Infrastructure III

Samantha is installing a public Wi-Fi network for a café. She decided to use the 802.11b standard. What maximum speed can her customers expect from this network?

• 11 MBPS

• 433 MBPS

• 54 MBPS

• 600 MPS

Answer explanation

802.11b supports a maximum throughput of 11 Mbps, making it suitable for basic browsing and email, but slower for more data-intensive activities. 54 Mbps is associated with the 802.11g standard, not 802.11b. 433 Mbps is a typical speed associated with 802.11ac (per spatial stream), not 802.11b. 600 Mbps is associated with the 802.11n standard, not 802.11b.

Michael has an Apple MacBook and wants to connect it to an external display for a presentation. He is looking for the connector commonly used for this purpose. Which connector was developed by Apple is MOST commonly used for connecting Apple devices to external displays?

• Mini DisplayPort

• HDMI

• DVI

• VGA

Answer explanation

Mini DisplayPort, developed by Apple, is a connector commonly used by Apple devices for connecting to external displays. It is a smaller version of the DisplayPort connector and is commonly found on Apple laptops and desktops. DVI (Digital Visual Interface) is a connector commonly used for digital video signals. While some Apple devices may have DVI ports or support DVI connectivity, it is not the most common connector for connecting Apple devices to external displays and was not developed by Apple. VGA (Video Graphics Array) is a connector commonly used for analog video signals and is not typically used for connecting Apple devices to external displays. VGA also was not developed by Apple. HDMI (High-Definition Multimedia Interface) is a connector commonly used for digital audio and video signals. While some Apple devices may have HDMI ports or support HDMI connectivity, it is not the most common connector for connecting Apple devices to external displays. HDMI was not developed by Apple.

What is a common functionality shared between mobile phones, tablets, and laptops?

• they used to host databases and applications in a network.

• typewriting

• they are portable and internet-enabled services

• they are primarily designed for gaming.

Answer explanation

obile phones, tablets, and laptops are all portable and internet-enabled devices, allowing their users to access information and perform tasks on the go. Typewriting is not a common functionality shared between mobile phones, tablets, and laptops. While all three devices provide options for text input, the term "typewriting" specifically refers to the act of using a typewriter, which is not applicable to modern mobile phones, tablets, or laptops. While these devices can indeed be used for gaming, it is gaming consoles that are primarily designed for this purpose. Servers, not with mobile phones, tablets, or laptops, are used to host databases and applications in a network.

John is using a router with an 802.11a standard. His brother tells him that the internet is very slow. What could be the maximum speed his brother is experiencing?

• 600 MBPS

• Above 1 GBPS

• 11 MBPS

• 54 MBPS

Answer explanation

802.11a offers a maximum speed of 54 Mbps, which is less than newer standards. 1 Gbps is the maximum speed provided by the more recent 802.11ac standard. This speed is not achievable with 802.11a. 11 Mbps is the speed of 802.11b standard which is slower than 802.11a. 600 Mbps is the maximum speed supported by the 802.11n standard, which is faster than 802.11a.

Chris has purchased a new network attached storage (NAS) device for his small business. To set it up and make it accessible to his team, what will Chris most likely need to do?

• Driver Installation

• web-based configuration

• plu-and play

• usb connection

Answer explanation

A NAS device operates over the network, meaning it will be assigned an IP address and will typically have a web-based interface for configuration. Chris will likely need to use the device's IP address to access its configuration portal from a web browser, where he can set up users, permissions, and other settings to make it accessible to his team. While some elements of a NAS setup may be plug-and-play, the user will still likely need to configure the NAS via a web interface for it to be usable by his team. While a USB connection might be used in some aspects of NAS setup or operation, the main setup process typically involves network connection and web-based configuration. NAS devices typically do not require driver installation on connected computers. Configuration is often done via a web interface.

Which component(s) of a computer system are responsible for storing data? (Select TWO).

• Hard Drive

• motherboard/system board

• RAM

• GPU

• CPU

Answer explanation

RAM stands for Random Access Memory. It is a type of volatile memory used to temporarily store data and instructions that the CPU needs to access quickly during computer operations. RAM is not intended for long-term data storage. The hard drive is a storage device that uses magnetic disks to store data persistently, even when the computer is powered off. It is commonly used for long-term data storage, such as the operating system, applications, and user files. The GPU (Graphics Processing Unit) is dedicated to processing and rendering graphics and is not involved in data storage. The CPU (Central Processing Unit) is the brain of the computer that performs calculations and executes instructions. While it interacts with data during processing, it is not primarily responsible for data storage. The motherboard (also known as the system board) is the main circuit board of a computer that provides a platform for all other components to connect and communicate with each other. While it facilitates data transfer between components, it is not directly responsible for data storage.

John lives in a small apartment block and decides to set up a home wireless network using the 802.11g standard. There are many other wireless networks from the neighbors' apartments. What could be a potential issue for his network?

• his network might reach beyond his apartment block

• his network speed could be very high

• his network could suffer from interference from other networks

• his network could automatically upgrade to 802. 11 in

Answer explanation

In a dense apartment setting, multiple networks operating on the same frequency (2.4GHz in the case of 802.11g) could lead to interference, potentially affecting network performance. While 802.11g is faster than 802.11b, in a dense environment with potential interference, the network speed is more likely to be decreased, not increased. While possible, this doesn't represent a direct issue related to signal interference or 802.11g speed limitations. Networks cannot automatically upgrade from 802.11g to 802.11n. It requires user intervention and compatible hardware.

What is the primary difference between a NAS and a file server?

• NAS support fewer files types compared fro file servers

• Nas cannot be accessed remotely, while files servers can

• Nas support only one users at a time , while files servers support multiple users

• NAs is a standalone device, while a file server requires a separate computer.

Answer explanation

A Network Attached Storage (NAS) device functions independently by connecting directly to the network, making it a standalone device. In contrast, a file server relies on a dedicated host computer to manage data storage and file sharing, requiring more resources compared to a NAS. The file type support does not depend on whether storage is a NAS or a file server, but rather on the software, protocols, and file systems they use. Both NAS and file servers usually support a broad spectrum of file types. NAS systems are designed to handle multiple simultaneous connections. They don't handle one user at a time. They support multi-user access to ensure collaborative work within a network. NAS, like file servers, can be accessed remotely as long as the user has appropriate permissions and the device is connected to the network. This remote access capability allows multiple users to retrieve files and manage data almost from anywhere.

Which network protocol facilitates encrypted communications over a computer network?

• SMTP

• LAN

• IMAP

• HTTPS

Answer explanation

HTTPS (Hyper Text Transfer Protocol Secure) enables encrypted communication and secure identification of the network's server, protecting data during transfer over the network. LAN (Local Area Network) represents a network type that covers a small geographic area. It doesn't refer to any network protocol utilized for encryption. SMTP (Simple Mail Transfer Protocol) is utilised to send and distribute outbound email messages, but it doesn't deal with encryption functionalities. IMAP (Internet Message Access Protocol) is a protocol for email retrieval and storage but doesn't inherently handle encrypted communication over the network.

Jenny lives in a dorm with many other students. All of them have set up their own wireless networks. Jenny is frustrated because her network is slow. She is using the 802.11b standard. What could be the main reason for her slow network speed?

• Her network security is set to WAP2

• she is using the 802.11b standard which has speed limitations.

• Her router is located in a central position in her room

• she has changed her default said

Answer explanation

The 802.11b standard has a maximum throughput of 11 Mbps, which is considerably lower than more recent standards. This relatively low speed can cause her network to be slow especially if she is attempting data-intensive activities. Changing the default SSID is a good security measure. It doesn't affect the network's speed. WPA2 is a security protocol. While it may slightly reduce speed due to its encryption overhead, it should not make a network noticeably slow unless the network is already operating at its maximum capacity. Having the router in a central position is usually good for maximizing signal coverage and minimizing signal loss. It shouldn't be a factor slowing down the network.