Optimization & Fault Tolerance Flashcards
(44 cards)
(Bandwidth Shaper) A bandwidth shaper is used to control _______ _______.
network, traffic
(Bandwidth Shaper) You can use it to set upload and download ______ on less important ____, such as recreation.
limits, data
(Bandwidth Shaper) You can also prioritize important data, like business needs, and make sure that it has the highest ______ and ________ limits.
upload, download
(Traffic Shaping) The term “traffic shaping” is similar to what a bandwidth shaper does. It prioritizes ____________ and guarantees _________ for more important services.
applications, bandwidth
(Load Balancer) A load balancer is a piece of ________ or ________ that is used to evenly distribute data activity across a ______ so that no single server or computer becomes overwhelmed with the ________.
hardware, software, network. workload
(Load Balancer) For example, here we have a network, and one of the servers is getting more network activity than the other server. So, to resolve this, we can add a ____ ________ so that both servers are sharing the network activity ______.
load, balancer, evenly
(QoS) QoS stands for _______ __ _______, and in computer networking, this is a term that is used to provide a guarantee of ____ ________ within a certain period of time.
Quality, of, Service, data, delivery
(Port Blocking) Port blocking is one of the ways to provide ________ to a _______.
security, network
(Port Blocking) Port blocking is done on the ________, and as a network administrator, you can control which ports should be opened or closed depending upon the ___________.
firewall, application
(Port Blocking) For example, port 80 and port 110. If we close these ports, then our network will not be able to receive any web pages from ____ or _____. But since we kept port 21 open, then ___ functions normally.
HTTP, email, FTP
(Port Blocking) Port blocking can be a great way to keep your _______ ____, but it can also cause problems if you mistakenly close the _____ _____.
network, safe, wrong, ports
(High Availability) High availability is a term that is used to guarantee a period of ______ or _________ _________.
- In order to keep a network in constant _________.
uptime, continual, operation, operation
(Power Fault Tol) Power outages can happen for several reasons, such as storms and blackouts. So, in order to prevent a disruption in network operation from a loss of power, you need to use a ___.
UPS
(Power Fault Tol) UPS stands for _____________ _____ ______. It’s a battery backup that supplies power to your _________ if a power outage were to happen.
Uninterrupted, Power, Supply, equipment
(Power Fault Tol) as an example, if we were to disconnect the AC power from this computer, the computer will remain on because it’s connected to a ___, and it is now running from _______ _____ from the UPS.
UPS, battery, power
(Power Fault Tol) In addition to supplying backup power, UPS also protects against ______ and ______.
surges, spikes
(Link Redundancy)
Link redundancy is having the ability to have a continuous __________ to the network in the event of a _______.
connection, failure
(Link Redundancy) if you are using a broadband connection, you can have an ISDN line as a ______ if the broadband line were to fail. Or you can also have a secondary network card by having one as a primary and the other as a secondary. So if the _______ card were to fail, the _________ card would automatically kick in, and you would still have a continuous __________.
backup, primary, secondary, connection
(Backup Services) There is also backup services, and this could be defined as having backup servers to keep your network in ________ _________.
constant, operation
(Backup Services) A standby server is a secondary server with the _____ _____________ as the _______ ______.
-Now, this server is not actually being used, but its data is constantly being updated with the _______ server. So if something were to happen to the primary server, the standby server would immediately ________.
exact, configuration, primary, server, primary, takeover
(Backup Services) Server clustering is when a company has a group of servers used for ____ _________ and _____ _________. In this setup, the servers would _____ the workload if one of the servers fails.
And this type of setup works best if the servers were in different geographical locations.
load, balancing, fault, tolerance, share
(Disaster Recovery) Fault tolerance can be defined as the prevention of ____ ____ if a network component fails. But in the event that fault tolerance _____, then ________ ________ would be our last option.
data, loss, fails, disaster, recovery
(Disaster Recovery) Disaster recovery is a process of rebuilding an organization’s ____ after a ________ has happened, such as data loss.
data, disaster
(Disaster Recovery) So even if we implemented fault tolerance measures, we still need to back up our ____.
data
