Professor Messer - Core 1 Practice
Exam (A)
Order these technologies from fastest throughput to slowest:
- 802.11g
- USB 3.0
- SATA Revision 3.0
- FireWire 800
- Thunderbolt 3
- 1000BASE-T - ANSThunderbolt 3 - 40 gigabits/second
SATA Revision 3.0 - 6 gigabits/second
USB 3.0 - 5 gigabits/second
1000BASE-T - 1 gigabit/second
FireWire 800 - 800 megabits/second
802.11g - 54 megabits/second
What is throughput? - ANSThe rate of successful message delivery over a communication
channel. Or rate of production or rate at which something is processed.
Match the port number to the protocol. Not all port numbers will be used:
Port Numbers:
- tcp/389
- tcp/25
- tcp/22
- tcp/80
- tcp/445
- tcp/23
- tcp/110
- udp/161
- udp/53
- tcp/3389
- tcp/143
- tcp/443
Protocols:
- HTTPS
- LDAP
- DNS
- IMAP
- SNMP
- RDP
- SSH - ANStcp/443 - HTTPS - HyperText Transfer Protocol Secure
,tcp/389 - LDAP - Lightweight Directory Access Protocol
udp/53 - DNS - Domain Name System
tcp/143 - IMAP - Internet Message Access Protocol
udp/161 - SNMP - Simple Network Management Protocol
tcp/3389 - RDP - Remote Desktop Protocol
tcp/22 - SSH - Secure Shell
What does PCI stand for? - ANSPeripheral Component Interconnect
What are the main differences between the four RAID types?
- RAID 0
- RAID 1
- RAID 5
- RAID 1+0 - ANSRAID 0 - Perform "striping" which means to put one block of a file on one
drive, another block on another drive, and so on. 0 redundancy. If one drive fails, then out of
luck.
RAID 1 - Mirrors info across different drives. While essentially doubling the amount of drive
space needed, if one drive fails, no downtime and all data is safe.
RAID 5 - Striping with parity. Starts the same as RAID 0, but there's a parity block on the last
drive. Meaning if we lose one drive, we're still able to reconstruct the data. Doesn't use a lot
of drive space but takes a small performance hit when reconstructing the data. Complete
redundancy.
RAID 1+0 - Combines performance of RAID 0 and the redundancy of RAID 1, "stripe of
mirrors." At least four drives are required.
The printer in the accounting department has stopped all printing processes. The print queue
shows that there are seven jobs in the queue that are waiting to be printed. Which of the
following would be the BEST next troubleshooting step?
A. Send a test job to the printer and move it to the top of the queue B. Restart the printer's
spooler
C. Install an updated version of the printer driver
D. Delete everything in the queue and resend the print jobs - ANSCorrect Answer:
B. Restart the printer's spooler.
The print spooler is the software responsible for storing print jobs and sending them to the
printer. If the printer spooler has failed or has stopped, then none of the print jobs will be sent
to the printer.
,Incorrect Answers:
A. Send a test job to the printer and move it to the top of the queue.
Since the print spooler is the issue, it won't matter where a print job might be in the queue. A
test print job will sit at the top of the queue just like any other print job.
C. Install an updated version of the printer driver.
The printer driver on a client workstation is responsible for formatting the print job in a way
that the printer can properly interpret during the printing process. Changing the print driver
won't fix problems with the print spooler.
D. Delete everything in the queue and resend the print jobs.
If the spooler is having problems, then deleting the print jobs will only require users to resend
the print requests, which will then sit in the queue and not print.
A system administrator has connected an external USB drive to a computer to transfer some
documents. When booting the computer, the system tries to boot from the external drive and
gives an error message. Which of the following would be the BEST way to prevent the USB
drive from booting?
A. Modify the BIOS to boot from the internal hard drive
B. Modify the boot order in Windows Disk Management
C. Rebuild the MBR on the external hard drive
D. Disable the external drive in Device Manager - ANSCorrect Answer:
A. Modify the BIOS to boot from the internal hard drive. The boot order is managed in the
system BIOS, and one way to avoid the computer from attempting to boot from an external
storage device is to move the internal drive to have a higher boot priority
Incorrect Answers:
B. Modify the boot order in Windows Disk Management. Windows Disk Management is not
used to configure the boot order of the computer. By the time Windows has loaded, the boot
order has already been determined. The boot order is configured in the system BIOS.
C. Rebuild the MBR on the external hard drive. Rebuilding the MBR (Master Boot Record) of
the external hard drive will not prevent the computer from attempting to boot to the drive.
Rebuilding the MBR would only be necessary if the boot record was erased or damaged.
D. Disable the external drive in Device Manager.
Since Windows Device Manager is only active after the system boots, disabling the external
drive would not prevent the boot process. Disabling the drive in Device Manager would only
prevent Windows from accessing the drive once the system was booted.
A computer has been configured with an SSD, a high-end video adapter, and the maximum
amount of RAM. Which of the following would be the MOST likely use for this computer?
A. Thin client
B. Network attached storage device
C. CAD/CAM workstation
, D. VDI client - ANSCorrect Answer:
C. CAD/CAM workstation.
The graphical designs created by a CAD/CAM (Computer Aided Design / Computer Aided
Manufacturing) computer requires high-speed SSD (Solid State Drive) storage, high-end
video, and as much RAM as possible.
Incorrect Answers:
A. Thin client.
A thin client is a computer with the minimum hardware resources required to perform a
remote desktop or remote control function. The applications used on a thin client are run on
a remote server, so the local device does not require any high-end components.
B. Network attached storage device.
A NAS (Network Attached Storage) server requires plenty of storage and high-speed
networking, but does not require advanced video functionality.
D. VDI client.
VDI (Virtual Desktop Infrastructure) clients display applications that are running on other
servers, and it's very common to run VDI clients on thin clients or other minimally-configured
systems.
A network connection in a conference room was installed years ago, and there's no
documentation for the cable run. Connecting a device to the cable results in a successful
Ethernet connection, so the other end of the cable should terminate somewhere in the wiring
closet. Which of these tools would be the best choice to find the other end of the network
connection?
A. Cable tester
B. Tone generator
C. Multimeter
D. Crimper - ANSCorrect Answer:
B. Tone generator.
A tone generator is used to produce an analog tone on one cable, and an inductive probe is
used to identify the location of the cable on the other end.
Incorrect Answers:
A. Cable tester.
A cable tester could be used to confirm the wire map of the cable, but you would first need to
locate both ends before that would be possible. A cable tester doesn't provide a way to
locate both ends of a cable.
C. Multimeter.
A multimeter could be used to verify continuity and the wire map of the cable, but both ends
of the cable would need to be close to the multimeter. A multimeter can't be used to locate
both ends of a cable.
D. Crimper.
If the RJ45 connector on the cable was faulty, a crimper could be used to attach a new
connector to the cable.
Exam (A)
Order these technologies from fastest throughput to slowest:
- 802.11g
- USB 3.0
- SATA Revision 3.0
- FireWire 800
- Thunderbolt 3
- 1000BASE-T - ANSThunderbolt 3 - 40 gigabits/second
SATA Revision 3.0 - 6 gigabits/second
USB 3.0 - 5 gigabits/second
1000BASE-T - 1 gigabit/second
FireWire 800 - 800 megabits/second
802.11g - 54 megabits/second
What is throughput? - ANSThe rate of successful message delivery over a communication
channel. Or rate of production or rate at which something is processed.
Match the port number to the protocol. Not all port numbers will be used:
Port Numbers:
- tcp/389
- tcp/25
- tcp/22
- tcp/80
- tcp/445
- tcp/23
- tcp/110
- udp/161
- udp/53
- tcp/3389
- tcp/143
- tcp/443
Protocols:
- HTTPS
- LDAP
- DNS
- IMAP
- SNMP
- RDP
- SSH - ANStcp/443 - HTTPS - HyperText Transfer Protocol Secure
,tcp/389 - LDAP - Lightweight Directory Access Protocol
udp/53 - DNS - Domain Name System
tcp/143 - IMAP - Internet Message Access Protocol
udp/161 - SNMP - Simple Network Management Protocol
tcp/3389 - RDP - Remote Desktop Protocol
tcp/22 - SSH - Secure Shell
What does PCI stand for? - ANSPeripheral Component Interconnect
What are the main differences between the four RAID types?
- RAID 0
- RAID 1
- RAID 5
- RAID 1+0 - ANSRAID 0 - Perform "striping" which means to put one block of a file on one
drive, another block on another drive, and so on. 0 redundancy. If one drive fails, then out of
luck.
RAID 1 - Mirrors info across different drives. While essentially doubling the amount of drive
space needed, if one drive fails, no downtime and all data is safe.
RAID 5 - Striping with parity. Starts the same as RAID 0, but there's a parity block on the last
drive. Meaning if we lose one drive, we're still able to reconstruct the data. Doesn't use a lot
of drive space but takes a small performance hit when reconstructing the data. Complete
redundancy.
RAID 1+0 - Combines performance of RAID 0 and the redundancy of RAID 1, "stripe of
mirrors." At least four drives are required.
The printer in the accounting department has stopped all printing processes. The print queue
shows that there are seven jobs in the queue that are waiting to be printed. Which of the
following would be the BEST next troubleshooting step?
A. Send a test job to the printer and move it to the top of the queue B. Restart the printer's
spooler
C. Install an updated version of the printer driver
D. Delete everything in the queue and resend the print jobs - ANSCorrect Answer:
B. Restart the printer's spooler.
The print spooler is the software responsible for storing print jobs and sending them to the
printer. If the printer spooler has failed or has stopped, then none of the print jobs will be sent
to the printer.
,Incorrect Answers:
A. Send a test job to the printer and move it to the top of the queue.
Since the print spooler is the issue, it won't matter where a print job might be in the queue. A
test print job will sit at the top of the queue just like any other print job.
C. Install an updated version of the printer driver.
The printer driver on a client workstation is responsible for formatting the print job in a way
that the printer can properly interpret during the printing process. Changing the print driver
won't fix problems with the print spooler.
D. Delete everything in the queue and resend the print jobs.
If the spooler is having problems, then deleting the print jobs will only require users to resend
the print requests, which will then sit in the queue and not print.
A system administrator has connected an external USB drive to a computer to transfer some
documents. When booting the computer, the system tries to boot from the external drive and
gives an error message. Which of the following would be the BEST way to prevent the USB
drive from booting?
A. Modify the BIOS to boot from the internal hard drive
B. Modify the boot order in Windows Disk Management
C. Rebuild the MBR on the external hard drive
D. Disable the external drive in Device Manager - ANSCorrect Answer:
A. Modify the BIOS to boot from the internal hard drive. The boot order is managed in the
system BIOS, and one way to avoid the computer from attempting to boot from an external
storage device is to move the internal drive to have a higher boot priority
Incorrect Answers:
B. Modify the boot order in Windows Disk Management. Windows Disk Management is not
used to configure the boot order of the computer. By the time Windows has loaded, the boot
order has already been determined. The boot order is configured in the system BIOS.
C. Rebuild the MBR on the external hard drive. Rebuilding the MBR (Master Boot Record) of
the external hard drive will not prevent the computer from attempting to boot to the drive.
Rebuilding the MBR would only be necessary if the boot record was erased or damaged.
D. Disable the external drive in Device Manager.
Since Windows Device Manager is only active after the system boots, disabling the external
drive would not prevent the boot process. Disabling the drive in Device Manager would only
prevent Windows from accessing the drive once the system was booted.
A computer has been configured with an SSD, a high-end video adapter, and the maximum
amount of RAM. Which of the following would be the MOST likely use for this computer?
A. Thin client
B. Network attached storage device
C. CAD/CAM workstation
, D. VDI client - ANSCorrect Answer:
C. CAD/CAM workstation.
The graphical designs created by a CAD/CAM (Computer Aided Design / Computer Aided
Manufacturing) computer requires high-speed SSD (Solid State Drive) storage, high-end
video, and as much RAM as possible.
Incorrect Answers:
A. Thin client.
A thin client is a computer with the minimum hardware resources required to perform a
remote desktop or remote control function. The applications used on a thin client are run on
a remote server, so the local device does not require any high-end components.
B. Network attached storage device.
A NAS (Network Attached Storage) server requires plenty of storage and high-speed
networking, but does not require advanced video functionality.
D. VDI client.
VDI (Virtual Desktop Infrastructure) clients display applications that are running on other
servers, and it's very common to run VDI clients on thin clients or other minimally-configured
systems.
A network connection in a conference room was installed years ago, and there's no
documentation for the cable run. Connecting a device to the cable results in a successful
Ethernet connection, so the other end of the cable should terminate somewhere in the wiring
closet. Which of these tools would be the best choice to find the other end of the network
connection?
A. Cable tester
B. Tone generator
C. Multimeter
D. Crimper - ANSCorrect Answer:
B. Tone generator.
A tone generator is used to produce an analog tone on one cable, and an inductive probe is
used to identify the location of the cable on the other end.
Incorrect Answers:
A. Cable tester.
A cable tester could be used to confirm the wire map of the cable, but you would first need to
locate both ends before that would be possible. A cable tester doesn't provide a way to
locate both ends of a cable.
C. Multimeter.
A multimeter could be used to verify continuity and the wire map of the cable, but both ends
of the cable would need to be close to the multimeter. A multimeter can't be used to locate
both ends of a cable.
D. Crimper.
If the RJ45 connector on the cable was faulty, a crimper could be used to attach a new
connector to the cable.
