Given 4 offices in remote locations.

Office #1 has 133 employees with computers in each office.

Office #2 has 38 employees with computers in each office.

Office #3 has 117 employees with computers in each office.

Office #4 has 80 employees with computers in each office.


  1. What IP Class is needed?

  2. How would you modify the default mask for office #1?

  3. How would you modify the default mask for office #2?

  4. How would you modify the default mask for office #3?

  5. How would you modify the default mask for office #4?

  6. Which office should be the `main` office?

  7. You also need a 2 IP connection from the main office to each satalites.















Answers



Net# 1 has 133 hostsIPs needed = 135IPs used = 256mask is /24
Net# 2 has 38 hostsIPs needed = 40IPs used = 64mask is /26
Net# 3 has 117 hostsIPs needed = 119IPs used = 128mask is /25
Net# 4 has 80 hostsIPs needed = 82IPs used = 128mask is /25
Total Host[0] = 368IPN = 376 IPs used = 576mask is /22

8388608


/9

4194304


/10

2097152


/11

1048576


/12

524288


/13

262144


/14

131072


/15

65536


/16

B

32768


/17

16384


/18

8192


/19

4096


/20

2048


/21

1024


/22

512


/23

256


/24

C

128

/25
128

64

/26
192

32

/27
224

16

/28
240

8

/29
248

4

/30
252

2

1

Fri, 24 Apr 2026 21:59:07 +0000
63 Problems Generate Since January 1, 2026