What term is used to describe a collection of data elements that have a specific order and can be indexed?
- Array
- Function
- String
- Variable
An 'array' is a data structure in programming that allows you to store a collection of data elements in a specific order, and each element can be accessed using an index.
An organization's IT department is often seen as a cost center and not a strategic partner. Which approach can help shift this perception and position IT as a driver of business value?
- Business Alignment and Innovation
- Cost Cutting and Outsourcing
- Legacy Systems and Maintenance
- Siloed Operations and Autonomy
To change the perception of IT, 'Business Alignment and Innovation' is essential. This approach involves aligning IT strategies with the business objectives and focusing on innovation to show how IT can directly contribute to business success, making it a strategic partner.
What term is used to describe a collection of data elements that have a specific order and can be indexed?
- Array
- Function
- String
- Variable
An 'array' is a data structure in programming that allows you to store a collection of data elements in a specific order. Each element in an array can be accessed using an index, which is a numerical reference. Arrays are commonly used for organizing and manipulating data efficiently.
An organization wants to run multiple isolated Linux-based systems on a single host for testing purposes. Which lightweight virtualization technology, operating at the container level, would be suitable?
- Docker
- KVM
- VMware
- Xen
Docker is a containerization platform that allows you to run multiple isolated instances on a single host efficiently. It's known for its lightweight nature and is widely used for testing and deployment.
The _______ in an operating system acts as a bridge between application software and hardware.
- Compiler
- Firewall
- Kernel
- Router
The 'Kernel' in an operating system serves as the core component that manages the communication between application software and hardware, facilitating the execution of tasks and resource management. It is an essential bridge between software and hardware.
In virtualization, the primary operating system running on the host machine is often called the _______.
- Emulator
- Guest OS
- Hypervisor
- Kernel
The primary operating system running on the host machine in virtualization is often referred to as the 'Hypervisor.' A hypervisor manages and facilitates the execution of multiple guest operating systems.
A company wants to ensure that their cloud-hosted application remains available even if one entire data center fails. What should they consider implementing?
- Disaster Recovery Plan
- Failover
- Load Balancing
- Redundancy
To ensure high availability, implementing 'redundancy' is essential. This means duplicating critical components across multiple data centers, ensuring the application remains available even if one center fails.
Which scheduling algorithm in operating systems gives the shortest job the highest priority?
- First-Come-First-Served (FCFS)
- Priority Scheduling
- Round Robin
- Shortest Job Next (SJN)
The scheduling algorithm that gives the shortest job the highest priority is "Shortest Job Next" (SJN). This approach minimizes waiting time and helps to execute shorter tasks quickly, leading to optimal resource utilization.
You are a network administrator and receive reports of intermittent connectivity to a cloud-based application. Which tool would you first use to check if the issue is due to packet loss?
- Ping
- Traceroute
- netstat
- nslookup
To diagnose packet loss issues, the first tool you would use is 'Ping.' Ping sends ICMP packets to the target server and measures round-trip time and packet loss, helping identify network problems.
To reduce latency and improve load times for global users, companies use a cloud service called _______.
- Content Delivery Network (CDN)
- Domain Name System (DNS)
- Internet Service Provider (ISP)
- Web Hosting Service
Companies use a 'Content Delivery Network (CDN)' to reduce latency and improve load times for global users. CDNs distribute content to edge servers around the world, ensuring faster access to content for users.