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BISCI - DCDC > Chapter 16: Information Technology > Flashcards

Chapter 16: Information Technology Flashcards

1
Q

Computer room

A

An architectural space with the primary function of accommodating data process equipment.

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2
Q

NAS

A

Network attached Storage.

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3
Q

SAN

A

Storage Area Network. A high-speed network of shared storage devices. A SAN permits storage devices attached to the SAN to be used by servers attached to the SAN.

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4
Q

Name 3 of the 7 elements that affect where ITE is placed in a computer room.

A
  1. Hot & cold aisles
  2. Dedicated application rows
  3. Dedicated equipment-type areas
  4. Aisles and walkway sizing
  5. Cabinet portability
  6. HVAC maintenance
  7. Accessibility and emergency egress
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5
Q

Centralized, end-of-row, and top-of-rack are 3 common locations for the placement of what type or network controllers?

A

Switches

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6
Q

Which network switch topology allows for servers to be in the same cabinet as the switch?

A

Top-of-rack

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7
Q

Layouts of how connections are made in a matrix of switches and servers are commonly referred to as __________.

A

Fabrics

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8
Q

Of the listed items below, which type is not an example of a type of fabric layout?
Full mesh
Interconnected mesh
Leaf and spine
Hexagon
Fat-tree
Virtual switch

A

Hexagon

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9
Q

What are the recommended maximum distances for EIA/TIA-232-F and EIA/TIA-561/562 console connections up to 20 kb/s?

A
  • 23 m (76’) over Cat 3/Class C balanced twisted-pair cabling
  • 27 m (90’) over Cat 5e/Class D or Cat 6/Class E balanced twisted-pair cabling
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10
Q

What are the recommended maximum distances for EIA/TIA-232-F and EIA/TIA-561/562 console connections up to 64 kb/s?

A
  • 8 m (27’) over Cat 3/Class C balanced twisted-pair cabling
  • 10 m (31’) over Cat 5e/Class D or Cat 6/Class E or higher balanced twisted-pair cabling
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11
Q

What is a cold site?

A

A leased or company-owned disaster recovery facility providing only the physical space for recovery operations.

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12
Q

What is a warm site?

A

A warmup site is a backup site having some, but not all, of the components necessary to immediately restore all business functions, post- disaster.

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13
Q

What is a hot site?

A

A hot site is a fully operational offside data processing facility equipped with both hardware and software systems that can very quickly assume the disaster recovery workload.

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14
Q

Of the three recovery site types which can most quickly assume the disaster recovery workload?

A

Hot

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15
Q

Define mirroring.

A

Copying data from the host system to a second system in real time.

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16
Q

Why is mirroring of critical importance?

A

It is crucial for a speedy recovery of critical data after a disaster.

17
Q

What is the function of a KVM switch?

A

It allows keyboard, video display monitor, and mouse to be switched to any of a number of computers when typically, a single person interacts with all the computers but only one at a time.

18
Q

What is the purpose of virtualization software?

A

It functions as a single physical server to host multiple virtual servers.

19
Q

Define Fiber Connection (FICON)

A

FICON enables 100-Mbps of bidirectional link rates at distances of up to 20 km over optical fiber cables.

20
Q

Define Enterprise System Connection (ESCON)

A

ESCON is an IBM optical fiber channel connection technology that provides 17-MB/sec throughput. ESCON provides direct channel-to-channel connections between mainframe systems and peripherals over optical fiber links at distances up to 60 Km (36 miles).

21
Q

What is the difference between external and internal SCSI cables?

A

External cables are used to connect SCSI devices that do not reside inside the PC; rather, they have their own enclosures and power supplies. Internal cables connect SCSI devices installed within the system enclosure.

22
Q

What is the maximum distance supported by single-ended (SE) SCSI cables?

A

6 m (20’)

23
Q

Why is the maximum distance supported by single-ended (SE) SCSI cables 6 m (20’)?

A

SE SCSI is very susceptible to noise and has a rather short distance limitation.

24
Q

What is the maximum distance supported by differential (or high-voltage differential [HVD]) SCSI cables?

A

25 m (82’)

25
Q

Identify at least one benefit of using differential SCSI.

A

Works well in noisy areas and can reach up 25 m (82’)

26
Q

What is the maximum distance supported by low-voltage differential (LVD) SCSI cables ?

A

12 m (39’)

27
Q

What type of facility BAS network are included in a data center?

A
  • HVAC
  • Fire Alarm
  • Physical Security
  • Computer Room Power Monitoring
  • Electrical Distribution Control Lighting

BISCI - DCDC (18 decks)

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