Network + Chapter 4
In a chassis, the path along which air from a cool air source is conducted, pass equipment to cool it, and then out of the rack. Typically, air moves from front to back
Airflow
How far away from fluorescent lights or some other sources of EMI should cable be installed
At least 3 feet
One watt is equal to how many volts amps
1.4
When selecting a punch down block wall block time is more suitable for data connections
110 block
What is the maximum frame size for ethernet two frames on a VL AN
1522 bites
Equipment racks most commonly come and what two widths
19 inch frame and 23 inch frame
What is the industry standard for a rack in rack units
42
What is the maximum allowable distance for horizontal wiring
90 m
Slut the maximum allowed with distances for horizontal wiring for his span that connects the data jack on a walk to like data closet, and for span that connects the workstation to the data Jack respectively
90 m and 10 m
Selected to transport layer protocols that are used by the SANz
Fiber channel Iscsi
What cable type comes into different notes, single mode and multiple modes
Fiber optic
Which of the following options is not a likely source of electromagnetic interference
Fiber optic cables
Which method of transmission allow signal to travel in both directions over a medium simultaneously
Full duplex
Which method of transmission allow signal to travel in both directions over medium but in only One Direction time
Half duplex
Explain how equipment should be configured in a rack to best optimize airflow in temperature
Hardware should be close to the front and a rack maintaining system should be installed
What steps should be taken to manage documentation at a cabling plant
wire individually, make it neat, color code, label, make documentation
Describe the three different types of cabling recognized by TIA/EIA acceptable for horizontal wiring
UTP- is unshieled twisted pair STP is shielded twisted pair and fiber is fiber much faster
What Component of the backbone runs between a building floors and give you to connect and MDF and IDF are multiple IDF
Vertical cross connects
The radius of the maximum arc into which you can Lupe cable without impairing data transmission is known as what option below
Bend radius
Describe the differences between a brown out in the blackout
Brownout is temp loss of power and blackout is complete loss of power
The portion of an ethernet network in which collisions could occur if two nodes transmit data at the same time
Collision domain
Select the component of enterprise level structured cabling that serves as a location where an incoming network interface and use a building and connect with the buildings backbone cabling
Entrance facility
The field in which a Frame responsible for ensuring that data carried by the frame arise intact. It uses an algorithm, such as CRC, to accomplish this a verification
FCS frame check sequence
A power fluctuation that result in a temporary dimming of light is known as a blackout
False
Cable that is coated with frame resistant polyvinylchloride is acceptable for use plenty of areas
False
Deering termination of twisted-pair cabling what should be done to ensure minimal crosstalk is introduced
No more than 1 inch of cable should be exposed
Where is the D Mark located in relation to the structured cabling of enterprise environment
In the main distribution frame
A device that converts DC electrical energy to AC electrical energy. Better inverts will also condition the device power, which helps protect sensitive electronic equipment from power fluctuations
Inverter
Explain the difference between an inverter and a rectifier
Inverter is DC to AC and rectifier is AC to DC
In order to simplify consul access to computer and a rack, what device is typically used to provide essential portal for all devices on the rack
KVM switch
Ethernet exist at what layer of the OSI model
Layer to
The TIA/EIA standard for wall jacks in the world areas required that at least one outlet be provided for data and one for voice
Teue
They specialized storage device or group of storage devices that provide centralized fault tolerant data storage for network
NAS -network attached storage
What type of power flow involves a fluctuation of voltage levels caused by other devices on the network or by EMI
Noise
The industry standard unit for measuring rack height. Stack racks are 42 U tall to about 6 feet
Rack unit
Selected to terms below that I used to describe a UPS that provides continuous voltage to a device by switching virtually instantaneously to the battery when it detects a loss of power
Standby UPS and fail over power supply
The standard that you describe the uniform, enterprisewide cabling systems, regardless of who manufactures or sells the various parts use the system, can be referred to by what two options below
TIA/EIA -568 IEEE comercial building wiring standard
Hey NIC card cannot determine whether the frames it transmits and receives are using IP packets or a different layer 3 protocol, because the NIC does not operate higher than level two of the OSI model
True
What type of power converter change the voltage of an AC current, such as one power over the mainline for the electric company is changed for being delivered to a home
Transformer
Each type of cable has prescribed bend radius, which is the radius of the Maxim arc into which you can Lupe cable without impairing data transmission
True
If the use of a pre-existing infrastructure is desired for a S AN, wet transport layer protocol should be utilized
iscsi
