Web Service Technologies Quiz 1
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Questions and Answers

What is the most popular algorithm for public key encryption?

  • AES
  • RSA (correct)
  • MD5
  • SHA-256

    • What is the key length typically for the public key in RSA encryption?

  • 2048 bits
  • 512 bits
  • 1024 bits (correct)
  • 4096 bits

    • What is involved in determining the private key from the public key in RSA encryption?

  • Matrix multiplication
  • Modular arithmetic
  • Exponentiation
  • Factorizing large numbers (correct)

    • What is the purpose of a hash function in cryptography?

    <p>To map large objects to unique small values</p> Signup and view all the answers

    In public key encryption, who creates both the public and private keys for authentication?

    <p>Sender</p> Signup and view all the answers

    What is the main challenge in determining the private key from the public key in RSA encryption?

    <p>Efficient factoring of large numbers</p> Signup and view all the answers

    Which web server is preferred for its low memory usage and ability to handle high traffic?

    <p>NginX</p> Signup and view all the answers

    What type of web services use XML for complex APIs, particularly for sensitive transactions like financial services?

    <p>SOAP</p> Signup and view all the answers

    Which type of web services use HTTP methods for server-to-client communication and often require OAuth user authentication?

    <p>REST</p> Signup and view all the answers

    What are proxy servers primarily used for?

    <p>Caching</p> Signup and view all the answers

    Which architecture style is REST based on?

    <p>Distributed hypermedia systems</p> Signup and view all the answers

    What is the main purpose of load balancing in web servers?

    <p>Preventing overloading servers</p> Signup and view all the answers

    What is the purpose of hash functions like MD5 and SHA in secure electronic commerce?

    <p>Mapping values into numbers and creating digital signatures</p> Signup and view all the answers

    What is the primary role of certificate authorities in secure electronic commerce?

    <p>Verifying the identity of entities and issuing digitally signed electronic certificates</p> Signup and view all the answers

    What is the function of SSL/TLS protocols in electronic commerce?

    <p>Providing end-to-end security, authentication, encryption, and message integrity</p> Signup and view all the answers

    What is the significance of SSL operating on port 443 in electronic commerce?

    <p>It is transparent to users except for the 'https' in the URL</p> Signup and view all the answers

    What is the purpose of load balancing hardware and server farms in electronic commerce?

    <p>Distributing web requests and preventing single points of failure</p> Signup and view all the answers

    How are message digests created and used in secure electronic commerce?

    <p>Created using hashing algorithms and used to verify message integrity</p> Signup and view all the answers

    Which technology is commonly used in AJAX to fetch data from a server?

    <p>XMLHttpRequest object</p> Signup and view all the answers

    What are the various data formats supported by AJAX?

    <p>JSON, HTML, and plain text</p> Signup and view all the answers

    Which technologies are crucial for dynamic display and interaction in AJAX applications?

    <p>JavaScript and the Document Object Model (DOM)</p> Signup and view all the answers

    What is a critical consideration in AJAX implementation to protect data integrity and prevent unauthorized access?

    <p>Security</p> Signup and view all the answers

    Who is credited with inventing AJAX?

    <p>Jesse James Garrett</p> Signup and view all the answers

    Which application is cited as an example of employing AJAX behind the scenes?

    <p>Google Maps</p> Signup and view all the answers

    Which web service technology utilizes simple operations such as put, get, post, delete to perform actions on resources?

    <p>REST</p> Signup and view all the answers

    Which web service technology is described as a remote procedure call protocol with XML as an encoding and HTTP as a transport?

    <p>XML-RPC</p> Signup and view all the answers

    Which web service technology offers a very simple protocol encoded in JSON and is similar to XML-RPC?

    <p>JSON-RPC</p> Signup and view all the answers

    Which web service technology is described as a protocol for exchanging XML-based messages, which is more robust but also more complex to use?

    <p>SOAP</p> Signup and view all the answers

    Which web service technology is platform and language-independent, standards-based, and can be used in the presence of firewalls?

    <p>REST</p> Signup and view all the answers

    Which web service technology offers no built-in security features, encryption, or session management, but these can be added by building on top of HTTP?

    <p>REST</p> Signup and view all the answers

    What is the most popular algorithm for public key encryption?

    <p>RSA algorithm</p> Signup and view all the answers

    What is the key length typically for the public key in RSA encryption?

    <p>1024 digits</p> Signup and view all the answers

    What is involved in determining the private key from the public key in RSA encryption?

    <p>Factoring very large numbers</p> Signup and view all the answers

    Who creates both the public and private keys for authentication in public key encryption?

    <p>Sender</p> Signup and view all the answers

    What is the purpose of hash functions like MD5 and SHA in secure electronic commerce?

    <p>To map large objects to unique small values</p> Signup and view all the answers

    Which architecture style is REST based on?

    <p>Client-server</p> Signup and view all the answers

    What is the significance of SSL operating on port 443 in electronic commerce?

    <p>It is the default port for secure communication</p> Signup and view all the answers

    What is the primary purpose of a Certificate Authority (CA) in secure electronic commerce?

    <p>Verifying the identity of entities and issuing digitally signed electronic certificates</p> Signup and view all the answers

    What is the significance of TLS in the context of secure electronic commerce?

    <p>It provides secure transmission of data and is supported by all major browsers</p> Signup and view all the answers

    What is the function of load balancing hardware in web server farms for electronic commerce?

    <p>Distributing web requests across multiple server machines</p> Signup and view all the answers

    What is the main difference between SSL and TLS protocols in electronic commerce?

    <p>TLS replaced SSL as a protocol</p> Signup and view all the answers

    What is the key consideration in estimating server performance requirements for electronic commerce?

    <p>Calculating bandwidth, time for request delivery, and result delivery</p> Signup and view all the answers

    What is the primary role of hash functions like MD5 and SHA in secure electronic commerce?

    <p>Mapping values into numbers, used in cryptographic hash functions</p> Signup and view all the answers

    What is the primary function of SSL protocol in electronic commerce?

    <p>Providing end-to-end security, authentication, encryption, and message integrity for electronic commerce</p> Signup and view all the answers

    What is the primary function of load balancing hardware in web servers?

    <p>Preventing requests from going to failed servers</p> Signup and view all the answers

    What is the main advantage of using NginX over Apache as a web server?

    <p>Lower memory usage and better performance</p> Signup and view all the answers

    In the context of proxy servers, what is the primary function of forward proxy servers?

    <p>Running on the client side and controlling access to restricted sites</p> Signup and view all the answers

    What is the role of NginX when used as a reverse proxy in web server architecture?

    <p>Improving Apache web server performance</p> Signup and view all the answers

    What is the purpose of proxy servers in web server architecture?

    <p>Acting as intermediaries between clients and servers</p> Signup and view all the answers

    Which factor primarily influences Apache's performance in web server environments?

    <p>RAM and connections</p> Signup and view all the answers

    What is the second choice after NginX for web server usage, based on the provided text?

    <p>Lighttpd</p> Signup and view all the answers

    What are the three fundamental aspects of the REST Design Pattern?

    <p>Client, servers, resources</p> Signup and view all the answers

    Which web service technology is a protocol for exchanging XML-based messages, more robust but also more complex to use?

    <p>SOAP</p> Signup and view all the answers

    What is the primary role of Amazon Associates web services?

    <p>To build more effective sponsored affiliate links to Amazon products</p> Signup and view all the answers

    What is the main purpose of Apple's iCloud service for developers?

    <p>To make information captured on any Apple device immediately available across all other Apple devices</p> Signup and view all the answers

    What is a best practice for REST in providing a URI for each resource?

    <p>Provide a URI for each resource that you want exposed</p> Signup and view all the answers

    What is the recommended approach for HTTP GET requests in REST?

    <p>Make all HTTP GETs side-effect free</p> Signup and view all the answers

    What is the significance of the 5gb free storage in Apple's iCloud service?

    <p>It places all information captured on any Apple device into the cloud</p> Signup and view all the answers

    What is the main difference between SOAP and REST in terms of protocol for message exchange?

    <p>SOAP uses XML-based message exchange, REST uses HTTP for simple operations</p> Signup and view all the answers

    What is the primary purpose of RESTful systems following Fielding's REST principles?

    <p>To represent resources as documents and invoke simple operations on them</p> Signup and view all the answers

    Study Notes

    Understanding REST, SOAP, and Other Web Service Technologies

    • Roy Fielding co-founded the Apache HTTP Project and the World Wide Web is an example of REST.
    • REST Design Pattern encompasses clients, servers, and resources, typically represented as documents.
    • REST uses simple operations (put, get, post, delete) to perform actions on resources, and it quickly gained popularity for its simplicity.
    • SOAP is a protocol for exchanging XML-based messages, which is more robust than most APIs need, but also more complex to use.
    • XML-RPC is a remote procedure call protocol with XML as an encoding and HTTP as a transport, simpler than SOAP but more complex than REST.
    • JSON-RPC is an RPC protocol encoded in JSON and offers a very simple protocol similar to XML-RPC.
    • REST services are platform and language-independent, standards-based, and can be used in the presence of firewalls.
    • REST offers no built-in security features, encryption, or session management, but these can be added by building on top of HTTP.
    • REST can handle complex requests, including multiple parameters, and supports various types of HTTP requests.
    • Amazon offers web services to associates, vendors, and developers, enabling them to build effective affiliate links, manage inventory, and integrate Amazon-driven functionality into their applications.
    • Apple's iCloud service places all information captured on any Apple device into the cloud, making it immediately available to all other Apple devices.
    • AJAX is a technique used in web development to create interactive and dynamic web applications, allowing web pages to be updated asynchronously without reloading the entire page.

    Web Server Load Balancing and Proxy Servers

    • Load balancing distributes requests to web servers based on load levels
    • Proximity-routing directs requests to the nearest geographically distributed server
    • Fault-masking avoids down web servers
    • Load balancing hardware prevents requests going to failed servers
    • Apache's performance depends on RAM and connections
    • NginX is preferred over Apache due to lower memory usage and better performance
    • Lighttpd is the second choice after NginX
    • NginX can be used as a reverse proxy to improve Apache web server performance
    • Proxy servers act as intermediaries between clients and servers
    • Forward proxy servers run on the client side and control access to restricted sites
    • Caching and validation help improve performance and security
    • Web Services include big web services, REST services, and cloud services

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    Related Documents

    CSCI571 Exam 2 Notes.pdf
    exam 2 part 1.pdf

    Description

    Test your knowledge of web service technologies with this quiz covering REST, SOAP, XML-RPC, JSON-RPC, and more. Explore the features, differences, and applications of these fundamental web service technologies.

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