Pass 220-1201 Exam Guide

ECC (Error-Correcting Code) RAM is commonly used in servers to provide error detection and correction, improving reliability in critical systems. It is designed to detect and correct single-bit errors, ensuring data integrity in environments where stability is paramount.

Option A (SODIMM): Incorrect. SODIMM is typically used in laptops, not servers.

Option B (Rambus): Incorrect. Rambus is an outdated RAM type and not commonly used today.

Option C (DDR3): Incorrect. While DDR3 is a type of RAM, it is not specific to servers and does not provide error correction.

Elasticity in cloud computing refers to the ability of a system to automatically allocate and release resources (such as CPU, RAM, or virtual machines) as workload demands change. This feature is key to ensuring that resources are used efficiently without manual intervention.

A VLAN (Virtual Local Area Network) is a network technology used to logically segment a physical network into multiple distinct broadcast domains, even if they share the same hardware.

From the CompTIA A+ 220-1101 Official Study Guide, Objective 2.2 – Compare and contrast common networking hardware:

“VLANs allow network administrators to segment a network logically, isolating broadcast traffic and improving security and management, regardless of the physical network layout.”

Other options explained:

MAC (Media Access Control) is a hardware address, not a segmentation method.

NIC (Network Interface Card) is network hardware, not for logical segmentation.

DSL (Digital Subscriber Line) is an internet connection type.

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Networking Concepts

CompTIA Exam Objectives 220-1101, Domain 2.2

A hybrid cloud combines private infrastructure (on-premises, self-operated data centers) with public cloud services, providing flexibility and scalability.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.7 – Cloud concepts:

“A hybrid cloud model integrates private and public cloud infrastructure to allow applications and data to be shared between them.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Cloud Computing

CompTIA Exam Objectives 220-1101, Domain 3.7

============