A+ 1101 Final Cram
The office inkjet printer is missing lines when it is printing. What is the correct maintenance step that needs to be performed in the printer?
A blocked or dirty print head nozzle will show on the printed material as a missing line. This can typically be corrected by running a print head cleaning cycle.
A support technician is connecting an extended integrated drive electronics (IDE) cable to a PC's motherboard and knows that pin 1 on the cable must match up with pin 1 on the port. How can the tech know where pin 1 is on the cable?
On the cable, pin 1 has a red stripe. Manufacturers also key the connectors to prevent technicians from inserting them the wrong way around.
An application uses Transmission Control Protocol (TCP) as it requires data to make it to the destination 100% intact. Which of the following are functions of this protocol? (Select all that apply.) Uses SYN/ACK packets. Uses TFTP. Uses negative acknowledgment. Uses FIN.
TCP establishes a connection between the sender and recipient using a handshake sequence of SYN, SYN/ACK, and ACK packets. TCP allows the receiver to send a negative acknowledgment (NACK) to force retransmission of a missing or damaged packet. TCP allows the graceful termination of a session using a FIN handshake. The main drawback is that this connection information requires multiple header fields.
A network technician is configuring an email connection that will have a permanent connection to the mail server. What kind of email connection is the technician configuring?
The Internet Message Access Protocol (IMAP) is a mail retrieval protocol that supports permanent connections to a server and connecting multiple clients to the same mailbox simultaneously.
A security technician is installing a doorbell/video entry system for a customer so that the customer can see and communicate with people who come to their home when they aren't there. What kind of device is the doorbell/video entry system?
The doorbell/video entry system is a smart device which is a device or appliance that users can configure and monitor over an IoT network.
A network technician is setting static IPv4 addresses on servers. What needs to be manually set on each of the servers so that they connect to the network and aren't conflict with other servers?
The gateway parameter is the IPv4 address of a router and is the IP address to which packets destined for a remote network should go by default. This will be changed for groups of locally connected devices. The last octet will configure differently quite frequently. There are 255 ips available in the last octet and it is likely that the first and last are used by networking devices.
A network technician is trying to locate the Cat 6A cable in a closet full of unmarked boxes with different types of cabling in them. How will the technician be able to tell which cable is Cat 6A?
The technician can locate the cable by looking at the cable jacket since manufacturers print the Cat specification on the cable jacket. The technician will locate the cable by looking at the cable jacket because manufacturers print the cable type, such as UTP unshielded twisted pair (UTP) or foiled/unshielded twisted pair (F/UTP), on the cable jacket.
A technician is implementing a feature that will compare hashes of key system state data during the boot process to ensure that nobody has tampered with the system firmware, boot loader, and OS kernel. What feature is this?
The technician is implementing the trusted platform module (TPM) which, during the boot process, compares hashes of key system state data to ensure they have not been tampered with.
A hardware technician is upgrading a device with multiple, identical central processing unit (CPU) packages. What class of computer is the technician most likely upgrading?
The technician is upgrading a server-class computer. Server motherboards are often multi-socket, meaning that the technician can install multiple, identical CPU packages.
A hardware technician is tearing apart a non-functioning computer to salvage parts and pulls out a memory stick that synchronizes its speed to the motherboard system clock. What type of memory has the technician removed?
The technician removed synchronous DRAM (SDRAM) which is known as that because its speed synchronizes with the motherboard system clock.
A technician must determine why a computer is overheating. Which of the following may be the cause?
A computer can overheat because a fan is not working. Proper cooling is vital to the lifespan and performance of the processor. A computer can overheat because the room is too warm. The technician should check whether the PC is near a hot radiator or in direct sunlight.
Company employees access the same resources on the internet many times a day. As such, a network administrator configures a solution that forwards traffic to and from the internet and also caches content to improve performance and reduce bandwidth consumption. What solution is the administrator implementing?
A proxy server takes a whole HTTP request from a client, checks it, then forwards it to and from the destination server on the internet. It also caches content to improve performance.
system-on-chip (SoC) where all the controllers, including video, sound, networking, and storage, are part of the CPU
Advanced RISC Machine (ARM) designs implement an SoC which means that all the controllers, including video, sound, networking, and storage, are part of the CPU.
A mobile device is pinpointing its location by determining where it is in relation to cell phone towers and wireless access points. What kind of system is the device using to pinpoint location?
An indoor positioning system (IPS) works out a device's location by triangulating its proximity to other radio sources, such as cellular radio towers, Wi-Fi access points, and Bluetooth/RFID beacons.
Which of the following statements regarding most connectors and ports is NOT true? They use edge contacts. They use internal connection points. They use keying. They can be reversible.
An input/output (I/O) port is the external connection point for a particular type of bus interface and the connector is the part of a peripheral cable that inserts into a port with the same shape.
A network technician troubleshoots a computer on the wired network that is experiencing slow network speeds. Which of the following would NOT be a possible cause for the technician to troubleshoot?
Another radio source broadcasting at the same frequency would cause interference and result in slow speeds for wireless devices, but this would not be relevant to a wired network.
A developer wants to ensure that no matter what server an administrator deploys their application on, it has all the libraries and dependencies needed for the application to operate properly. How can the developer accomplish this?
Container virtualization enforces resource separation at the OS level and includes the variables and libraries required by the application process in the container.
A network technician troubleshoots a computer that is getting a limited connectivity message and an address in the automatic IP addressing (APIPA) 169.254.x.y range instead of receiving a lease for an IP configuration from the DHCP server. What are some steps the technician should take to troubleshoot this issue?
Establish the scope of the issue. Check the configuration of patch cords. Check the VLAN configuration.
A web designer plans out a new website, including the uniform resource locators (URLs) for each page. What are parts of the URL that the web designer will need to consider?
FQDN Fully Qualified Domain Name Protocol File path
A hardware technician is scanning a computer's non-volatile storage devices for errors and infections. Which of the following will the technician include in the scanning? (Select all that apply.) Hard disk drives Solid-state drives Random access memory Mass storage devices
HDD SSD Mass-storage
A technician is troubleshooting a failed redundant array of independent disks (RAID) configuration and is unable to access the RAID configuration utility. What does this indicate?
If the technician cannot access the RAID configuration utility, this indicates that the controller itself is likely to have failed. However, the data on the volume should be recoverable.
A network technician installs virtual machines in hypervisor software that runs on a host operating system (OS). What kind of hypervisor setup is this?
In Type 2 hypervisors, the hypervisor application installs onto a host OS, and the computer must have resources to run the host OS, the hypervisor, and the guest operating systems. In a guest OS (or host-based) system, the hypervisor application is itself installed onto a host OS. The hypervisor software must support the host OS.
A manager directs a support technician to plug a device into the communications (COM) port. What port is the manager referring to?
In Windows, the serial port, or Recommended Standard #232 (RS-232) port, is also known as a communications (COM) port.
A user returned a new tablet to the helpdesk with complaints that the screen was too dark and that the desktop image they put on it burned into the display. What kind of display does the tablet have?
In an organic light-emitting diode (OLED) display, or technically an advanced matrix OLED (AMOLED), the panel does not require a separate backlight but the screen is darker and images burn into the screen easier.
A cloud service provider is taking advantage of software-defined networking (SDN) to allow customers to provision and deprovision cloud resources on-demand. Which layer of SDN does the SDN controller operate on?
In software defined networking, the SDN controller operates on the control layer between the application layer and the infrastructure layer.
A support technician opened a PC case and observed a small computer system interface (SCSI) connector plugged into the motherboard. What can the technician know to be true about the connector?
In the past, SCSI could support both internal devices and external peripherals, such as scanners and printers, but now it's used for the connection of internal hard disk drives.
A network technician is purchasing new displays for the graphics design team. Which type of thin-film transistor (TFT) will be optimal for supporting that type of work?
In-plane switching (IPS) uses crystals that rotate rather than twist. The main benefit is to deliver better color reproduction at a wider range of viewing angles making it the best TFT option for graphics design work.
A network technician configures a foundational cloud setup that will allow the developers to start all application development using a standardized server and database setup. What type of cloud service model is the technician configuring
Platform as a service (PaaS) would deploy servers and storage network infrastructure (as per IaaS) but also provide a multi-tier web application/database platform on top.
A user notices that a smartphone is not functioning properly. Switching between applications takes an excessive amount of time. What symptoms should a technician look for?
Poorly coded apps and malware can cause high resource usage which potentially leads to overheating problems for a device.
A desktop technician has responded to a user whose computer is running slow. The user claims they did not do anything that would cause the computer to run slow. What should the technician do to try to determine the probable cause of the problem? (Select all that apply.)
The technician should conduct research to identify or clarify symptoms and possible causes. One of the most useful troubleshooting skills is being able to perform research to find information quickly. The technician should question the obvious as sometimes the simplest things cause seemingly intractable problems. Diagnosis requires both attention to detail and a willingness to be systematic.
A network technician used a tool that energizes each wire in a cable. When the technician sent energy to some of the wires, the LED on the tool did not light up. What tool was the technician using?
The technician was using a cable tester, which is a pair of devices that attach to each end of a cable and energize each wire in the cable to test if the wire is conducting a signal.
A support technician needs to install an optical disk drive in a tower. How will the technician connect the optical drive cables?
The technician will be able to hook up the optical media drive through the side panel. A tower case has a side cover that a technician can remove by sliding the panel from its housing.
A hardware technician is calculating the amount of virtual memory in a system. Which of the following will the technician include in the calculation?
The technician will include system random access memory (RAM) in the calculation. The total amount of virtual memory is system RAM plus swap space. The technician will include swap space in the calculation. The total amount of virtual memory is system RAM plus swap space.
A support technician is installing a new SATA hard drive on a new computer. What is the best type of cable connector the technician will plug in to supply power to the drive?
The technician will plug in a 15-pin SATA power connector to connect the hard drive to the PC's power supply.
A user started a brand-new computer and received a "boot device not found" error. When the technician inspects it, what will they suspect the problem is?
The technician will suspect the problem is with the GPT as this is a modern boot scheme where the boot information is not on a single sector but still identifies partitions and OS boot loaders.
When an employee prints to a newly installed printer, the printed pages only have a few characters on each page. What type of error is this?
When a printer prints multiple blank pages or pages with only a few characters on them, this is garbled printing. This commonly occurs because of a missing or incorrect print driver.
A user configures their corporate email on a new smartphone. What will the user enter in the incoming mail server field?
When configuring corporate email, the user will enter the fully qualified domain name (FQDN) or IP address of the Internet Mail Access Protocol (IMAP) or Post Office Protocol (POP3) server.