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05726302Jameel NelsonINFO3405 Assignment #2
1.
The IP address 192.168.52.0 falls into class C and the default subnet mask is
255.255.255.0
2.
A block of 8 (2 3) is used to accommodate the 5 subnets that are to be created with 3
subnet addresses remaining unused. This is so since it is impossible to define an IP
address block to accommodate exactly 5 subnets.
3.
(a)
The default subnet mask 255.255.255.0 converted to binary is
11111111. 11111111. 11111111.00000000
A block of 23 (8) is required to designate 5 subnets therefore 3 bits of the host portion are
used resulting in 11111111. 11111111. 11111111.11100000
The new subnet mask is 255.255.255.224/27
(b)
Logical AND operation performed on network address and subnet mask
Dot-decimal Binary Form
Network Address 192.168.52.0 11000000.10101000.00100100.00000000
Subnet Mask 255.255.255.224 11111111. 11111111. 11111111.11100000
Subnet ID 192.168.52.0 11000000.10101000.00100100.00000000
(c)
Logical OR operationDot-decimal Binary Form
Subnet Address 192.168.52.0 11000000.10101000.00100100.00000000
Inverted Subnet Mask 0.0.0.31 00000000. 00000000. 00000000.00011111
Network Broadcast Address
192.168.52.31 11000000.10101000.00100100.00011111
4.(a), (b) & (c)
Subnet Addresses
Binary Form Subnet Hosts Ranges
Subnet Broadcast Address
192.168.52.0 11000000.10101000.00100100.000 /00000
192.168.52.1 to 192.168.52.30
192.168.52.31
192.168.52.32 11000000.10101000.00100100.001 /00000
192.168.52.33 to192.168.52.62
192.168.52.63
192.168.52.64 11000000.10101000.00100100.010 /00000
192.168.52.65 to192.168.52.94
192.168.52.95
192.168.52.96 11000000.10101000.00100100.011 /00000
192.168.52.97 to192.168.52.126
192.168.52.127
192.168.52.128 11000000.10101000.00100100.100 /00000
192.168.52.129 to192.168.52.158
192.168.52.159
192.168.52.160 11000000.10101000.00100100.101 /00000
192.168.52.161 to192.168.52.190
192.168.52.191
192.168.52.192 11000000.10101000.00100100.110 /00000
192.168.52.193 to192.168.52.222
192.168.52.223
192.168.52.224 11000000.10101000.00100100.111/00000
192.168.52.215 to192.168.52.244
192.168.52.245
5.
6
(a)
(i)
It should be determined whether there are other wireless networks or wireless devices
present within range and whether such networks or devices would interfere with the
wireless LAN. A non interfering channel for operation would have to be chosen in the
event that there are networks in operation that may cause possible interference. Also any
obstacles that would defer signal strength also need to be identified such as walls, ceiling
tiles, furniture, coated glass and people.
(ii)
Security also needs to be considered such as user authentication as well as data
encryption. Security considerations for all access points to the network need to be
considered as well. WEP should be turned on in order to provide a level of security for
the network and also changing the default WEP keys.
(iii)
Determining which IEE 802.11 standard is appropriate for the wireless network. An
802.11a should be considered if there is a need to run applications such as voice or video,
and there is a small densely compacted concentration of users.
802.11b should be considered if price is a primary consideration since it costs
approximately a quarter as much an 802.11a network covering the same area.
802.11g should be considered if there is a need for backwards compatibility with 802.11b
equipment.
(b)
The firewall is used to protect unwanted intrusion to the network which includes the
server, which is in turn connected to the router. The wireless access point is connected to
the router with the use of an Ethernet cable and is used to transmit the signal from the
router to the 5 PCs. Computers A, B, C, D and E are in turn outfitted with wireless
network cards in order to communicate with the wireless access point. We assume that
the computers are within close proximity (100ft to a little over 300ft) to the access point
and obstruction such as walls, ceiling tiles, and interference from other wireless devices
are at a minimum..