15.5.7 Practice Questions

You've just installed a new 16U wall-mounted rack in your data center. You need to install the following equipment in this rack: • A 4U redundant power supply • A 4U server • A 4U switch • A 2U router Which of the following equipment will also fit in this rack along with the above equipment? 2U UPS 4U UPS 4U firewall 3U server

2U UPS

Components within your server room are failing at a rapid pace. You discover that the humidity in the server room is at 60%, and the temperature is 80 degrees. What should you do to help reduce problems? Add a humidifier to the server room. Add line conditioners in the server room. Add a de-humidifier to the server room. Add a separate A/C unit in the server room.

Add a separate A/C unit in the server room.

You manage the website for your company. The website uses a cluster of two servers with a single shared storage device. The shared storage device uses a RAID 1 configuration. Each server has a single connection to the shared storage and a single connection to your ISP. You want to provide redundancy so that a failure in a single component does not cause the website to become unavailable. What should you add to your configuration to accomplish this? On each server, add a second network connection to the internet. Reconfigure the disk array in a RAID 1+0 configuration. On each server, add a second network connection to connect the server to the shared storage device. Connect one server to the internet through a different ISP.

Connect one server to the internet through a different ISP.

You have been hired by a startup company to install a new data center. The company is small, so they have elected to use an unused employee break room as the data center. You are concerned about the physical security of the servers that will be installed in the data center. What should you do? (Select two.) Install a humidifier within the data center. Install two-post 24U racks. Install two-post 48U racks. Install a biometric lock on the data center door. Install racks with locking doors.

Install a biometric lock on the data center door. Install racks with locking doors.

You have purchased a solar backup power device to provide temporary electrical power to critical systems in your data center should the power provided by the electrical utility company go out. The solar panel array captures sunlight, converts it into direct current (DC), and stores it in large batteries. The power supplies in the servers, switches, and routers in your data center require alternating current (AC) to operate. Which electrical device should you implement to convert the DC power stored in the batteries into AC power that can be used in the data center? Inverter Transformer Capacitor Transistor

Inverter

You are adding a new rack to your data center, which will house two new blade servers and a new switch. The new servers will be used for virtualization. The only space you have available in the data center is on the opposite side of the room from your existing rack, which already houses several servers, a switch, and a router. You plan to configure a trunk port on each switch and connect them with a straight-through UTP cable that will run across the floor of the data center. To protect equipment from power failures, you also plan to install a UPS in the rack along with redundant power supplies for the server. Will this configuration work? No. You should not use blade servers for virtualization. No. You should not run a cable across the floor of the data center. No. You must implement the UPS and power supplies to the rack externally. Yes. This configuration complies with data center best practices. No. You must use a cross-over cable to connect the two switches together

No. You should not run a cable across the floor of the data center.

Your 24U rack currently houses two 4U server systems. To prevent overheating, you've installed a rack-mounted environment monitoring device within the rack. Currently, the device shows that the temperature within the rack is 70 degrees Fahrenheit (21 degrees Celsius). What should you do? Install a humidifier to increase the humidity within the server room. Re-orient the cold aisle within the server room so that it is directed toward the air conditioner's return duct. Install an additional air conditioning unit for the server room. Nothing. The temperature within the rack is within acceptable limits.

Nothing. The temperature within the rack is within acceptable limits.

Consider the network diagram shown below. Click on the item in the diagram that does not follow a standardized labeling scheme.

PC2

You maintain the network for an industrial manufacturing company. You are concerned about the dust in the area getting into server components and affecting the availability of the network. Which of the following should you implement? Positive pressure system Backup generator Line conditioner UPS Negative pressure system

Positive pressure system

Beside protecting a computer from under-voltages, a typical UPS also performs which two actions? Prevents electric shock Protects from over-voltages Conditions the power signal Prevents ESD

Protects from over-voltages Conditions the power signal

Which of the following is the least effective power loss protection for computer systems? Backup power generator Uninterruptible power supply Secondary power source Surge protector

Surge protector

You have been struggling to keep the temperature in your server room under control. To address this issue, you have decided to reconfigure the room to create hot and cold aisles. Which of the following are true concerning this configuration? (Select two.) The front of your servers should face the cold aisle. The rear of your servers should face the hot aisle. The cold aisle should face the air conditioner's return duct. The front of your servers should face the hot aisle. The hot aisle should face the air conditioner's output ducts. The rear of your servers should face the cold aisle.

The front of your servers should face the cold aisle. The rear of your servers should face the hot aisle.

You are adding a new rack to your data center, which will house two new blade servers and a new switch. The new servers will be used for file storage and a database server. The only space you have available in the data center is on the opposite side of the room from your existing rack, which already houses several servers, a switch, and a router. You plan to configure a trunk port on each switch and connect them with a cross-over UTP plenum cable that will run through the suspended tile ceiling of the data center. To provide power for the new devices, you had an electrician install several new 20-amp wall outlets near the new rack. Each device in the rack will be plugged directly into one of these new wall outlets. What is wrong with this configuration? (Select two.) You should implement redundant power supplies for the network devices. You should implement a UPS between the wall outlet and the network devices. You should not connect networking equipment to a 20-amp wall circuit. You should not run a plenum cable through a suspended tile ceiling. You must use a straight-through cable to connect the two switches together.

You should implement redundant power supplies for the network devices. You should implement a UPS between the wall outlet and the network devices.