C Multiple Choice Questions Pt.2

Which of the following best describes elasticity in cloud computing?

❍ A. A cloud-based application framework is used to build more complex apps ❍ B. The cloud operates in an internal virtualized data center ❍ C. All cloud storage is managed from a central pool ❍ D. Cloud resources can scale up as needed The Answer: D. Cloud resources can scale up as needed Rapid elasticity is a cloud computing characteristic that allows the scaling up and down of cloud-based applications on an as-needed basis.

Which of these network types would MOST likely be categorized as a WAN?

❍ A. A point-to-point connection to an office in another country ❍ B. A fiber connection to a building across a campus ❍ C. A connection to a remote office on the other side of town ❍ D. A link between a mobile device and an automobile The Answer: A. A point-to-point connection to an office in another country WAN (Wide Area Network) connections are between locations in different cities, states, or countries.

A company would like to configure a Sender Policy Framework (SPF) record in their DNS. Which of the following should be configured in the DNS server?

❍ A. AAAA ❍ B. TXT ❍ C. MX ❍ D. DKIM The Answer: B. TXT The TXT, or text record, can be used in a DNS server to specify the SPF information. The SPF record documents the list of email servers authorized to send emails for the domain.

A systems administrator has just installed a new server in a data center. When pressing the power button, there's no response from the server, no lights appear on the front display, and no fans are spinning. Which of the following would be the MOST likely reason for this issue?

❍ A. An operating system is not installed on the server ❍ B. The power supply switch is set to the wrong input voltage ❍ C. The BIOS needs to be upgraded ❍ D. The keyboard and mouse are not connected The Answer: B. The power supply switch is set to the wrong input voltage If the data center power provides 120 volts and the computer's power supply is set to 240 volts, the computer will not be able to start. Some power supplies will attempt to start with the lower voltage while other power supplies will not work at all. In either case, the computer is not going to perform properly with the lower voltage and may be damaged by the difference in expected voltage.

A network administrator is installing a network link containing an LC connector. Which of the following would be the MOST likely connection for this link?

❍ A. Cable modem ❍ B. Access point ❍ C. Internet firewall ❍ D. Link between buildings The Answer: D. Link between buildings Connections between buildings tend to exceed the distance allowed for copper cabling, so fiber optics are often used to communicate over this extended distance. The LC (Lucent Connector) interface is a common fiber optic connector.

An administrator is building a computer system to stream live corporate events. Which of the following should be installed to provide input for the live stream?

❍ A. Capture card ❍ B. Thermal pads ❍ C. HSM ❍ D. M.2 The Answer: A. Capture card A capture card can be used as an input for video and audio. This input can be stored on a drive or used as input to a streaming service.

What type of network connection is commonly used by DSL?

❍ A. Coax ❍ B. Fiber optic ❍ C. 802.11 ❍ D. Twisted pair copper The Answer: D. Twisted pair copper DSL (Digital Subscriber Line) networks use the same twisted pair copper as traditional phone lines.

A system administrator is configuring the IP address settings on a remote server. Which of these settings would enable the server to communicate with other devices using a fully qualified domain name?

❍ A. DHCP ❍ B. IP address ❍ C. DNS ❍ D. Subnet mask The Answer: C. DNS A DNS (Domain Name System) server provides the conversion between fully qualified domain names and IP (Internet Protocol) addresses. With a DNS, we can refer to servers by their name instead of using IP addresses.

Which of the following services would automatically provide an IP address to any device connected to the network?

❍ A. DNS ❍ B. Proxy ❍ C. IPS ❍ D. DHCP The Answer: D. DHCP DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP addresses to network devices. A device configured to use DHCP will be assigned an IP address without any intervention from the user or network administrator.

Which of the following would be MOST commonly associated with the management interface on a switch?

❍ A. ST ❍ B. 802.11 ❍ C. DB-9 ❍ D. Thunderbolt The Answer: C. DB-9 The serial connectivity used with a DB-9 (D-subminiature size B, 9 pin) interface is usually associated with management ports on switches, router, and other infrastructure devices.

A workstation is configured with a video card that outputs DVI-D, but it needs to connect to an LCD projector with an HDMI connection. Which of the following would be the BEST way to connect this workstation to the projector?

❍ A. DVI-D to HDMI adapter ❍ B. Digital to analog converter ❍ C. VGA to HDMI adapter ❍ D. USB to HDMI converter The Answer: A. DVI-D to HDMI adapter DVI-D (Digital Visual Interface-Digital) and HDMI (High-Definition Multimedia Interface) are electrically compatible and only require an interface adapter to connect between devices. No conversion of the video signal is required between DVI-D and HDMI.

A user would like to ensure all apps on their smartphone use 802.11 networking instead of the cellular network. Which of the following would provide this functionality?

❍ A. Enable data caps ❍ B. Use biometric authentication ❍ C. Synchronize to iCloud ❍ D. VPN client The Answer: A. Enable data caps Most smartphones include the ability to set limits on how much data is transferred over certain network types. For example, iOS can be configured to allow or disallow downloads over a cellular network and can limit the size of downloads if a cellular network is enabled.

A user in the accounting department is reporting that all of the printed pages from a networked laser printer are completely blank. Nothing appears to be written on any of the printed pages. Which of the following would be the MOST likely cause of this issue?

❍ A. Fuser is faulty ❍ B. Print drivers are incorrect ❍ C. Printer out of memory ❍ D. Toner cartridge is faulty The Answer: D. Toner cartridge is faulty If the toner cartridge is completely empty or is not properly providing toner to the printer, then nothing will be printed on the final output.

A user in the accounting department had a new laptop delivered and installed, but they are reporting that the network throughput seems much slower than the previous computer. Which of the following would be the most likely cause of these slow transfer speeds?

❍ A. Incorrect SSID ❍ B. Device is assigned an APIPA address ❍ C. Incorrect gateway configuration ❍ D. Duplex mismatch ❍ E. Device is assigned an RFC 1918 address The Answer: D. Duplex mismatch A mismatch of half-duplex and full-duplex will not cause a total disruption of network communication, but it will cause the network to perform slowly.

An Android user needs to transfer some presentations from their desktop computer to their smartphone. Which of the following would be the BEST choice?

❍ A. Lightning ❍ B. RJ45 ❍ C. USB-C ❍ D. Thunderbolt The Answer: C. USB-C USB-C is a connection type used on many Android-based devices.

What type of proprietary Apple connector can be plugged in face up or face down?

❍ A. Lightning ❍ B. Thunderbolt ❍ C. SATA ❍ D. USB-C The Answer: A. Lightning The Apple lightning connector is only found on Apple devices, and it allows for a higher power output to charge larger phone and tablets. The connector can also be plugged in either face up or face down.

A system administrator needs to test a new application simultaneously across macOS, Windows, and Linux. Which of the following would be the BEST choice for this requirement?

❍ A. Multiple partitions ❍ B. SaaS ❍ C. Cross-platform virtualization ❍ D. High availability The Answer: C. Cross-platform virtualization Cross-platform virtualization allows the user to run multiple operating systems simultaneously.

A user in the facilities department is having an issue printing their blueprints to a network laser printer. When they pick up their output, the page contains specks and small dots randomly printed on the page with the final output. Which of these is the MOST likely cause of this issue?

❍ A. Network is faulty ❍ B. Optical drum is not clean ❍ C. The fuser is not operating ❍ D. Printer is low on toner The Answer: B. Optical drum is not clean The cleaning process of a laser printer removes any non-used toner from the optical drum after one cycle of the printing process. If the cleaning process isn't working properly, extra toner will remain on the drum and can be transferred to the next section of the page output as dots or specs on the page.

Which of the following devices makes forwarding decisions based on destination IP address?

❍ A. ONT ❍ B. Router ❍ C. Hub ❍ D. Managed switch The Answer: B. Router A router decides the next hop of an packet based on the packet's destination IP (Internet Protocol) address.

A high speed network provides access to a large array of hard drives. Which of the following would best describe this type of network?

❍ A. PAN ❍ B. LAN ❍ C. SAN ❍ D. MAN The Answer: C. SAN A SAN (Storage Area Network) is a high-speed network connecting users with large data stores. The SAN looks and feels like a local storage device, and provides block-level access for efficient reading and writing.

A network administrator is installing an Ethernet cable containing gel and a ground wire. Which of the following would MOST likely describe this cable?

❍ A. Plenum ❍ B. Direct burial ❍ C. Optical ❍ D. Ethernet patch The Answer: B. Direct burial A direct burial cable is designed to be installed in the ground, so it includes waterproof gel to protect the copper cables. The cables also include a ground wire to support an electrical ground.

A technician is connecting two buildings using a fiber optic link. Which of these connectors would be commonly associated with this media type?

❍ A. RJ45 ❍ B. F ❍ C. Molex ❍ D. SC The Answer: D. SC An SC (Subscriber Connector or "Square Connector") interface is a common type of connection for fiber optic terminations.

A web server administrator has received a notification that disk 1 in a RAID 5 array has failed. Which of the following would be the BEST next step to resolve this drive failure?

❍ A. Replace disk 1 and restore from backup ❍ B. Replace all drives and restore from backup ❍ C. Replace all drives and rebuild the array ❍ D. Replace disk 1 and rebuild the array The Answer: D. Replace disk 1 and rebuild the array A RAID 5 (Redundant Array of Independent Disks, level 5) array is designed to maintain data availability in the event of a single drive failure. In this example, it's unlikely that the users even realized one of the drives on the array was suddenly unavailable because the array would continue to operate normally with all data intact. To resolve this issue, the bad drive would need to be replaced, and the array would rebuild the data on the new drive using the redundant data from other drives.

A system administrator has just built a new server with an eight core CPU. When viewing information in Windows Task Manager, the utility shows CPU performance for sixteen different processors. Which of the following would be the MOST likely reason for this output?

❍ A. Task Manager displays CPU input and output separately ❍ B. The CPU supports multithreading ❍ C. The BIOS requires an upgrade to support the newer CPU ❍ D. The CPU is faulty The Answer: B. The CPU supports multithreading Multithreading provides additional processing efficiency by treating a single CPU (Central Processing Unit) as multiple processors. Although this does not double the performance, it can increase processing efficiency by fifteen to thirty percent.

A user has reported they can't browse to Google's search page at https://www.google.com. The workstation IP address is 192.168.1.5, the subnet mask is 255.255.255.0, the default gateway is 192.168.1.1, and the domain name servers are 10.2.2.1 and 10.2.2.2. A technician can successfully ping the local IP address, the default gateway, and Google's DNS server at 8.8.8.8. Which of the following is the most likely cause of this issue?

❍ A. The Ethernet adapter's duplex setting is incorrect ❍ B. The default gateway is faulty ❍ C. The Internet connection is down ❍ D. The DNS servers are faulty ❍ E. The client's default gateway configuration is incorrect The Answer: D. The DNS servers are faulty The DNS (Domain Name System) servers are responsible for converting a fully-qualified domain name (www.google.com) to an IP address. If the DNS servers are not working, then an IP address for a device cannot be resolved and the communications process can't continue.

A Windows computer is configured to obtain an IP address automatically. Which of the following would occur if the automatic assignment process was not working?

❍ A. The IP address would be set to 0.0.0.0 ❍ B. A link-local address would be assigned ❍ C. The Ethernet adapter would be disabled ❍ D. The last known good IP address would be used The Answer: B. A link-local address would be assigned If a device is configured to obtain an IP address from a DHCP (Dynamic Host Configuration Protocol) server and the DHCP server is not available, an APIPA (Automatic Private IP Addressing) address, or linklocal address, would be assigned

A computer lab is purchasing supplies for their 3D printers. Which of the following should be included on this order?

❍ A. Toner cartridge ❍ B. Ink ribbon ❍ C. Plastic filament ❍ D. Ink cartridge The Answer: C. Plastic filament 3D printers can melt plastic filament in layers to create a 3D object. Other 3D printer types can use a light source to harden resin.

An operating system is transferring unused application data from memory to the local storage drive of the computer. Which of the following would BEST describe this memory technology?

❍ A. Virtual ❍ B. ECC ❍ C. DDR ❍ D. Parity The Answer: A. Virtual Most operating systems can create free RAM (Random Access Memory) space by temporarily swapping unused application data to the local storage drive. This technology is often called virtual memory, virtual RAM, or a swap file.