Core 1 Flashcards
Color Depth
Either the number of bits used to indicate the color of a single pixel, video frame buffer, or the number of bits used
How to reset the BIOS password
Removing the CMOS battery, wait a few minutes, reinsert the CMOS battery, and then attempt to power on the computer again
Which of the following DC voltages are not found within a printer when the laser printer converts AC power into DC power for use?
- 24 VDC
Rapid Elasticity
Can be a security threat to data due to data remanences.
Metered Services
Pre-paid or pay-per-use based on the actual usage of the service resources
Resource Pooling
Allows a virtual environment to allocate memory and processing capacity of a VMs use
On-Demand
available at any time
Coaxial Cable
used to transmit video, communications, and audio
protect the data transmission from the effects of EMI
Optical Fiber
ultra fine core of glass to carry the light pulses along the core and a protective coating
Fiber Optic
terminated by a connect
use light signals to carry data across a cable at high bandwidths
VM Escapes
malware running on a guest OS jumping to another guest or host
BIGGEST THREAT to virtualized systems
Virtual Network Interface card (vNIC)
the configuration of a VM connected to a network
Rogue VM
a VM that has been installed without authorization
VM sprawl
the uncontrolled deployment of more and more VMs
Lights steady on a network interface card (NIC)
Light is blinking on the NIC
There is no network activity
Data is passing over the NIC to the network
Service Location Protocol ( SLP)
is a protocol or method of organizing and locating the resources ( printers, disk drives, etc)
uses port 427
HTTPS
secure protocol used to provide web content to browsers
Port 443
LDAP
protocol used to access and update information
uses port 389
Server Message Block ( SMB)
used for requesting files from windows servers and delivering them
port 445
FTP
sends the data over port 20
eSATA
used for connecting external drives to provide additional storage, must use shielded cable
Syslog server
used to capture logs from different devices
Proxy Server
acts as the in between for a client requesting a resource and the server providing the resource
Domain Name System (DNS)
uses port 53
Dynamic Host Configuration Protocol (DHCP)
port 67
automatically assign IP addresses
Intrusion prevention system (IPS)
detects and prevents threats
Intrusion detection system (IDS)
detects threats
Accelerated Graphics Port (AGP)
parallel expansion card standard that was designed for attaching a video card to a computer system
What can cause system reboots / continuous reboots
a bad or faulty RAM module
diminished system performance
slow loading of websites and programs
OS not found, error at boot time is an indication that
MBR (Master Boot Record) is corrupted or faulty
Reboot into the windows recovery mode and use the bootrec/fixboot
USB 1.1
USB 2.0
12 Mbps
480 Mbps
If there were configuration changes to the DNS or DHCP server then
it would limit connectivity completely instead of simply slowing down the connection
If the network changed from DHCP to static assignments, then
the workstations would not get an APIPA address and would not have connected to the network at a slower speed
Clicking noises means
most likely a hard drive failure
Whirring or grinding noise mean
most likely the cooling fan
Double images or ghost printing occurs
Drum is the issue
Zigbee
is an open-source wireless communication protocol used for home automation
2.4 GHz frequency
192.168.1.254
IPv4
00:AB:FA:B1:07:34
Mac Address
::1
IPv6 address
The computer continually crashing when using certain apps, the system will stop working and BSOD. What is the cause of the error
Failure or corruption of the memory
Latency
time of delay between when a packet is sent and recieved
Throttling
slowing or speeding of an internet service
Refresh rate
describes how many times the image on the monitor changes per second
Frame rate
the number of times the image in a video stream changes per second
Resolution
the measure of the number of picture pixels
