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You are confusing your units. M = mega m = milli B = byte b = bit When referring to disk usage, we measure throughput in megabytes per second, or MB/s. Notice the capital M for mega and the capital …

According to the Section 5.1 of RFC 5321: If an empty list of MXs is returned, the address is treated as if it was associated with an implicit MX RR, with a preference of 0, pointing to that host. T …

Get a managed switch that supports VLANs. Preferably from one of the bigger names, like Cisco, Juniper, Arista, HP, Dell, or Extreme. You can get a Cisco 3500 series on eBay for about $100. Get a rout …

It appears to be a punchdown block most likely used for analog telephone lines.

What you want to do is create a private "backup" VLAN on a dedicated subnet. You need to assign it an unused IP range and connect a dedicated "backup" NIC to this VLAN. Make sure these interfaces don …

I'm going to venture a guess that you're running the command prompt as another user or as "Administrator" and you have UAC enabled. When this happens, you've mapped the drive under a different user co …

Subnets are easy if you're using netmasks that are on 8-bit boundaries. /22 or /21 for example are a little harder to calculate in your head unless you do it all day long. A subnet calculator will sho …

Inside-to-inside NAT aka NAT loopback solves hairpin NAT issues when accessing a web server on the external interface of an ASA or similar device from computers on the internal interface. This prevent …

Yes. Assuming that the unmanaged switch is just a dumb L2 device, it will be on the same L2 domain as everything else on VLAN 3.

Virtualization. 6 is the least I'd want on a ESXi host, especially if you're using iSCSI. 2 for storage 2 for management/vMotion 2 for data Or if you don't use iSCSI, you can separate management an …

Dark fiber is just fiber that is not active. It is usually dark because it is planned surplus for future growth, this is normal.

You need a router to route traffic between the two subnets. Usually, you would have a core layer 3 switch (router) that will handle this. You can also use something like RRAS to turn a Windows Server …

You're going to want to get in touch with a major vendor like Cisco or Aruba. When you get that many people in a contained area, throughput isn't your (main) problem, interference is. For a deployme …

Product recommendations are off-topic here, but if you want reliability, I'd strongly recommend staying away from SOHO gear and ponying up for a couple of enterprise-grade APs. You may have sticker-sh …

Neither should have a gateway set, since there is no routing going on. Configure both interfaces to be on the same subnet. Then create a persistent static route on both machines that point to each oth …