Politeknik Elektronika Negeri Surabaya

Jaringan KompterTugas Minggu 4

Nama : Ghozi SeptiandriNRP : 2110165001Kelas : 1 D4 LJ Teknik Informatika

128 64 32 16 8 4 2 1Host Bit yang

dipinjam / Host BitMask

1 0 0 0 0 0 0 0 128

1 1 0 0 0 0 0 0 192

1 1 1 0 0 0 0 0 224

1 1 1 1 0 0 0 0 240

1 1 1 1 1 0 0 0 248

1 1 1 1 1 1 0 0 252

1 1 1 1 1 1 1 0 254

1 1 1 1 1 1 1 1 255

1. How many usable subnets (not theoretical) do you have when using a subnet mask of 255.255.255.240 on Network ID 201.114.168 ?

2^4-2 = 16-2 = 14

2. You are given Network ID 222.72.157, with a subnet mask of 255.255.255.248 to setup.How many subnets and hosts will you have ?

Subnets :2^5-2 = 32-2 = 30

Hosts :2^3-2 = 8-2 = 6

3. You are assigned a Network ID of 198.162.10 and asked to configure the network to provideat least six useable subnets with at least 25 hosts on each subnet. What is the BEGINNINGIP address of the LAST useable subnet in the network ?

Mencari panjang host bit:25>=2^n-2n=5, host bit yang dipinjam Net ID = 3

Mencari Subnet terakhir :Net 1 : 192.168.10.32Net 2 : 192.168.10.64Net 3 : 192.168.10.96Net 4 : 192.168.10.128Net 5 : 192.168.10.160 Net 6 : 192.168.10.192IP First Net 6 : 192.168.10.193

Ghozi Septiandri | 2110165001 | 1 D4 LJ Teknik Informatika1

Politeknik Elektronika Negeri Surabaya

4. How many useable hosts are on each subnet when the Network ID is 199.215.210 and thesubnet mask is 255.255.255.252 ?

Host Bit yang dipinjam Net ID = 6, sisa Host bit untuk Host 22^2-2 = 2

5. You are given Network ID 190.90, with a subnet mask of 255.255.192.0 to setup. What arethe high-order bits (Leading Bit Values) for this network ?

Binary 10 IP Class B, high order bits = Binary “10”, host bit yang dipinjam net ID = 14, host bit = 16

6. You are assigned a Network ID of 162.160 and asked to configure the network to provide atleast 60 useable subnets? What would be the subnet mask for this network ?

IP Class BMencari panjang host bit yang dipinjam Net ID:60<=2^n-2n = 6 berarti 252Subnet Mask : 255.255.252.0

7. How many useable hosts are on each subnet when the Network ID is 150.150 and the subnetmask is 255.255.192.0 ?

IP Class BHost bit yang dipinjam Net ID : 2

Jumlah Host yang mungkin :2^14-2 = 16,382

8. You are assigned a Network ID of 145.19 and asked to configure the network to provide atleast 100 useable subnets with at 500 hosts on each subnet. What is the ENDING IP addressof the EIGHTH useable subnet in the network ?

IP Class BJumlah subnet (100) = 2^N–2, N=7 Jumlah host bit yang dipinjam : 7

Net ke 8 : 145.19.16.0Ip first = 145.19.16.1Ip last = 145.19.17.254Ip broadcast = 145.19.17.255

Ghozi Septiandri | 2110165001 | 1 D4 LJ Teknik Informatika2

Politeknik Elektronika Negeri Surabaya

9. You are a private contractor hired by the large company to setup the network for theirenterprise. The Network ID is 33 and you need at least 125 subnets in their large networkwith at least 125,000 hosts on each of the subnets. What would be the subnet mask for thisnetwork ?

IP Class AJumlah subnet (125) = 2^N-2, N=7Jumlah host bit yang dipinjam : 7Jadi berdasarkan tabel pada halaman 1, Net Masknya 255.254.0.0

10. You are given Network ID 55.0.0.0, with a subnet mask of 255.240.0.0 to setup. How manysubnets and hosts will you have ?

IP Class AHost bit yang dipinjam 4 (berdasarkan tabel pada halaman 1)

Jumlah Subnet :2^4-2=14

Jumlah host :2^20-2=1,048,574

Ghozi Septiandri | 2110165001 | 1 D4 LJ Teknik Informatika3