CompTIA Updated 220-1201 Exam Questions and Answers by evangeline

UDP (User Datagram Protocol) is the preferred protocol for real-time video streaming, such as feeds from network cameras. According to CompTIA Core 1 (220-1201) networking protocols objectives, UDP prioritizes speed and low latency over guaranteed delivery, making it ideal for time-sensitive applications.

Real-time video streaming can tolerate occasional packet loss, but it cannot tolerate delays caused by retransmissions. UDP does not perform error checking or packet retransmission, which reduces overhead and ensures smooth, continuous playback. This is critical for live video feeds where delayed packets are useless.

TCP, while reliable, introduces latency due to acknowledgments and retransmissions, making it unsuitable for real-time streaming. FTP is a file transfer protocol and does not support live streaming. RDP is used for remote desktop access and is not designed for transmitting continuous real-time video streams from cameras.

CompTIA emphasizes understanding protocol selection based on application requirements, particularly distinguishing between reliability and performance needs. For live video, UDP is the optimal choice.

A private cloud is the best choice when an organization requires ownership and control of all physical hardware. In CompTIA A+ terms, a private cloud is a cloud deployment model where the cloud infrastructure is dedicated to a single organization and can be implemented on-premises (or hosted for that organization only). If the requirement explicitly states the organization must own the servers, storage, and network equipment, that aligns with a private cloud built and maintained using the organization’s own datacenter resources. This provides greater control over security, compliance, customization, and data governance compared with shared models.

A public cloud is owned and operated by a third-party provider, so the organization does not own the underlying hardware. A hybrid cloud combines private and public components; since part of it relies on provider-owned infrastructure, it does not meet the requirement of owning all physical hardware. IaaS and PaaS are cloud service models (what is consumed), not deployment/delivery models (how it is deployed), and they commonly run on provider-owned hardware as well. Therefore, Private cloud is the correct answer.

CompTIA A+ identifies satellite internet as the connection type most susceptible to weather-related interference, particularly rain, snow, and heavy cloud cover. This phenomenon is known as rain fade. Satellite connections rely on high-frequency microwave signals transmitted between a dish antenna at the customer site and an orbiting satellite. Moisture in the atmosphere absorbs and scatters these signals, causing latency spikes, reduced bandwidth, or complete signal loss during storms.

Fiber (A) uses light signals through glass fiber and is immune to electromagnetic and weather interference. Cable internet (B) uses shielded coaxial lines buried or run overhead, but rain does not affect signal quality in normal conditions. DSL (D) uses telephone lines, which may degrade with physical line issues, but not directly due to rain in the same way satellite is affected.

Thus, satellite internet is most likely to experience signal degradation during rain conditions.

CompTIA A+ divides hypervisors into two main categories: Type 1 (bare-metal) and Type 2 (hosted). A Type 2 hypervisor runs on top of an existing host operating system such as Windows, macOS, or Linux. It relies on the host OS for device drivers, hardware interaction, and resource management. Examples include VMware Workstation, Oracle VirtualBox, and Parallels Desktop.

Type 2 hypervisors are ideal for lab environments, testing, learning, and small-scale virtualization because they do not require dedicated hardware or direct hardware control. The host OS loads first, and the hypervisor runs as an application, allowing users to create and manage virtual machines from within the OS environment.

Option B describes a Type 1 hypervisor, which installs directly on hardware without a host OS. Option A is unrelated, as firewalls are separate from virtualization technology. Option D is incorrect because hypervisors do not inherently increase CPU capabilities; they merely allocate existing hardware resources to virtual machines.

Thus, the correct and CompTIA-aligned description of a Type 2 hypervisor is that it runs on a host operating system.