What is an RTO?

What is an RTO?

• Recovery Time Objective
• Real-Time Output
• Really Terrifying Oddball
• Recovery Task Outputs 

EXPLANATION

RTO defined

RTO, or Recovery Time Objective, is the target time you set for the recovery of your IT and business activities after a disaster has struck. The goal here is to calculate how quickly you need to recover, which can then dictate the type or preparations you need to implement and the overall budget you should assign to business continuity.
If, for example, you find that your RTO is five hours, meaning your business can survive with systems down for this amount of time, then you will need to ensure a high level of preparation and a higher budget to ensure that systems can be recovered quickly. On the other hand, if the RTO is two weeks, then you can probably budget less and invest in less advanced solutions.

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Which of these isn't a thing?

Which of these isn't a thing?

• D2D2T
• LTO-5
• D2T
• LOT2 

EXPLANATION

 Disk-to-disk-to-tape (D2D2T) is a data storage and backup technique where data is backed up on a disk before it is copied to a backup tape device. This databackup process temporarily first stores the primary disk content to another diskand then to the backup tape device.

Linear Tape-Open (LTO) is a magnetic tape data storage technology originally developed in the late 1990s as an open standards alternative to the proprietary magnetic tape formats that were available at the time. ... LTO is widely used with small and large computer systems, especially for backup.

Dist to tape (D2T) is a backup methodology in which data is backed up directly from a disk (typically a hard disk) to a magnetic tape. This process is widely applied in enterprises where the archival stability is critical, allowing a disaster recovery plan to recover data

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What's the main difference between Category 5 and Category 5e cable?

What's the main difference between Category 5 and Category 5e cable?

• Improved crosstalk protection
• More fire resistant
• Faster throughput
• Nothing, it's just a certification 

EXPLANATION

[Q] What's the difference between CAT 5 cable and CAT 5e cable?
[A] CAT 5 cable and CAT 5e cable have several differences, the most important are as follows:

• Network support - CAT 5 cable will support 10/100 Ethernet. That is, Ethernet and Fast Ethernet. CAT 5e cable will support Ethernet, Fast Ethernet, and Gigabit Ethernet. CAT 5e Cable is completely backwards compatible, and can be used in any application in which you would normally use CAT 5 cable.
• Less cross talk - Cross talk is the electrical interference that results when one wire's signal effects another wire's signal. CAT 5e cable has been improved over CAT 5 cable in this respect, and cross talk has been greatly reduced.
• Bandwidth - This is directly related to network support, in the sense that the bandwidth is the information-carrying capacity of a system. The greater the bandwidth, the greater the information-carrying capacity in a given period of time. CAT 5e cable is rated at 350 megahertz, and it is this increased bandwidth (compared to CAT 5 cable) that allows it to support Gigabit Ethernet.

If you are unsure whether to order CAT 5 OR CAT 5e, we recommend ordering CAT 5e. CAT 5e is completely backwards compatible and we do not charge any additional amount for it. The improvements made in CAT 5e over the original CAT 5 Cable are astonishing, so it will always be the right choice between the two.
CAT 5 Cable will still be sufficient for many applications. In fact, there are still companies operating today that have special requirements for CAT 5. These will be the exceptions of course, because almost all new installations are being done with CAT 5e. The improved signal carrying capacity of the cable is the primary reason.
CAT 5e Cable also has improved durability, due to improvements in the quality and thickness of the PVC protective jacket. It is more than suitable for most data cabling requirements.
Keywords: CAT 5, CAT 5e

 

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What cable category do you need for 10 Gigabit Ethernet?

What cable category do you need for 10 Gigabit Ethernet?

• Cat 5e
• Cat 5
• Cat 6a
• Cat 3 

EXPLANATION

Category	Shielding	Max Transmission Speed (at 100 meters)	Max Bandwidth
Cat 3	Unshielded	10 Mbps	16 MHz
Cat 5	Unshielded	10/100 Mbps	100 MHz
Cat 5e	Unshielded	1,000 Mbps / 1 Gbps	100 MHz
Cat 6	Shielded or Unshielded	1,000 Mbps / 1 Gbps	250 MHz
Cat 6a	Shielded	10,000 Mbps / 10 Gbps	500 MHz
Cat 7	Shielded	10,000 Mbps / 10 Gbps	600 MHz
Cat 7a	Shielded	10,000 Mbps/10 Gbps	1,000Mhz

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Which of the following cable types is most susceptible to electromagnetic interference?

Which of the following cable types is most susceptible to electromagnetic interference?

• Fiber optic
• STP
• Coaxial
• UTP 

EXPLANATION

UTP cable is susceptible to EMI.
Incorrect Answers:
B: RG-8 coaxial cable is also susceptible to EMI, but not to the same extent as UTP.
C: Fiber optic cable is immune to EMI.References:David Groth and Dan Newland, A+ Complete
Study Guide (2nd Edition), Sybex, Alameda CA, 2002, pp. 325,327.David Groth and Toby
Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp. 19-20, 25-27.
D: Fiber optic cable is immune to EMI.References:David Groth and Dan Newland, A+ Complete
Study Guide (2nd Edition), Sybex, Alameda CA, 2002, pp. 325,327.David Groth and Toby
Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp. 19-20, 25-27.

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