May 2019
Beginner to intermediate
296 pages
6h 58m
Japanese
Content preview from IT用語図鑑 ビジネスで使える厳選キーワード256
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54
関連用語
用語に関連する話
用語の使用例
WANとLAN
ネットワークの範 囲を 表す
自宅 や オフィスなど、同じ建 物 の中などで 使 わ れる内 部 用の ネットワークを L A N と言う。一
方 、同じ 会 社 でも東 京と大 阪 など離 れ た 場 所 を 繋ぐネットワークの ような 、より広 い エリア
で 使 わ れ る ネ ット ワ ー ク を W A N と 言 い 、 電 気 通 信 事 業 者 が 提 供 す る ネ ット ワ ー ク を 使 用 す
る。インターネットも WAN の一種である。
有線と無線のネットワーク
自宅内でLAN を使うとき、ケーブ
ルを使った有線だけでなく、電波
を使った無線によるネットワー
クを構成している家庭が増えて
いる。
ノイズを減らすケーブル
自宅内で有線のネットワークを
作る場合、ツイストペアケーブル
と呼ばれる、電線を2本ずつより
合わせてノイズを受けにくくし
たケーブルが使われる。
拠点間を繋ぐ専用線
企業などで複数の拠点を接続す
る場合、特定の顧客専用に設置さ
れた回線を使い、通信内容のセ
キュリティや通信速度を確保し
ている。
▶
わん
▶
らん
Keyword
039
「私の家にはPCがたくさんあるけど、全部LANで繋がってるよ。」
インタ ー ネットとイントラ ネット
……P51
NAT とNAPT
……P62
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.