The Wifi Network Services

Published Date: 02 Nov 2017

According to Peterson Davie "Computer Network"-pg138 Broadband wireless is use in a partial office and building area and to receive this type of Internet connection, consumers ascend to the office and building area are the directing connect to the transmitter.

According to "Introduction to Broadband Wireless"-pg4 Broadband wireless is about to obtain the broadband connection to a wireless experience, which offer users certain different benefits and experience. The Wifi Broadband is compatibility with any device that supports every user standards but also making it possible for user to choose the widest bandwidth option.

WiMax Mobile

According to Peterson Davie "Computer Network"-pg143 WiMAX (Worldwide Interoperability for Microwave Access) Mobile is a broadband wireless that location WiMax networks across the widespread coverage area on technology in radio access and flexible WiMax network construction.

According to Peterson Davie "Computer Network"-pg144 WiMax Mobile does not incorporate mobility at the time , although efforts to add fuction in WiMax. WiMax’s system users, calling to subscriber stations, are supposed not for user computer device but rather system using the communication of the computer devices being used in the building.

WiBro

According to Wikipedia "http://en.wikipedia.org/wiki/WiBro " WiBro (Wireless Broadband) is a wireless broadband that build up in the Korean telecoms industry and WiBro system is silimar to the High Speed Downlink Packet Access, but there are slight differences among them.

According to wiseGEEK "http://www.wisegeek.com/what-is-wibro.htm" Wibro has been in the working for around the same time in the telecoms industry as WiMax. This wireless technology introduce as a mobile broadband accessing in Korea as a mobile broadband but because it is based on High Speed Downlink Packet Access.

Comparing

Wifi Broadband

Pros

Wifi to be connects wherever you are as long as it is within the Wifi coverage.

Cons

Not for hardcore online gaming due to latency issue.

WiMax Mobile

Pros

Wimax mobile is allowing the access to the widest type of device including desktop, laptop, gaming devices, MP3.

Cons

Wimax will be limited to more compactly populated area, leaving rural area out of the technological loop.

WiBro

Pros

Easy to install.

WiBro service in not only urban area but also rustic and isolated placed.

Cons

WiBro service will be restriction of wireless bandwidth for using in high density areas.

Below table will show the minimize transfer rate, maximize transfer rate and channel bandwidth of the above three product.

Min Data rate

Max Data rate

Wifi Broadband

6.5 Mbps

11 Mbps

WiMax Mobile

Downlink

Uplink

13.6 Mbps

1.83 Mbps

Downlink

Uplink

8.8 Mbps

1.38 Mbps

WiBro

Downlink

Uplink

512 Kbps

128 Kbps

Downlink

Uplink

19.92 Mbps

5.53 Mbps

Topic 2

Dynamic DNS

According to Cricket Litu & Paul Albitz "DNS and BIND 5th Edition"-pg230 DDNS is a service that uses a domain name, this domain name can be your own domain name free from DDNS server. You can now spot your network device using this DDNS from anywhere on the Internet.

According to About.com "http://compnetworking.about.com/cs/domainnamesystem/g/bldef_ddns.htm" DDNS that allow anyone to gain access on the Internet to possessions on a LAN when the Internet address of that network is difference. Users of the internet when connection to an ISP will be allocated a few IP address by the ISP. This address can be static, or may change in every session on the internet to the following dynamic.

According to Wikipedia "http://en.wikipedia.org/wiki/Dynamic_DNS" These are generally implement in the user's computer, which will changes the IP address and sends out an update message to the DDNS. The communication among the user's computer and the DDNS is not consistent, from one provider to another, there are a few web-based method of updating over time.

Advantages

According to Cricket Litu & Paul Albitz "DNS and BIND 5th Edition"-pg228 DDNS update permits are more simple adding than the deletion of records. User can add or delete in any record, delete records with the same DDNS name and type such as all the address.

All delete all records associated with a given DDNS an update can also be specify in some records that exist or not in the zone as a precondition to the update’s taking effect.

Disadvantage

According to About.com "http://compnetworking.about.com/cs/domainnamesystem/g/bldef_ddns.htm" The disadvantage of DDNS is that add on host software is a new possible failure on the network that must be maintained.

Active Directory

According to Microsoft "http://technet.microsoft.com/en-us/library/cc978010.aspx" Active Directory integrates DNS enable Directory storage and duplication in DNS database. Windows 2003 DNS server that is including with Windows 2003 Server storing zones data in Directory. When you construct a computer as a DNS zones are more often than not stored in a text files on the DNS servers of the DNS zones require by DNS are store in a text file in the DNS server. These text files must be coordinated among DNS name servers by using a system that requires an replication topology name as zone transfer.

To use DNS integration within the Directory is allocate the zone type of Active Directory that integrate with the zone you create. Objects that correspond to DNS zone to the database records in the Microsoft DNS container inside the System container and the content are replicate to all DNS controllers in the domain. When you have Directory to integrated DNS zones, all Active Directory DNS controllers that run Windows 2003 server and are configure as primary name server.