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NEW QUESTION: 1
A smart Card that has two chips with the Capability of utilizing both Contact and
Contactless formats is called:
A. Contact Smart Cards
B. Contactless Smart Cards
C. Combi Cards
D. Hybrid Cards
Answer: D
Explanation:
This is a contactless smart card that has two chips with the capability of utilizing both contact and contactless formats.
Two additional categories of cards are dual-interface cards and hybrid cards which is mentioned above.
Hybrid Card
A hybrid card has two chips, one with a contact interface and one with a contactless interface. The two chips are not interconnected.
Dual-Interface card
Do not confuse this card with the Hybrid Card. This one has only one chip. A dual-interface card has a single chip with both contact and contactless interfaces. With dual-interface cards, it is possible to access the same chip using either a contact or contactless interface with a very high level of security.
Inner working of the cards
The chips used in all of these cards fall into two categories as well: microcontroller chips and memory chips. A memory chip is like a small floppy disk with optional security. Memory chips are less expensive than microcontrollers but with a corresponding decrease in data management security. Cards that use memory chips depend on the security of the card reader for processing and are ideal for situations that require low or medium security.
A microcontroller chip can add, delete, and otherwise manipulate information in its memory.
A microcontroller is like a miniature computer, with an input/output port, operating system, and hard disk. Smart cards with an embedded microcontroller have the unique ability to store large amounts of data, carry out their own on-card functions (e.g., encryption and digital signatures) and interact intelligently with a smart card reader.
The selection of a particular card technology is driven by a variety of issues, including:
Application dynamics
Prevailing market infrastructure
Economics of the business model
Strategy for shared application cards
Smart cards are used in many applications worldwide, including:
Secure identity applications - employee ID badges, citizen ID documents, electronic passports, driver's licenses, online authentication devices
Healthcare applications - citizen health ID cards, physician ID cards, portable medical records cards
Payment applications - contact and contactless credit/debit cards, transit payment cards
Telecommunications applications - GSM Subscriber Identity Modules, pay telephone payment cards
The following answers are incorrect:
Contact Smart Cards
A contact smart card must be inserted into a smart card reader with a direct connection to a conductive contact plate on the surface of the card (typically gold plated). Transmission of commands, data, and card status takes place over these physical contact points.
Contactless Smart Cards
A contactless card requires only close proximity to a reader. Both the reader and the card have antennae, and the two communicate using radio frequencies (RF) over this contactless link. Most contactless cards also derive power for the internal chip from this electromagnetic signal. The range is typically one-half to three inches for non-battery- powered cards, ideal for applications such as building entry and payment that require a very fast card interface.
Combi Card
Are similar to Hybrid cards only they contain only one set of circuitry as apposed to two.
The following reference(s) were/was used to create this question:
Smart Card Primer at: http://www.smartcardalliance.org/pages/smart-cards-intro-primer

NEW QUESTION: 2
データベースは複雑なクエリの実行を伴うDSSワークロードをサポートしています:現在、ライブラリ・キャッシュは分析のための理想的なワークロードが含まれています。ライブラリ・キャッシュにキャッシュされたアプリケーションの一部のクエリを分析します。
インデックスの効率的な使用に関する推奨事項およびクエリのパフォーマンスを改善するためのマテリアライズド・ビューを受け取るために、何をしなければなりませんか。
A. ライブラリ・キャッシュにキャッシュされたクエリが含まれているSTSを作成し、STSで取得したワークロードにSQLアクセス・アドバイザを実行します。
B. ライブラリ・キャッシュにキャッシュされたクエリを含むSQLチューニング・セット（STS）を作成し、STSで取得したワークロードにSQLチューニング・アドバイザ（STA）を実行します。
C. ライブラリ・キャッシュにキャッシュされたクエリが含まれているSTSを作成し、STSで取得したワークロードにSQLパフォーマンス・アナライザ（SPA）を実行します。
D. 自動ワークロード・リポジトリモニター（ADDM）を実行します。
Answer: A
Explanation:
Explanation
* SQL Access Advisor is primarily responsible for making schema modification recommendations, such as adding or dropping indexes and materialized views. SQL Tuning Advisor makes other types of recommendations, such as creating SQL profiles and restructuring SQL statements.
* The query optimizer can also help you tune SQL statements. By using SQL Tuning Advisor and SQL Access Advisor, you can invoke the query optimizer in advisory mode to examine a SQL statement or set of statements and determine how to improve their efficiency. SQL Tuning Advisor and SQL Access Advisor can make various recommendations, such as creating SQL profiles, restructuring SQL statements, creating additional indexes or materialized views, and refreshing optimizer statistics.
Note:
* Decision support system (DSS) workload
* The library cache is a shared pool memory structure that stores executable SQL and PL/SQL code. This cache contains the shared SQL and PL/SQL areas and control structures such as locks and library cache handles.
References:

NEW QUESTION: 3
Which approval level deploys a resource but withholds access until approval is granted?
A. The pre-request level
B. The post-approval level
C. The pre-approval level
D. The post-request level
Answer: B