.193 | 039.125.189.206 | 039.125.189.207 |
| 477. | 039.125.189.208/28 | 039.125.189.209 | 039.125.189.222 | 039.125.189.223 |
| 478. | 039.125.189.224/28 | 039.125.189.225 | 039.125.189.238 | 039.125.189.239 |
| 479. | 039.125.189.240/28 | 039.125.189.241 | 039.125.189.254 | 039.125.189.255 |
| 480. | 039.125.190.000/28 | 039.125.190.001 | 039.125.190.014 | 039.125.190.015 |
| 481. | 039.125.190.016/28 | 039.125.190.017 | 039.125.190.030 | 039.125.190.031 |
| 482. | 039.125.190.032/28 | 039.125.190.033 | 039.125.190.046 | 039.125.190.047 |
| 483. | 039.125.190.048/28 | 039.125.190.049 | 039.125.190.062 | 039.125.190.063 |
| 484. | 039.125.190.064/28 | 039.125.190.065 | 039.125.190.078 | 039.125.190.079 |
| 485. | 039.125.190.080/28 | 039.125.190.081 | 039.125.190.094 | 039.125.190.095 |
| 486. | 039.125.190.096/28 | 039.125.190.097 | 039.125.190.110 | 039.125.190.111 |
| 487. | 039.125.190.112/28 | 039.125.190.113 | 039.125.190.126 | 039.125.190.127 |
| 488. | 039.125.190.128/28 | 039.125.190.129 | 039.125.190.142 | 039.125.190.143 |
| 489. | 039.125.190.144/28 | 039.125.190.145 | 039.125.190.158 | 039.125.190.159 |
| 490. | 039.125.190.160/28 | 039.125.190.161 | 039.125.190.174 | 039.125.190.175 |
| 491. | 039.125.190.176/28 | 039.125.190.177 | 039.125.190.190 | 039.125.190.191 |
| 492. | 039.125.190.192/28 | 039.125.190.193 | 039.125.190.206 | 039.125.190.207 |
| 493. | 039.125.190.208/28 | 039.125.190.209 | 039.125.190.222 | 039.125.190.223 |
| 494. | 039.125.190.224/28 | 039.125.190.225 | 039.125.190.238 | 039.125.190.239 |
| 495. | 039.125.190.240/28 | 039.125.190.241 | 039.125.190.254 | 039.125.190.255 |
| 496. | 039.125.191.000/28 | 039.125.191.001 | 039.125.191.014 | 039.125.191.015 |
| 497. | 039.125.191.016/28 | 039.125.191.017 | 039.125.191.030 | 039.125.191.031 |
| 498. | 039.125.191.032/28 | 039.125.191.033 | 039.125.191.046 | 039.125.191.047 |
| 499. | 039.125.191.048/28 | 039.125.191.049 | 039.125.191.062 | 039.125.191.063 |
| 500. | 039.125.191.064/28 | 039.125.191.065 | 039.125.191.078 | 039.125.191.079 |
| 501. | 039.125.191.080/28 | 039.125.191.081 | 039.125.191.094 | 039.125.191.095 |
| 502. | 039.125.191.096/28 | 039.125.191.097 | 039.125.191.110 | 039.125.191.111 |
| 503. | 039.125.191.112/28 | 039.125.191.113 | 039.125.191.126 | 039.125.191.127 |
| 504. | 039.125.191.128/28 | 039.125.191.129 | 039.125.191.142 | 039.125.191.143 |
| 505. | 039.125.191.144/28 | 039.125.191.145 | 039.125.191.158 | 039.125.191.159 |
| 506. | 039.125.191.160/28 | 039.125.191.161 | 039.125.191.174 | 039.125.191.175 |
| 507. | 039.125.191.176/28 | 039.125.191.177 | 039.125.191.190 | 039.125.191.191 |
| 508. | 039.125.191.192/28 | 039.125.191.193 | 039.125.191.206 | 039.125.191.207 |
| 509. | 039.125.191.208/28 | 039.125.191.209 | 039.125.191.222 | 039.125.191.223 |
| 510. | 039.125.191.224/28 | 039.125.191.225 | 039.125.191.238 | 039.125.191.239 |
| 511. | 039.125.191.240/28 | 039.125.191.241 | 039.125.191.254 | 039.125.191.255 |