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When describing network traffic flow, if &nbsp;a device is attached to an access layer switch and that is connected to a distribution layer switch and then to a core switch, is that correct to say that the access layer switch is up-stream from the distro switch and the core switch is down-stream from both the access and distro switches? &nbsp;<br />
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If there's a Firewall connected to the Coreswitch that seperates your network &nbsp;from the Internet, would that then be downstream from the core switch? &nbsp;Or do I have it in reverse? &nbsp;with all of the above(?), given that when you're downloading from the Internet the traffic is going &quot;down-stream&quot; to your client device .
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When describing network traffic flow, if  a device is attached to an access layer switch and that is connected to a distribution layer switch and then to a core switch, is that correct to say that the access layer switch is up-stream from the distro switch and the core switch is down-stream from both the access and distro switches?  

If there's a Firewall connected to the Coreswitch that seperates your network  from the Internet, would that then be downstream from the core switch?  Or do I have it in reverse?  with all of the above(?), given that when you're downloading from the Internet the traffic is going "down-stream" to your client device .

upstream and downstream

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.

Networking Hardware-Other

Network Management involves issues that are independent of specific hardware or software, including email policies, upgrade planning, backup scheduling and working with managed service providers for Desktop-As-A-Service (DaaS), Software-As-A-Service (SaaS) and the like through the use of tools, coupled with manufacturer standards, best practice guidelines, policies and procedures plus all other relevant documentation. Network management also includes monitoring, alerting and reporting, management reporting, planning for device or service updates, the backup of configurations, the setting of key performance indicators and measures (KPIs/KPMs), associated service level agreements and problem records as part of the IT Service Management (ITSM) framework.

Network Management

Network Operations includes asset management, help-desk supervision, security and user policies, infrastructure administration and anything else that affects the operation of your network. Discussions will include those of best practices in platforms, configurations, performance, security and accounting.