How does code coverage help in identifying untested parts of the code?
- Code coverage highlights areas of code that are not executed during testing.
- Code coverage identifies parts of the code that are executed during testing.
- Code coverage indicates the effectiveness of unit tests.
- Code coverage measures the percentage of code executed by test cases.
Code coverage analysis helps in identifying untested parts of the code by highlighting areas that have not been executed during testing. This allows developers to focus their testing efforts on these specific areas to ensure comprehensive test coverage.
Which NoSQL database is known for its speed, simplicity, and scalability, often used for caching and session management?
- Cassandra
- Couchbase
- MongoDB
- Redis
Redis is an in-memory data structure store that is known for its speed, simplicity, and versatility, making it popular for caching purposes.
Suppose you're building an application where certain database fields can be null. How would you handle such scenarios using the database/sql package in Go?
- Convert null fields to a default value during scanning to avoid handling nulls.
- Ignore nullable fields during scanning. Treat them as empty values.
- Use custom scanning functions to handle null values explicitly.
- Use the Scan method to scan nullable fields into sql.Null types. Check if the valid flag is true to determine if the field is null or not.
When dealing with nullable fields in Go's database/sql package, you should use the Scan method to scan nullable fields into sql.Null types. You can then check if the valid flag is true to determine if the field is null or not. This ensures proper handling of null values.
What is the standard port for HTTP communication?
- 22
- 443
- 80
- 8080
The standard port for HTTP communication is port 80. This port is used for unencrypted communication over the HTTP protocol.
The _______ protocol is widely used for securing communication between web servers and clients for authentication purposes.
- HTTPS
- HTTP
- TCP
- UDP
The correct option is HTTPS. HTTPS (Hypertext Transfer Protocol Secure) is the secure version of HTTP, providing encrypted communication between web servers and clients, ensuring secure authentication.
In Go templating, what syntax is used to denote a variable?
- [[ VarName ]]
- {% varName %}
- {{ $VarName }}
- {{ .VarName }}
In Go templating, the syntax {{ .VarName }} is used to denote a variable. The dot (.) signifies the current context, and VarName represents the name of the variable. This syntax is used to insert dynamic content into templates by accessing variables passed to the template during execution.
In Go, the _______ operator is used to perform division and return the quotient.
- %
- *
- +
- /
In Go, the / operator is used for division and returns the quotient of the division operation. For example, 10 / 3 evaluates to 3, because integer division truncates the result. To get the remainder, the % operator is used.
What is a struct in Go used for?
- Define and group together constants
- Define and group together fields under a single type
- Define and group together functions
- Define and group together variables
In Go, a struct is used to define and group together fields under a single type. It allows for the creation of complex data types by combining different types of fields.
_______ in Go allows a struct to anonymously embed other structs.
- Aggregation
- Composition
- Inheritance
- Polymorphism
Composition in Go refers to the ability to embed one struct within another struct. This feature allows the outer struct to inherit the fields and methods of the embedded struct, enabling code reuse and modular design without explicitly using inheritance.
Gorilla Mux allows you to define route patterns with _______ and route constraints.
- Dynamic Segments
- HTTP Methods
- Query Parameters
- Static Segments
Gorilla Mux allows you to define route patterns using dynamic segments, which enables capturing parts of the URL and using them as variables in your handlers. This flexibility enhances routing capabilities.
Which of the following statements about methods in Go is true?
- Methods are functions
- Methods can be declared
- Methods can only be
- Methods cannot be declared
In Go, methods can be declared on named types, including struct types, allowing for defining behaviors of those types.
You're designing an e-commerce platform where users can have different roles such as admin, customer, and seller. How would you manage access control for each role?
- Implement access control lists (ACLs) for each user role to define their permissions.
- Implement role-based access control (RBAC) where each role is assigned specific permissions to access resources within the platform.
- Use attribute-based access control (ABAC) where access decisions are based on attributes associated with users and resources.
- Use identity-based access control (IBAC) where access is determined based on the identity of the user.
Role-based access control (RBAC) is a suitable approach for managing access control in this scenario because it allows administrators to define roles such as admin, customer, and seller, and assign specific permissions to each role. This simplifies access management and ensures that users only have access to the resources they need based on their roles.