Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CompTIA Network+ > Network Availability > Flashcards

Network Availability Flashcards

1
Q

Network Availability

A

Measure of how well a computer network can respond to connectivity and
performance demands that are placed upon it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Availability

A

Concerned with being up and operational

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Mean Time to Repair (MTTR)

A

Measures the average time it takes to repair a network

device when it breaks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Mean Time Between Failures (MTBF)

A

Measures the average time between failures of a device

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Hardware Redundancy

A

Devices with two network interface cards (NICs), hard drives, or internal
power supplies
Active-Active:
▪ Multiple NICs are active at the same time
Active-Passive:
▪ One NIC is active at a time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Network Interface Card Teaming

A

Using a group of network interface cards for load balancing and failover
on a server or other device

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Virtual Router Redundancy Protocol (VRRP)/(FHRP)

A

▪ Allows for active router and standby router

▪ Creates virtual router as the default gateway

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Link Aggregation Control Protocol (LACP)

A

▪ Achieves redundancy by having multiple links
between devices
▪ Load balancing occurs over multiple links
▪ Multiple links appear as single logical link

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Multipathing

A

Creates more than one physical path between the server and its storage
devices for better fault tolerance and performance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Cold Sites

A

▪ An available building that does not have any hardware or software in
place or configured
▪ While recovery is possible, it is going to be slow and time-consuming

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Warm Sites

A

▪ An available building that already contains a lot of the equipment
▪ Restoral time is between 24 hours and seven days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Hot Sites

A

▪ An available building that already has the equipment and data in place
and configured
▪ Minimal downtime and with nearly identical service levels maintained

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Cloud Site

A

Allows for the creation of a recovery version of an organization’s
enterprise network in the cloud

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Recovery Time Objective (RTO)

A

Time and service level within which a business process
must be restored after a disaster to avoid unacceptable
consequences
How much time did it
take to recover after the notification of a business process
disruption?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Recovery Point Objective (RPO)

A

Interval of time during a disruption before data lost exceeds threshold

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Backup and Recovery

A

▪ Full
● Complete backup is the safest and most comprehensive; Time
consuming and costly
▪ Incremental
● Backup only data changed since last backup
▪ Differential
● Only backups data since the last full backup
▪ Snapshots
● Read-only copy of data frozen in time (VMs)

17
Q

Uninterruptible Power Supply (UPS)

A

▪ Provides emergency power to a load when the input power source or
main power fails
▪ Great for short duration power outages (less than 15 minutes)

18
Q

Power Distribution Unit (PDU)

A

▪ Distributes electric power, especially to racks of computers and
networking equipment located within a data center
▪ PDUs combined with a UPS or a generator can provide power during a
blackout

19
Q

Generator

A

▪ Provides long-term power during a power outage in a region
● Takes a while to start up
● Hot and cold aisle concept

20
Q

Wet Pipe System

A

Using a sprinkler system and pipes that always contain water

21
Q

Delay

A

Time a packet travels from source to destination

Measured in milliseconds (ms)

22
Q

Jitter

A

Uneven arrival of packets

Especially harmful in VoIP

23
Q

Drops

A

Occurs during link congestion

Router’s interface queue overflows and causes packet loss

24
Q

Policing

A

Typically discards packets that exceed a configured rate limit
(speed limit)
Dropped packets result in retransmissions
Recommended for higher-speed interfaces

25
Q

Shaping

A

Buffers (delays) traffic exceeding configured rate

Recommended for slower-speed interfaces

CompTIA Network+ (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions