B.2.2 Practice Test

Which of the following is a drawback to satellite internet?

• High latency

• Less security

• Limited availability

• Low latency

Answer explanation

-The main downside to a satellite connection is latency. Because data has to travel to space and back, it can take a few seconds longer to exchange data. While this may not seem like much, it makes a big difference for real-time applications, like online gaming and video conferencing.

• -Satellite internet is widely available; this is one of the main advantages to satellite internet.

-Satellite internet is not less secure than other options.

Flash memory is used in a variety of devices and comes in a variety of form factors. Choose the terms used to describe these devices. (Select two.)

• Floppy disks

• Memory cards

• Zip disks

• Optical disks

• Thumb drives

Answer explanation

Explanation

A term used to describe a Flash drive is a Thumb drive. This device connects to a computer using a USB connector.

-The term "memory card" describes the flash memory devices used in cameras and video recorders.

-Floppy drives are older, obsolete devices.

-Optical disks are used in CD, DVD, and Blu-Ray drives.

Zip disks are obsolete devices.-

A network administrator for a legal firm has installed a Wi-Fi access point in company headquarters and is now ready to configure the access point from a company laptop computer. What is the first step that the administrator needs to take to begin configuring the access point?

• Select the correct 802.11 standard.

• Enter the SSID of the access point.

• Establish a Bluetooth connection.

• Enter the IP address of the access point web configuration page.

Answer explanation

Explanation

Accessing the configuration of your access point is normally completed using a web configuration page which is normally accessed by using the IP address of the device.

-While configuring the SSID (Service Set Identification) is part of configuring the access point, it is not used to access the configuration pages.

-Bluetooth is a technology that allows wireless communication between devices without using a modem or router. However, in this case, the administrator is attempting to access the AP router to configure the wireless network.

-The 802.11 standard for the access point is already established by the manufacturer and is not part of configuring the access point.

What is the maximum working range of a Class 3 Bluetooth device?

• 1 meter

• 0.5 meters

• 100 meters

• 10 meters

Answer explanation

Explanation

Class 3 Bluetooth devices can work at a maximum range of 1 meter or 3 feet.

Class 2 Bluetooth devices can work at a maximum range of 10 meters or 33 feet.

Class 1 Bluetooth devices can work at a maximum range of 100 meters or 238 feet.

Class 4 Bluetooth devices can work at a maximum range of 0.5 meters or 1.5 feet.

Which of the following internet protocols makes sure that data packets are assembled on the receiving end in the correct order so that a complete data package is delivered?

• Domain Name System (DNS)

• Transmission Control Protocol (TCP)

• Internet Protocol (IP)

• HyperText Transfer Protocol (HTTP)

Answer explanation

Explanation

-Once they're received at the destination, data packets are reassembled in the correct order using TCP.

-Internet Protocol (IP) is a set of rules that makes sure data packets arrive at the correct destination. It does not focus on assembling the packets in the correct order to deliver a complete data package.

-DNS is a service that maps domain names (like testout.com or google.com) to IP addresses. It does not ensure that data packets are assembled in the correct order.

-HyperText Transfer Protocol (HTTP) is used for accessing pages on the world wide web. It does not ensure that data packets are assembled in the correct order.-

You've just finished installing a wireless access point for a client. Which action best protects the access point from unauthorized tampering with its configuration settings?

• Disabling DHCP

• Disabling SSID broadcast

• Changing the default administrative password

• Implementing MAC address filtering

Answer explanation

Explanation

To prevent administrative access to the access point, change the default administrator password. If you do not change the password, users can search the Internet for the default password and use it to gain access to the access point and make configuration changes.

Disabling SSID broadcast, disabling DHCP, and using MAC address filtering helps prevent unauthorized access to the wireless network.

Which of the following is a wired networking method most commonly used today by desktop PCs and other network devices to connect to a local area network?

• Token Ring

• Bluetooth

• 802.11n

• Ethernet

• ArcNet

Answer explanation

Explanation

Ethernet is a wired, local area network (LAN) standard. Most laptops and desktop computers have built-in Ethernet network ports.

Bluetooth is a wireless standard that allows the creation of short-range Personal Area Networks (PANs). Token Ring and ArcNet are older wired network standards that are nearly obsolete and not commonly used in a modern LAN. 802.11n is a wireless standard used in local area networks.

Which of the following components converts AC to DC?

• Power supply

• Voltage regulator

• Surge protector

• Capacitor

Answer explanation

Explanation

A computer's power supply converts alternating current (AC) from the wall outlet to direct current (DC) used by the computer's internal components.

A voltage regulator is an electronic device that supplies the appropriate voltage to a processor. It does not convert the power input from one form to another; it only ensures that the voltage remains at the appropriate level for the device. A surge protector protects a system from power spikes. A UPS (uninterruptable power supply) provides backup AC power using a reserve battery.

Which connector on the back of a computer is used to attach a mouse to a modern PC system?

• USB A

• RJ-45

• High-density (three row), female DB-15

• Low-density (two row), female DB-15

• Mini-DIN

Answer explanation

Explanation

A mouse is most commonly attached to a computer using a USB A connector. 6-pin mini-DIN connectors were used to attach a mouse in the past; however, mini-DIN connectors are not used today. The DB-15 connector with two rows is commonly used for joysticks. The DB-15 connector with three rows is used for connecting CRT monitors to the video card. The RJ-45 connector is used for Ethernet network connections. USB B connectors are commonly used for connecting printers and scanners.

What can be done if a computer is relying too much on virtual memory supplied by the hard drive to temporarily store information needed by the CPU?

• Upgrade the CPU.

• Install more RAM.

• Re-format the hard drive.

• Install a better video card.

Answer explanation

Explanation

The CPU relies on RAM to store information it is currently working on. If a computer runs out of RAM space, the computer relies on virtual memory, which is located on the hard drive. The problem with this is accessing the hard disk is slower compared to RAM.

Re-formatting the hard drive will not improve performance. Installing more RAM is the best choice.

Upgrading the CPU may increase performance, but more memory is a better strategy.

Installing a better video card will help the performance of some applications, but more memory is always the best choice.