Skip to main content

week 9

 

Cell phones use radio frequencies to send and receive information that is translated into sound. At any given time while in use, the cell phone sends information on at least two different frequencies, one for sending information and one for receiving it. Signals carrying voice, text, and digital data are transmitted via radio waves from one device to another. The typical cell phone includes a dual-strength transmitter, capable of transmitting either 0.6-watt or 3-watt signals.

 

    A cellphone handset contains a radio transmitter, for sending radio signals onward from the phone, and a radio receiver, for receiving incoming signals from other phones. The radio transmitter and receiver are not very high-powered, which means cell phones cannot send signals very far.

Cellular networks are distributed over land areas called cells, each served by at least one fixed-location transceiver (typically three cell sites or base transceiver stations). These base stations provide the cell with the network coverage which can be used for transmission of voice and data.

 

Comments

Post a Comment

Popular posts from this blog

Week 6 Cloud Computing

     Key Features of Azure DNS DNS Hosting : Azure DNS allows you to host your DNS domains in Azure. You can manage your DNS records using the same credentials, APIs, tools, and billing as your other Azure services. Public and Private DNS Zones : Public DNS Zones : These are used for hosting domains accessible over the internet. You can manage DNS records for your public domains using Azure DNS. Private DNS Zones : These are used for managing and resolving domain names within your virtual network without configuring a custom DNS solution. This is useful for internal name resolution within your Azure environment. DNS Resolution : Azure DNS provides fast and reliable DNS resolution using a global network of name servers. Anycast networking allows DNS queries to automatically route to the closest name servers for the best possible performance.   DNS Private Resolver : This service enables you to query Azure DNS private zones from an on-premises...
Post a Comment
Read more

System Hardening Week 2

  The  Application layer  is the seventh and highest layer of the OSI and TCP/IP models. It specifies the shared communication protocols and interface methods hosts use in a communications network. The protocols in the Application layer are responsible for providing services to the user, such as file transfer, email, and web browsing.
Post a Comment
Read more

System Hardening Week 12.

  Network automation offers several compelling benefits, and its impact on IT professionals is significant. Below are some advantages.   Benefits of Network Automation: It eliminates manual tasks by automating network processes. This boosts IT productivity, allowing professionals to focus on strategic initiatives that drive business growth. Network automation enables faster provisioning of critical data services, optimizes network performance, and speeds up the rollout of new services and applications. Previously infrequent network changes have become more frequent due to automation, reducing manual adjustments' time-consuming and resource-intensive nature. It helps build a reliable network for an infrastructure-as-code approach that consistently maintains network state and configuration, enhancing reliability from data centers to edge location...
Post a Comment
Read more