and that to ensure message data in reconstructing it data carries messages each packet when multiple some reach their data streams are meaning destination being transferred between nodes in a network Network Can identify Can explain the reasons for Can discuss the Can explain why Can draw performance that different physical media advantages typical networks conclusions different performing differently on a and use a combination about the choice types of network disadvantages of different of of physical physical of using physical media for media in large media different types communication in networks in change of physical terms of cost, terms of both network media in terms convenience and intra- and performance of cost, other factors performance communications, and other and factors such factors as cost, performance, reliability and convenience Network Understands Understands the need for Can explain the Understands that Can hypothesise security that modern security in networks to need for network security is about the value basics networks ensure data is not altered security in achieved through a of strong include or intercepted by third networks in multi-layered security security parties of data approach, and can measures to features but security and explain why more typical online may not privacy, and than one layer is activities such as completely can provide a necessary for the banking, identity understand simple system to management description of effectively and other critical basic maintain data services, and the
and that data carries some meaning to ensure messages reach their destination message data in each packet reconstructing it when multiple data streams are being transferred between nodes in a network Network performance Can identify that different types of physical media change network performance Can explain the reasons for different physical media performing differently on a network Can discuss the advantages and disadvantages of using different types of physical media in terms of cost, performance and other factors Can explain why typical networks use a combination of different of physical media for communication in terms of cost, convenience and other factors Can draw conclusions about the choice of physical media in large networks in terms of both intra- and communications, and factors such as cost, performance, reliability and convenience Network security basics Understands that modern networks include security features but may not completely understand Understands the need for security in networks to ensure data is not altered or intercepted by third parties Can explain the need for security in networks in of data security and privacy, and can provide a simple description of basic Understands that network security is achieved through a multi-layered approach, and can explain why more than one layer is necessary for the system to effectively maintain data Can hypothesise about the value of strong security measures to typical online activities such as banking, identity management and other critical services, and the
computer-chatter-2---learning-sequence.docx