MCQs

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Overall MCQs for Reference

What is the full form of USB?
a. Universal Side Bus
b. Universal Serial Bus
c. Undivided Serial Bus
d. Universal Stand Bus
Answer: b. Universal Serial Bustestbook+1
Which organization maintains the USB standard?
a. USB Technical Group
b. ITU
c. USB Implementers Forum
d. IEEE
Answer: c. USB Implementers Forumtestbook+1
Which USB standard was first introduced in 1996?
a. USB 2.0
b. USB 1.x
c. USB 3.0
d. USB4
Answer: b. USB 1.xwikipedia+1
Which of these is a main function of USB in computers?
a. Serial data transmission
b. Analog signal processing
c. Wireless communication
d. Parallel data transmission
Answer: a. Serial data transmissionsavemyexams+1
USB connectors are primarily categorized by what characteristic?
a. Voltage
b. Color
c. Physical shape and design
d. Speed
Answer: c. Physical shape and designsavemyexams
Which USB connector type is most commonly used for flash drives and keyboards?
a. USB-B
b. USB-C
c. USB-A
d. Micro-USB
Answer: c. USB-Asavemyexams
What is the data transfer speed of USB 2.0?
a. 12 Mbps
b. 480 Mbps
c. 5 Gbps
d. 80 Gbps
Answer: b. 480 Mbpssanfoundry+1
Which USB version introduced a speed of up to 5 Gbps?
a. USB 1.1
b. USB 2.0
c. USB 3.0
d. USB4
Answer: c. USB 3.0wikipedia+1
USB4 supports data transfer speeds up to:
a. 5 Gbps
b. 20 Gbps
c. 40 Gbps
d. 80 Gbps
Answer: d. 80 Gbpswikipedia+1
Which cable type is the latest and supports higher speeds and power delivery?
a. USB-B
b. USB-C
c. USB-A
d. Mini-USB
Answer: b. USB-Csavemyexams
In server hardware, what is the main use of USB ports?
a. Connecting printers only
b. Serial communication with storage devices
c. Connecting peripheral devices and providing power
d. Transmitting video signals
Answer: c. Connecting peripheral devices and providing powerautomationcommunity+1
Which statement is true about USB communication in servers?
a. It is synchronous
b. It only supports parallel communication
c. It operates asynchronously
d. It does not support data transmission
Answer: c. It operates asynchronouslysavemyexams
What is the default address used by a new USB device upon connection?
a. FFH
b. 00H
c. 01H
d. F0H
Answer: b. 00Hengineersgarage
How are USB devices assigned unique addresses?
a. Host assigns addresses based on device manufacturer
b. Devices generate their own addresses
c. Host assigns addresses sequentially
d. Hub assigns random addresses
Answer: c. Host assigns addresses sequentiallyengineersgarage
The process of the host acquiring information about a USB device is called:
a. Arbitration
b. Describing
c. Enumeration
d. Polling
Answer: c. Enumerationengineersgarage
Information about a USB device is stored in:
a. RAM
b. ROM (descriptors)
c. Hard Drive
d. CPU cache
Answer: b. ROM (descriptors)engineersgarage
Which structure does USB use for connecting devices?
a. List
b. Tree
c. Star
d. Mesh
Answer: b. Treesanfoundry
The I/O devices connected by USB are considered the:
a. Branches
b. Roots
c. Leaves
d. Subordinate nodes
Answer: c. Leavessanfoundry
What is the mode of transmission for USB?
a. Serial
b. Parallel
c. Hybrid
d. Wireless
Answer: a. Serialsanfoundry+1
Who controls the communication between host and device in USB?
a. Device itself
b. Hub
c. Host (server or computer)
d. Peripheral manufacturer
Answer: c. Host (server or computer)sanfoundry+1
Can devices communicate with each other over USB?
a. Yes, always
b. Only on certain ports
c. No, only the host communicates with devices
d. Only USB 3.1 supports this
Answer: c. No, only the host communicates with devicessanfoundry
When the USB is connected, its root hub connects to:
a. SCSI Bus
b. IDE Bus
c. PCI Bus
d. Processor Bus
Answer: d. Processor Bussanfoundry
Which USB standard introduced high-speed mode of operation?
a. USB 1.1
b. USB 2.0
c. USB 3.0
d. USB-C
Answer: b. USB 2.0sanfoundry
What is a device endpoint in USB?
a. A connector pin
b. A portion that serves as data source or sink
c. The hub itself
d. Power pin
Answer: b. A portion that serves as data source or sinkengineersgarage
What is a USB hub?
a. A device to convert USB to HDMI
b. A central device that allows multiple USB connections
c. A power source for USB
d. Software function for USB addressing
Answer: b. A central device that allows multiple USB connectionsionos+1
The main USB port found on a server motherboard is commonly:
a. USB-A
b. USB-B
c. USB-C
d. Micro-USB
Answer: a. USB-Asavemyexams
What happens when a new USB device is connected to a server?
a. Server ignores the device
b. Server installs driver automatically if possible
c. Server shuts down
d. Server validates user credentials
Answer: b. Server installs driver automatically if possiblesavemyexams
The USB 3.0 specification is also called:
a. SuperSpeed USB
b. Ultra USB
c. Fast USB
d. MegaSpeed USB
Answer: a. SuperSpeed USBwikipedia
Which encoding technique is used in USB 3.0 to achieve high throughput?
a. 6b/8b encoding
b. 8b/10b encoding
c. Manchester encoding
d. Differential encoding
Answer: b. 8b/10b encodingwikipedia
USB Power Delivery (USB-PD) can deliver up to how many watts in the latest specification?
a. 60 watts
b. 100 watts
c. 240 watts
d. 320 watts
Answer: c. 240 wattswikipedia
USB communication can support which protocol tunneling as of USB4?
a. SCSI tunneling
b. Thunderbolt 3 (PCIe and DisplayPort)
c. Ethernet only
d. SAS tunneling
Answer: b. Thunderbolt 3 (PCIe and DisplayPort)wikipedia
What color is traditionally associated with USB 3.0 connectors?
a. Black
b. White
c. Blue
d. Green
Answer: c. Bluewikipedia
USB supports which type of plug-and-play?
a. Hardware only
b. Expandable plug-and-play
c. Fixed plug-and-play
d. Passive plug-and-play
Answer: b. Expandable plug-and-playlearn.microsoft
Which USB connector is reversible and supports both power and data transfer at high speeds?
a. USB-A
b. USB-B
c. Mini-USB
d. USB-C
Answer: d. USB-Cionos+1
What does the host do if a USB device is not recognized automatically?
a. Ignores the device
b. Prompts for driver installation manually
c. Deletes the device entry
d. Formats the device
Answer: b. Prompts for driver installation manuallysavemyexams
USB hubs operate on which topology?
a. Mesh
b. Tree
c. Ring
d. Star
Answer: b. Treesanfoundry
What type of communication is used for speaker output in USB audio devices?
a. Synchronous
b. Isochronous
c. Asynchronous
d. Simplex
Answer: b. Isochronoussanfoundry
Which class of USB device is used for mass storage applications?
a. HID class
b. CDC class
c. MSC class
d. Printer class
Answer: c. MSC classwikipedia
USB provides:
a. Data transfer only
b. Power delivery only
c. Both data transfer and power delivery
d. Wireless communication only
Answer: c. Both data transfer and power deliveryautomationcommunity+1
Which step is crucial for a server before communicating with a newly attached USB device?
a. Formatting the device
b. Assigning a unique address
c. Running antivirus
d. Restarting system
Answer: b. Assigning a unique addressengineersgarage
In USB, what does the descriptor structure provide?
a. The operating voltage
b. Device capabilities and identity
c. Root hub location
d. Firewall settings
Answer: b. Device capabilities and identityengineersgarage
USB devices are connected and disconnected while the server is in operation, this is called:
a. Hot swapping
b. Cold swapping
c. Warm swapping
d. Live plugging
Answer: a. Hot swappingsavemyexams+1
Which USB version primarily uses half-duplex transmission?
a. USB 3.0
b. USB 2.0
c. USB4
d. USB-C
Answer: b. USB 2.0wikipedia
What does ‘Plug and Play’ mean in USB context?
a. Required manual settings
b. Automatic detection/configuration of devices
c. Plug just for power
d. Only one-time use
Answer: b. Automatic detection/configuration of deviceslearn.microsoft+1
For server recovery, USB is often used as:
a. A power source
b. A bootable media for installation
c. A monitor connection
d. A network card
Answer: b. A bootable media for installationionos
The primary advantage of USB over older serial ports in servers is:
a. Slower speed but reduced cost
b. Faster speeds and wider compatibility
c. Only charging function
d. Fixed address allocation
Answer: b. Faster speeds and wider compatibilitysavemyexams+1
What does “USB Host” refer to in server systems?
a. The peripheral device
b. The central computer controlling communication
c. A network switch
d. The operating system kernel only
Answer: b. The central computer controlling communicationwikipedia
Which device would NOT typically connect to a server via USB?
a. Keyboard
b. Mouse
c. Rack Power Distribution Unit (PDU)
d. Printer
Answer: c. Rack Power Distribution Unit (PDU)ionos+1
The USB standards are backward compatible, which means:
a. Older USB devices can work with newer ports
b. Only the latest devices work
c. Past USB devices become obsolete
d. Devices need upgrades
Answer: a. Older USB devices can work with newer portssavemyexams+1
What is a major security concern when using USB ports in servers?
a. Overclocking the CPU
b. Unauthorized data access or malware via removable drives
c. Excess power usage
d. Reduced display quality
Answer: b. Unauthorized data access or malware via removable drivesionos+1

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