Binary Arithmetic:

Convert Binary to Decimal:

*128*	64	32	16	8	4	2	1	*Decimal Number*
0	1	0	0	1	0	1	1	75
0	0	1	1	0	1	1	0	54

Convert Decimal to Binary:

*128*	64	32	16	8	4	2	1	*Decimal Number*
0	0	1	0	0	0	1	0	34
0	0	1	0	1	1	0	1	45
0	1	0	0	0	0	0	1	65

Subnetting:

For the addresses below, perform the following subnetting calculations to identify the Mask, Network, Broadcast, First IP, and Last IP addresses.

Address: 165.245.12.88/24

Address	165	245	12	88
Mask	255	255	255	0

Network	165	245	12	0
Brdcast	165	245	12	255
First IP	165	245	12	1
Last IP	165	245	12	254

Address: 165.245.12.88/26

Address	165	245	12	88
Mask	255	255	255	192

Network	165	245	12	64
Brdcast	165	245	12	127
First IP	165	245	12	65
Last IP	165	245	12	126

Address: 18.172.200.77/11

Address	18	172	200	77
Mask	255	224	0	0

Network	18	160	0	0
Brdcast	18	191	255	255
First IP	18	160	0	1
Last IP	18	191	255	254

Address: 152.30.45.180/30

Address	152	30	45	180
Mask	255	255	255	252

Network	152	30	45	180
Brdcast	152	30	45	183
First IP	152	30	45	181
Last IP	152	30	45	182

Address: 192.168.1.30/26

Address	192	168	1	30
Mask	255	255	255	192

Network	192	168	1	0
Brdcast	192	168	1	63
First IP	192	168	1	1
Last IP	192	168	1	62

Address: 192.168.1.30/30

Address	192	168	1	30
Mask	255	255	255	252

Network	192	168	1	28
Brdcast	192	168	1	31
First IP	192	168	1	29
Last IP	192	168	1	30

Address: 64.233.185.100/4

Address	64	233	185	100
Mask	240	0	0	0

Network	64	0	0	0
Brdcast	79	255	255	255
First IP	64	0	0	1
Last IP	79	255	255	254

Address: 64.233.185.100/18

Address	64	233	185	100
Mask	255	255	192	0

Network	64	233	128	0
Brdcast	64	233	191	255
First IP	64	233	128	1
Last IP	64	233	191	254

Address: 192.168.10.11/25

Address	192	168	10	11
Mask	255	255	255	128

Network	192	168	10	0
Brdcast	192	168	10	127
First IP	192	168	10	1
Last IP	192	168	10	126

Address: 192.168.10.11/20

Address	192	168	10	11
Mask	255	255	240	0

Network	192	168	0	0
Brdcast	192	168	15	255
First IP	192	168	0	1
Last IP	192	168	15	254