4 section Quizzes from course material

from end of each section 2, 3, 4 ---> from course end of section quizzes 3x 25 question + mini quizzes

What is the function of an operating system?

It acts as an intermediary between computer users and computer resources.

Which systems are types of operating systems?

Real-time systems

Which set of components make up the central processing unit (CPU)?

Arithmetic logic unit and control unit

The computer unit is made up of the arithmetic logic unit (ALU), the control unit (CU), and memory. However, the ALU and the CU form the CPU.

Which attribute of DRAM must a technician or developer consider ahead of time?

Refresh signal

What is the purpose of a computer operating system?

It functions as a resource manager

What is a feature of cloud-based operating systems?

They are primarily stateless.

Why do applications designed to work on one operating system not work on a different operating system?

Unique system calls

Which requirement should be understood when configuring a RAID 5 system for a client?

A minimum of three drives are required.

What is one reason why programmed I/O does not work well when the I/O device is a hard disk or a graphics display?

A complete instruction fetch–execute cycle must be performed to transfer each I/O data word.

Which type of storage devices are characterized by the fastest access times and data transfer rates?

Solid-state drives

Which kind of software are Mac OS X and Windows 10 programs?

Operating system (OS)

What is the next step to be performed to address storage drive issues after identifying recent changes and breaking down large problems?

Perform a system backup.

A client is utilizing servers, data storage, data backup, and software development platforms over an internet connection.

Which computing approach is being applied?

Cloud computing

Which type of memory packaging can support quad, triple, and dual channels?

DDR3 DIMM

A client recently experienced a hard drive failure and lost stored data. The client does not want to rely on a backup but does want to secure their data.

Which RAID configuration does this client need?

RAID 1: duplicates all date to second disk

Which component is responsible for creating and running a virtual machine instance on a host?

Hypervisor

What facilitates a guest system's ability to run applications designed for a different operating system?

Emulator

Which ability describes a security feature in virtualization?

Isolating the operating system when running multiple concurrent VMs

What is a temporary holding area for data and programs?

RAM

What is a key similarity between RAM and memory cards?

They are solid-state.

What is a key reason to implement a RAID 0 disk configuration?

To improve overall disk performance

Which operating system allows for its source code to be modified and redistributed?

Android

Which processors process in both 32 and 64 bits?

x86-64 processors

Which size data path do today's DIMMS use?

64-bit

Which type of processor memory is located on the processor itself?

Level 1 cache

What can a dual in-line memory module (DIMM) use to contain data as well as amplify a signal before writing the data to a module?

Registers

Which type of DRAM do modern laptops all use?

SO-DIMM

Which feature of a solid-state drive's flash memory ensures that the logical block addressing does not always address the same physical block’s drive?

Wear leveling

A client has recently purchased a CPU that references the amount of L1 cache in the list of features.

What is this referring to?

The amount of memory residing directly on the processor die (level 1 cache)

Which type of non-functional requirement (NFR) deals with how well a system and its data are protected against attacks?

Security

Which type of non-functional requirement (NFR) ensures that an updated database can return back in the event of update failures?

Reliability

Which non-functional requirement (NFR) deals with human factors, consistency, and documentation?

Usability

Which IDE is a Microsoft product and can be used to develop websites, web apps, and mobile apps?

Visual Studio

Which feature of an IDE provides a list of variables that are already declared in the program as the developer starts typing?

Autocomplete

Which IDE can you use to write programs for Python, Java, and C++ languages?

Eclipse

Which system hardening technique involves securing a data-based system's ports, data, permissions, and functions?

Server hardening

Which malware program can replicate quickly and spread from one computer to another by itself?

Computer worm

Which type of topology has all nodes connected to a central device?

Which type of topology has all nodes connected to a central device?

Which network device is considered passive in terms of how it connects to other devices?

Hub

Which type of network connects devices within the ranges of 30 feet or less?

Personal area network (PAN)

Which networking device can be programmed to make decisions to send packets from an input port to an output port based on IP addresses?

Router

Which TCP/IP suite layer handles the transport control protocol (TCP)?

Transport

Which protocol is responsible for internet protocol (IP) address to physical address translation in the TCP/IP suite?

Address resolution protocol (ARP)

Which network security measure deals with encrypting the data as it traverses the network?

Confidentiality

Which network device offers the capability of centralizing the control of resources and compartmentalizing files for improved reliability?

Server

What do networks use to communicate with resources and manage the flow of data across the network?

Network operating system (NOS)

Which network resources can be on the cloud or over the internet?

Choose 2 answers.

Applications and disk storage

Which network topology provides the best fault tolerance?

Mesh

What is the security device that protects a network from hackers and can also simultaneously prevent computers within the network from accessing undesirable content on the internet?

Firewall

What is the main protocol at the internet layer of the TCP/IP layer and also considered the workhorse of the TCP/IP?

Internet protocol (IP)

Which port number does the secure shell (SSH) protocol use?

port 22

Which connection-oriented protocol can be used to set up a secure session for remote logins?

Secure shell (SSH)

What is an example of an IPv4 class B address?

172.16.1.200

Which technique can be used by DNS to battle email spam?

Domain keys identified mail (DKIM)

What is a risk-preventing feature that deals with the likelihood that the feature will change?

Volatility

Which existing technologies can be used to prevent security breaches by segmenting network traffic over multiple tables simultaneously on a single router?

Virtual routing and forwarding (VRF)

Which protocols can be disabled to increase network infrastructure security?

File transfer protocol (FTP)

Which type of network attack is worsened by high-speed transfer and the ability to retrieve or upload large amounts of data in a faster way?

Swarm attack

Which feature of an integrated development environment (IDE) adds a pause to a program to stop the flow of execution where it is defined by the user?

Breakpoints

What is an advantage of using a text editor instead of an integrated development environment (IDE)?

Fewer distractions

Which non-functional requirement (NFR) type deals with restoring a system after a brief system failure?

Maintainability

Which type of non-functional requirement (NFR) stipulates that a program running on a Windows 10 operating system must be able to run on a Windows 11 operating system without any change in performance?

Portability

Which non-functional requirement (NFR) type states that a web dashboard must be accessible to U.S. users almost 100% of the time every month during business hours?

Availability

A client's computer will not boot, and there is a loud clicking noise coming from the computer.

What is the probable cause?

Magnetic hard drive failure

What is most important when identifying the appropriate server or server-side technology stack?

Type of application being built

After installing a new video editing application, a person notices the application is running slowly. The person restarts the computer and receives an insufficient memory error, despite having 100 GB of free space on the hard drive.

What is the problem?

Available random-access memory (RAM)

Which aspect of virtualization manages all physical memory?

Hypervisor

Which type of cloud service makes provisions for hardware infrastructure and operating system software to run client applications?

Platform as a service (PaaS)

What describes why type 1 hypervisors are more efficient than type 2 hypervisors?

A type 1 hypervisor accesses the physical hardware directly.

Which hard disk drive interface is recommended for professional use?

SCSI

Which feature is a benefit of external drives in a corporate setting?

They are plug-and-play.

What is the minimum RAM requirement when installing and configuring a 64-bit Windows 11 system?

4 GB

What is the recommended RAM requirement when creating and editing high-definition media (FHD)?

16 GB

Which type of technology would be used to create a wide area network (WAN)?

Leased lines or dedicated lines and fiber-optic are a few specific links for WANs

What is required to run a hypervisor program on a computer system?

High-end CPU with dual channels and multiple cores

What is the correct network structure for local building connectivity?

LAN

Which connection type can a system analyst or administrator use for internet VPN technology when setting up a wide area network (WAN)?

Fiber optic

Which kind of cloud service classification describes VMware and Microsoft Azure?

Platform as a service (PaaS)

What represents the most common type of tech stack in web applications?

Full tech stack

Which programming language communicates with the back-end stack when considering front-end tech stacks?

JS

Which database is the best option for storing data in RAM when creating a back-end stack?

Redis

Which cloud computing characteristic allows a provider to allocate shared resources to multiple clients according to their usage demand?

Resource pooling

Which cloud service provides a user with an integrated solution of a cloud-based application and cloud-based virtual storage accessible via a web browser?

SaaS

Which cloud service meets the need for consolidating business services into a single site with centralized management with secure and isolated resources?

Private cloud services : constructed to offer security since its isolated from other cloud users of the same provider

Which kind of client-side virtualization is used to create an isolated environment to test an application while ensuring no negative impact on your live system?

Virtual sandbox

Which technology describes the software responsible for creating and running a virtual machine on a host system?

Hypervisor

A client on a budget wants to purchase a new hard drive with fast access times and needs at least 4 TB for storage.

Which type of hard drive would be ideal?

5400 RPM magnetic hard drive

A corporate client has several remote sites where it develops and manages several secure yet high-profile products. Its time-to-market strategies and business processes are key drivers to its success but change often.

Which service level best fits this situation?

XaaS:

offers any combination of cloud services (IaaS, PaaS, SaaS, HaaS, CaaS, and NaaS) and can be customized to meet all client requirements. anything/everything as a service serves client best

Which tool describes an aspect of a front-end technology stack?

React

Which type of RAM is commonly installed on motherboards and loses data rapidly, requiring a constant refresh?

DRAM

Which DIMM technology can be used in a quad-channel configuration?

DDR5

A client is looking for a cloud service model that allows them to use computing resources, to test applications, and to release the computing resources afterward.

Which model best fits this client's needs?

PaaS

As part of a cost-effective solution, a client is looking to slowly transition from its in-house data center, including the IT staff.

Which service is a feasible option?

Hybrid cloud

Which service or role is an example of a use case for containers?

Microservices:

Containers and, by extension, containerization are well suited for microservice architectures, as they can keep packaged all the smaller services used to construct microservices.