Networks (7.2) Flashcards
(36 cards)
(Networks L1 Networks Basics) - State the Advantages of using a Network
Enhances availability of resources and information, Makes File sharing easier, Betters ease of communication, High potential for growth, Increases cost efficiently, Expands storage capacity
(Networks L1 Networks Basics) - State the Disadvantages of using a Network
Lack of independence, Potential for security breaches, Central point of failure,
Fasten propagation of Malware, High levels of Skill needed to manage, Expensive to set up
(Networks L1 Networks Basics) - Define the term ‘Network Resource’ in the context of IT
A ‘Network Resource’ refers to elements of Hardware, Software or Data that is related to networks (e.g. NAS Drives, Servers and Printers)
(Networks L1 Networks Basics) - Define the term ‘Capacity’ in the context of IT
(Networks L1 Networks Basics) - Define the term ‘Scalable’ in the context of IT
(Networks L1 Networks Basics) - Define the term ‘Connection’ in the context of IT
(Networks L1 Networks Basics) - Define the term ‘Network Interface’ in the context of IT
(Networks L1 Networks Basics) - Define the term ‘Packet’ in the context of IT
(Networks L1 Networks Basics) - Define the term ‘Protocol’ in the context of IT
(Networks L2 Wireless Networks) - How does a Wireless device connect to the internet through via a LAN?
The device sends and revives Data through Radio Waves (WiFi) to the Router which has a Wired connection to the desired Server via Network Backbone Cables (the wider Internet).
(Networks L2 Wireless Networks) - State the Advantages of Wireless Networking
Increased Mobility, Simplicity of Installation, Wider Network reach, More Network Flexibility, Reduced Cost (over time), Increased Scalability
(Networks L2 Wireless Networks) - State the Disadvantages of Wireless Networking
Setup can be Difficult, Increased Risk of Unauthorised Access, Significantly Slower than Wired Connections, Network Stability Issues are more common (due to distance and Interference)
(Networks L2 Wireless Networks) - What does CSMA(CD / CA) Stand For?
Carrier Sense Multiple Access (Collision Detection / Collision Avoidance)
(Networks L2.5 Wired Networks) - What is CSMA(CA)? and What is it’s purpose for?
CSMA(CA) is a Protocol often used in Wired Connections to Minimise the risk of a Data Collision prior to it, the Protocol works by alerting other Networks Users to Pause interacting before itself outputting traffic
(Networks L2.5 Wired Networks) - What is CSMA(CD)? and What is it’s purpose for?
CSMA(CD) is a Protocol used in Wired Networks to Reduce the Recovery Time after a Data Collision, this is accomplished by Resending the Data Packet whenever a conflict occurs. It is also more Efficient than CSMA(CA)
(Networks L3 Wired Networks) - Layers of a Coax Cable (Inner Layers to Outer)
Conducting core, Insulation, Braided shielding and an outer sheath.
(Networks L3 Wired Networks) - State the order of colors used in ‘Straight Through’ Ethernet Cables
Striped Orange, Orange, Striped Green, Blue, Striped Blue, Green, Striped Brown, Brown
(Networks L3 Wired Networks) - State 5 Benefits of Wired Connections
- Speed - Data travels faster.
- Security - Harder to access the network without permission.
- Distance - The user can access the network from further away.
- Costs - Simple cable configurations are cheaper than wireless ones (as they usually require specialist kit).
- Less Interference - Wireless networks can be affected by nearby traffic.
(Networks L10 Layer TCP/IP) - What is a TCP/IP Stack?
A TCP/IP stack consist of lots of individual protocols all working together to allow efficient communication
(Networks L10 Layer TCP/IP) - What are the TCP/IP Stack Levels?
Application Layer, Transport Layer, Internet Layer and The Network Interface Layer
(Networks L10 Layer TCP/IP) - What does the Application Layer do?
Application layer interacts with software applications to implement a communicating component. The interpretation of data by the application program is always outside the scope of the OSI model.
(Networks L10 Layer TCP/IP) - What does the Transport Layer do?
It determines how much data should be sent where and at what rate. This layer builds on the message which are received from the application layer. It helps ensure that data units are delivered error-free and in sequence.
(Networks L10 Layer TCP/IP) - What does the Internet Layer do?
The Internet layer offers the functional and procedural method for transferring variable length data sequences from one node to another with the help of various networks. They are responsible for Routing Protocols, Multicast Group Management, Network-Layer Address Assessment.
(Networks L10 Layer TCP/IP) - What does the The Network Interface Layer do?
Network Interface Layer is this layer of the four-layer TCP/IP model. This layer is also called a network access layer. It helps you to defines details of how data should be sent using the network. It also includes how bits should optically be signalled by hardware devices which directly interfaces with a network medium, like coaxial, optical, coaxial, fibre, or twisted-pair cables.
