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NEW QUESTION: 1
10,000個のデータポイントと150個の特徴を持つ正規化された数値特徴セットを含む、マルチクラス分類タスク用に作成されたデータセットがあります。
データポイントの75％をトレーニングに、25％をテストに使用します。 Pythonでscikit-learn機械学習ライブラリを使用しています。 Xを使用して機能セットを示し、Yを使用してクラスラベルを示します。
次のPythonデータフレームを作成します。
主成分分析（PCA）メソッドを適用して、トレーニングセットとテストセットの両方でフィーチャセットの次元を10フィーチャに減らす必要があります。
どのようにコードセグメントを完成させるべきですか？回答するには、回答エリアで適切なオプションを選択します。
注：それぞれの正しい選択には1ポイントの価値があります。

Answer:
Explanation:

Box 1: PCA(n_components = 10)
Need to reduce the dimensionality of the feature set to 10 features in both training and testing sets.
Example:
from sklearn.decomposition import PCA
pca = PCA(n_components=2) ;2 dimensions
principalComponents = pca.fit_transform(x)
Box 2: pca
fit_transform(X[, y])fits the model with X and apply the dimensionality reduction on X.
Box 3: transform(x_test)
transform(X) applies dimensionality reduction to X.
参照：
https://scikit-learn.org/stable/modules/generated/sklearn.decomposition.PCA.html

NEW QUESTION: 2
展示を参照してください。

DMVPN Phase1を使用する既存のネットワークにDMVPNフェーズ3を実装しています。 NHRPを設定しますが、スポークツースポークトンネルの作成は失敗します。 問題を解決するためにどのアクションを実行しますか？
A. mGREトンネルモードを使用して、スポークのトンネルを設定します。
B. NHRP設定からマルチキャストフラグを削除します。
C. ポイントツーポイントトンネルモードを使用して、ハブのトンネルを構成します。
D. ハブ構成からNHRPリダイレクトを削除します。
Answer: A
Explanation:
Reference: http://www.patrickdenis.biz/blog/dmvpn-phase-1-2-and-3/

NEW QUESTION: 3
シナリオ：ジョーは自宅のコンピューターの電源を入れて、個人のオンラインバンキングにアクセスします。彼がURLwww.bank.comを入力したとき。 Webサイトは表示されますが、これまでサイトにアクセスしたことがないかのように、資格情報を再入力するように求められます。彼がWebサイトのURLを詳しく調べたところ、サイトが安全ではなく、Webアドレスが異なって見えることがわかりました。彼が経験している攻撃の種類は何ですか？
A. ARPキャッシュポイズニング
B. DoS攻撃
C. DNSハイジャック
D. DHCPスプーフィング
Answer: B
Explanation:
Explanation
A Distributed Denial of Service (DDoS) attack may be a non-intrusive internet attack made to require down the targeted website URL or slow it down by flooding the network, server or application with fake traffic.
When against a vulnerable resource-intensive endpoint, even a small amount of traffic is enough for the attack to succeed.Distributed Denial of Service (DDoS) attacks are threats that website owners must familiarize themselves with as they're a critical piece of the safety landscape. Navigating the varied sorts of DDoS attacks are often challenging and time consuming. to assist you understand what a DDoS attack is and the way to stop it, we've written the subsequent guide.
Understanding a DDoS AttackThe objective of a DDoS attack is to stop legitimate users from accessing your website URL. For a DDoS attack to achieve success , the attacker must send more requests than the victim server can handle. differently successful attacks occur is when the attacker sends bogus requests.
How does a DDoS Attack Work?The DDoS attack will test the bounds of an internet server, network, and application resources by sending spikes of faux traffic. Some attacks are just short bursts of malicious requests on vulnerable endpoints like search functions. DDoS attacks use a military of zombie devices called a botnet.
These botnets generally contains compromised IoT devices, websites, and computers.When a DDoS attack is launched, the botnet will attack the target and deplete the appliance resources. A successful DDoS attack can prevent users from accessing an internet site or slow it down enough to extend bounce rate, leading to financial losses and performance issues.
What is the Goal Behind a DDoS Attack?The main goal of an attacker that's leveraging a Denial of Service (DoS) attack method is to disrupt an internet site availability:* the web site can become slow to reply to legitimate requests.* the web site are often disabled entirely, making it impossible for legitimate users to access it.Any sort of disruption, counting on your configuration, are often devastating to your business.

NEW QUESTION: 4
Which System Architect interface utility is used for viewing, navigating, and opening diagrams and definitions?
A. Encyclopedia Navigator
B. Properties Window
C. Diagram Workspace
D. Encyclopedia Explorer
Answer: D