May 2024
Intermediate
248 pages
6h 59m
Japanese
Content preview from 図解まるわかり 仮想化のしくみ
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ネットワークの仮想化には、図3-1 に挙げたようなものがあります。
VLAN（Virtual Local Area Network）は、物理的なネットワークを論理
的に分割する技術です。複数のネットワークを1 つの物理的なネットワー
ク上で分割することで、セキュリティの向上やネットワークの効率化が可
能になります。VLANを利用することで、同じ物理的なネットワーク上で
も異なるセグメント同士で通信を行うことができます。例えば、企業内の
部署ごとにVLANを設定してネットワークセグメントを分割することで、
セキュリティを強化できます。
QoS（Quality of Service）は、ネットワーク上での通信品質を保証する
技術です。ネットワーク上での通信は、複数のデバイスやアプリケーショ
ンが同時に行われるため、通信品質が低下することがありますが、QoSを
利用することで、通信品質を保証できます。例えば、ビデオ通話やストリ
ーミングなどのリアルタイム通信には、遅延やパケットロスが許容できな
いため、優先的に通信帯域を割り当てることができます。一方で、メール
やファイル転送などの通信には、通信品質が低下しても問題がないため、
低い優先度で通信帯域を割り当てることができます。
VPN（Virtual Private Network）は、仮想的なプライベートネットワー
クを構築する技術です。VPNを利用することで、インターネット上での通
信を暗号化し、通信を盗聴や傍受から保護することができます。
VPNは、リモートアクセス ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.