Practice test questions 2. Flashcards
What requires the use of a physical printer to print a document?
Print to Network. Printing to a network printer still requires access to a physical device connected to the network. The other options (Print to Image, Print to PDF, Print to XPS, and similarly Print to File) are all virtual printing methods. These methods will create a file of a specific type with the contents of the printed information. These methods allow a user the ability to print to a file, a PDF (Portable Document Format), XPS (XML Paper Specification - a Microsoft alternative to PDF), or an image (photo).
What ports should you block at the firewall if you want to prevent a remote login to a server from occurring?
- Secure shell (SSH) is the protocol used for remote administration and file copying using TCP port 22. SSH is considered secure since it uses authenticated and encrypted sessions for communication. The file transfer protocol (FTP) is the protocol used to transfer files across the internet over ports 20 and 21. The hypertext transfer protocol (HTTP) is a protocol used to provide web content to browsers using port 80.
You work as a computer technician for a production company that travels worldwide while filming and editing music videos. Due to the nature of video editing, you will be building a video production workstation for the company that will have the maximum amount of RAM, an 8-core CPU, a dedicated GPU, and a redundant array of solid-state devices for storage. You are now determining which power supply to install in the system. What is the MOST important characteristic to consider when choosing a power supply?
Input Voltage. This question provides you with many details, but the key phrase in finding the answer is in the first sentence. This computer will be traveling worldwide, and the most important consideration will be the input voltage. If you choose a 120-volt power supply, it would be destroyed if plugged into a 240-volt outlet (commonly used outside the United States). Conversely, if you use a 240-volt power supply and plug it into a 120-volt outlet, it will not function due to the lower voltage. Therefore, you need to pick a power supply with dual voltage selection capability for maximum compatibility worldwide.
What cloud computing resources are MOST important when determining a cloud file-storage synchronization application’s performance?
I/O bandwidth. I/O bandwidth is the measurement of the amount of input and output operations that can be performed within a given time. The higher the I/O bandwidth, the faster and more efficient a cloud file-storage synchronization application will become. Applications that rely on large amounts of reading and writing of data require a high amount of I/O bandwidth. Disk speed is not nearly as important since most cloud file-storage systems use a virtualized file system for storage and do not rely on a single disk. Instead, they rely on a storage area network or a virtualized storage solution. The CPU and RAM utilization on the system would not have as large of an impact on the performance as the I/O bandwidth.
You want to build a virtualization workstation that will be used to run four different server operating systems simultaneously to create a test lab environment. Each guest operating system only requires 20 GB of storage on the host workstation. What is the MOST important piece of hardware needed for this system to run efficiently?
Multi-core processor. For a virtualization workstation, it is important to have a fast processor with multiple cores. In addition to a multi-core processor, it is good to have lots of memory and a fast HDD (but not necessarily a large HDD). A dedicated GPU (graphical processing unit) is not important for a virtualization workstation. Many virtualized servers run in text-only mode or with a headless display, making a dedicated GPU a poor choice.
The large multi-function printer in your office is shared between 12 people. Unfortunately, it has stopped working, and the technicians have determined it must be replaced. A new printer has been ordered, but it will be 2 weeks until it arrives. The only other printer available in your office is the manager’s printer, but it is connected via USB to their workstation. One of the technicians would like to share the manager’s printer with the other 12 employees for the next 2 weeks as a temporary workaround. Unfortunately, there are no spare wired network jacks available in the office to connect the printer to the network directly, but there is a wireless access point nearby. Which of the following is the BEST way for the technician to allow the 12 employees to access the manager’s printer?
Purchase a portable wireless print server and connect the printer to it using USB. The BEST solution would be to use a wireless print server to connect the printer to it using USB. This wireless print server can then receive the print jobs directly from all of the network users. It is not recommended that the technician create a share on the manager’s computer or set the printer configuration to the manager’s IP address since all print jobs would fail anytime the manager shut down or restarted their computer. Using a USB drive to transfer the files to the manager’s computer each time someone wanted to print is also not a good solution since this is difficult for the users and will be disrupting the manager’s work every time someone needed to print something.
You have been asked to install a network cable inside a conduit placed underground and connected to two buildings located about 1 KM apart. What cable types should you choose?
Fiber. A fiber optic cable is a network cable that contains strands of glass fibers inside an insulated casing. They’re designed for long-distance, high-performance data networking, and telecommunications. If you are dealing with connecting two networks over a long distance (over a few hundred meters), you should use a fiber optic cable. Shielded and plenum copper cables can only cover a distance of approximately 100 meters in length. Coaxial cables can cover a maximum distance of 200 to 500 meters in length.
Samuel is building a backup file server, and he wants to ensure that he can minimize downtime. What considerations should be MOST important when choosing a storage controller card for this server?
Support for hot-swappable drives. The primary consideration for the storage controller card is that it supports hot-swappable drives. Being hot-swappable means that a bad HDD can be removed and replaced while the server runs, which prevents downtime. Data loss can be prevented by configuring a RAID 1, RAID 5, RAID 6, or RAID 10, and the RAID can automatically replicate the data to the new hard drive that is replaced during the hot swapping process without any downtime or data loss. While the other options may be good features to have, the most important feature is support for hot-swapping to minimize downtime.
A computer technician is replacing a failed power supply in a customer’s gaming workstation that contains multiple hard drives and a dedicated graphics card. What are the two most important things for the technician to consider when selecting a power supply replacement for this system? (Select TWO)
Wattage rating, and number and type of connectors. The technician must ensure that they select a new power supply with a high enough wattage rating and the right number/type of connectors. Since this is a gaming workstation with several hard drives and a dedicated graphics card, it is likely to require a large wattage rating and many connectors. Wattage defines the amount of power needed to power all the hardware in the system. The number of connectors defines the number of devices that can be powered from the power supply. The number of connectors defines the types of devices that can be powered from the power supply.
What type of wireless network utilizes the 2.4 GHz frequency band and reaches speeds of up to 54 MBPS?
802.11g. The 802.11g (Wireless G) standard utilizes a 2.4 GHz frequency to provide wireless networking at speeds up to 54 MBPS. The 802.11a (Wireless A) standard utilizes a 5 GHz frequency to provide wireless networking at speeds up to 54 MBPS. The 802.11b (Wireless B) standard utilizes a 2.4 GHz frequency to provide wireless networking at speeds up to 11 MBPS. The 802.11n (Wireless N) standard utilizes a 2.4 GHz frequency to provide wireless networking at speeds up to 108 MBPS or a 5.0 GHz frequency to provide wireless networking at speeds up to 600 MBPS.
What is the lowest layer (bottom layer) of a bare-metal virtualization environment?
Physical Hardware. The bottom layer is physical hardware in this environment. It is what sits beneath the hypervisor and controls access to guest operating systems. The bare-metal approach doesn’t have a host operating system. A hypervisor is a program used to run and manage one or more virtual machines on a computer. A host operating system is an operating system that is running the hypervisor. A host operating system is an operating system that is running the hypervisor.
Your company’s network has 33 computers that are directly connected to two switches using CAT 5e cables. The two switches are interconnected using a fiber cable with MTRJ connectors at the end of the cables. All 33 computers and the 2 switches are located within the same office building. What types of networks would best describe this network configuration?
LAN. Since all of the computers and switches are located in the same building, it is best described as a Local Area Network (LAN) configuration. A local area network (LAN) is a network where all the nodes or hosts participating in the network are directly connected with cables or short-range wireless media.
You are attempting to install a full-sized PCIE network interface card into a 1U server, but it is too tall to fit into the machine. What do you need to install first to install the full-sized PCIE network interface card into the server?
Riser Card. A riser card is a right-angle expansion card used to extend a slot for a card in a computer to make room to plug it in. They are most commonly used in low-profile, 1U and 2U rackmount chassis or embedded systems. Riser cards plug into their respective bus (they are available for PCI, PCI-X, AGP, AGP Pro, PCI Express, ISA, or other busses) and rotate the peripheral cards plugged into the riser card so that they are parallel with the motherboard. Riser cards are available in 1-slot passive risers up to 3-slot passive riser cards for 2U rackmounts. An AGP, SCSI, or PCIE x16 expansion card is a fixed size and shape that cannot be reduced to fit in a 1U server.
You are building a virtualization environment to host public-facing servers that must connect to the internet. This will require that you install several secured Linux distributions as VMs. The VMs need to have access to a virtualized network and communicate with the host operating system and the internet. What types of network connections should you configure for each VM?
External. If you select external, the VMs would have internet access. If you select internal, each VM can communicate between the host and the other VMs. The private network connection type will create a switch that is usable only by the VMs. The VMs cannot use the switch to communicate with the host. If you select localhost, each VM could only communicate with itself.
You connected your laptop to a new wireless network and received an IP address automatically. What servers allowed this to occur?
DHCP server. A dynamic host configuration protocol (DHCP) serve is a server configured with a range of addresses to lease. Hosts can be allocated an IP address dynamically or be assigned a reserved IP address based on the host’s MAC address. The server can also provide other configuration information, such as the location of DNS servers. A domain name system (DNS) server is a server that hosts the database of domain names and the IP addresses mapped to those names. Each DNS server is authoritative for certain domain names that their organization owns.
