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Questions and Answers
What is the most popular algorithm for public key encryption?
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?
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?
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?
What is the purpose of a hash function in cryptography?
In public key encryption, who creates both the public and private keys for authentication?
In public key encryption, who creates both the public and private keys for authentication?
What is the main challenge in determining the private key from the public key in RSA encryption?
What is the main challenge in determining the private key from the public key in RSA encryption?
Which web server is preferred for its low memory usage and ability to handle high traffic?
Which web server is preferred for its low memory usage and ability to handle high traffic?
What type of web services use XML for complex APIs, particularly for sensitive transactions like financial services?
What type of web services use XML for complex APIs, particularly for sensitive transactions like financial services?
Which type of web services use HTTP methods for server-to-client communication and often require OAuth user authentication?
Which type of web services use HTTP methods for server-to-client communication and often require OAuth user authentication?
What are proxy servers primarily used for?
What are proxy servers primarily used for?
Which architecture style is REST based on?
Which architecture style is REST based on?
What is the main purpose of load balancing in web servers?
What is the main purpose of load balancing in web servers?
What is the purpose of hash functions like MD5 and SHA in secure electronic commerce?
What is the purpose of hash functions like MD5 and SHA in secure electronic commerce?
What is the primary role of certificate authorities in secure electronic commerce?
What is the primary role of certificate authorities in secure electronic commerce?
What is the function of SSL/TLS protocols in electronic commerce?
What is the function of SSL/TLS protocols in electronic commerce?
What is the significance of SSL operating on port 443 in electronic commerce?
What is the significance of SSL operating on port 443 in electronic commerce?
What is the purpose of load balancing hardware and server farms in electronic commerce?
What is the purpose of load balancing hardware and server farms in electronic commerce?
How are message digests created and used in secure electronic commerce?
How are message digests created and used in secure electronic commerce?
Which technology is commonly used in AJAX to fetch data from a server?
Which technology is commonly used in AJAX to fetch data from a server?
What are the various data formats supported by AJAX?
What are the various data formats supported by AJAX?
Which technologies are crucial for dynamic display and interaction in AJAX applications?
Which technologies are crucial for dynamic display and interaction in AJAX applications?
What is a critical consideration in AJAX implementation to protect data integrity and prevent unauthorized access?
What is a critical consideration in AJAX implementation to protect data integrity and prevent unauthorized access?
Who is credited with inventing AJAX?
Who is credited with inventing AJAX?
Which application is cited as an example of employing AJAX behind the scenes?
Which application is cited as an example of employing AJAX behind the scenes?
Which web service technology utilizes simple operations such as put, get, post, delete to perform actions on resources?
Which web service technology utilizes simple operations such as put, get, post, delete to perform actions on resources?
Which web service technology is described as a remote procedure call protocol with XML as an encoding and HTTP as a transport?
Which web service technology is described as a remote procedure call protocol with XML as an encoding and HTTP as a transport?
Which web service technology offers a very simple protocol encoded in JSON and is similar to XML-RPC?
Which web service technology offers a very simple protocol encoded in JSON and is similar to XML-RPC?
Which web service technology is described as a protocol for exchanging XML-based messages, which is more robust but also more complex to use?
Which web service technology is described as a protocol for exchanging XML-based messages, which is more robust but also more complex to use?
Which web service technology is platform and language-independent, standards-based, and can be used in the presence of firewalls?
Which web service technology is platform and language-independent, standards-based, and can be used in the presence of firewalls?
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?
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?
What is the most popular algorithm for public key encryption?
What is the most popular algorithm for public key encryption?
What is the key length typically for the public key in RSA encryption?
What is the key length typically for the public key in RSA encryption?
What is involved in determining the private key from the public key in RSA encryption?
What is involved in determining the private key from the public key in RSA encryption?
Who creates both the public and private keys for authentication in public key encryption?
Who creates both the public and private keys for authentication in public key encryption?
What is the purpose of hash functions like MD5 and SHA in secure electronic commerce?
What is the purpose of hash functions like MD5 and SHA in secure electronic commerce?
Which architecture style is REST based on?
Which architecture style is REST based on?
What is the significance of SSL operating on port 443 in electronic commerce?
What is the significance of SSL operating on port 443 in electronic commerce?
What is the primary purpose of a Certificate Authority (CA) in secure electronic commerce?
What is the primary purpose of a Certificate Authority (CA) in secure electronic commerce?
What is the significance of TLS in the context of secure electronic commerce?
What is the significance of TLS in the context of secure electronic commerce?
What is the function of load balancing hardware in web server farms for electronic commerce?
What is the function of load balancing hardware in web server farms for electronic commerce?
What is the main difference between SSL and TLS protocols in electronic commerce?
What is the main difference between SSL and TLS protocols in electronic commerce?
What is the key consideration in estimating server performance requirements for electronic commerce?
What is the key consideration in estimating server performance requirements for electronic commerce?
What is the primary role of hash functions like MD5 and SHA in secure electronic commerce?
What is the primary role of hash functions like MD5 and SHA in secure electronic commerce?
What is the primary function of SSL protocol in electronic commerce?
What is the primary function of SSL protocol in electronic commerce?
What is the primary function of load balancing hardware in web servers?
What is the primary function of load balancing hardware in web servers?
What is the main advantage of using NginX over Apache as a web server?
What is the main advantage of using NginX over Apache as a web server?
In the context of proxy servers, what is the primary function of forward proxy servers?
In the context of proxy servers, what is the primary function of forward proxy servers?
What is the role of NginX when used as a reverse proxy in web server architecture?
What is the role of NginX when used as a reverse proxy in web server architecture?
What is the purpose of proxy servers in web server architecture?
What is the purpose of proxy servers in web server architecture?
Which factor primarily influences Apache's performance in web server environments?
Which factor primarily influences Apache's performance in web server environments?
What is the second choice after NginX for web server usage, based on the provided text?
What is the second choice after NginX for web server usage, based on the provided text?
What are the three fundamental aspects of the REST Design Pattern?
What are the three fundamental aspects of the REST Design Pattern?
Which web service technology is a protocol for exchanging XML-based messages, more robust but also more complex to use?
Which web service technology is a protocol for exchanging XML-based messages, more robust but also more complex to use?
What is the primary role of Amazon Associates web services?
What is the primary role of Amazon Associates web services?
What is the main purpose of Apple's iCloud service for developers?
What is the main purpose of Apple's iCloud service for developers?
What is a best practice for REST in providing a URI for each resource?
What is a best practice for REST in providing a URI for each resource?
What is the recommended approach for HTTP GET requests in REST?
What is the recommended approach for HTTP GET requests in REST?
What is the significance of the 5gb free storage in Apple's iCloud service?
What is the significance of the 5gb free storage in Apple's iCloud service?
What is the main difference between SOAP and REST in terms of protocol for message exchange?
What is the main difference between SOAP and REST in terms of protocol for message exchange?
What is the primary purpose of RESTful systems following Fielding's REST principles?
What is the primary purpose of RESTful systems following Fielding's REST principles?
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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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