on 22-Oct-2019 (Tue)

Question

In linux, for ssh port forwarding, in [...] forwarding you are accessing a service on a remote machine (sometimes through a bastion server) whereas in [...] forwarding you are allowing someone to access your local machine via a remote machine. <----LOOKING FOR 2 DIFFERENT WORDS HERE!

Answer

local, remote

Question

In AWS IAM, the JSON-defined policies contain an array of Statements, each having the keys: Effect, [...] and Resource.

Answer

Action

^^^ e.g.: To allow a user to rotate their own access key, you have Effect is "Allow" (can either be "Allow" or "Deny"), the Action is anything related to Accesskey (e.g. Create, Delete, etc) and the Resource is just their own IAM user.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "iam:*AccessKey*"
            ],
            "Resource": [
                "arn:aws:iam::*:user/${aws:username}"
            ]
        }
    ]
}

Question

In AWS, you cannot use Security Group rules to restrict a specific IP (SG rules are "Allow" only, not "Deny"), so for this case you should use a VPC [...] [...] [...] [...] instead.

Answer

Network Access Control List (NACL)

Question

circulatory system - divisions?

Answer

the systemic circulation and the pulmonary circulation

Question

arteries - main function?

Answer

transport blood under high pressure to the tissues

Question

arterioles - main function?

Answer

control conduits

Question

KAPITEL 1 Fourierreihen 1. Definition, Darstellungssatz

Answer

F ourierreihen

Question

Sei L eine feste positive Zahl. Fourierreihen sind Reihen der Form

Answer

[default - edit me]

Tags

#has-images

Question

sdasd

Answer

asdasdsadasdasd

Question

When a table is created in SQL, this is designated on the primary key.

Answer

what is an index?

Question

just as they can be used in designating a primary key, multiple of these can be used in creating an index.

Answer

what are columns?

Question

In SQL, this does not necessarily indicate that there is no value for a particular data field.

Answer

what is null?

Question

After the column description, this can be entered to indicate that null values are not acceptable in SQL.

Answer

what is “not null”?

Question

An SQL table can be designed without this default.

Answer

what is the null default?

Question

It can be helpful to employ this in place of null values in a display of data in SQL.

Answer

what is a descriptive name?

Question

UDF stands for this in SQL.

Answer

what is "User-Defined Function?"

Question

what SQL statment is used to define a UDF?

Answer

what is CREATE FUNCTION?

Question

this can increase the number of times SQL must refer to an index.

Answer

what is normalization?

Question

SQL will conduct data searches based on the primary key index unless this is specified.

Answer

what is another index?

Question

Text-based descriptive data (such as comments, notes, and descrip- tions) cannot be used in predictive models without first being converted to this.

Answer

what is a simpler form?

Question

Data scientists accomplish this by searching for patterns in strings of raw data, which can be manipu- lated with a computer program’s string functions.

Answer

what is preparing text-based descriptive data for predictive modeling?

Question

the number of characters in the string are returned by this function in SQL.

Answer

what is LEN (or LENGTH) ?

Question

This function is useful if a data scientist needs to know the length of the data field in SQL.

Answer

what is LEN (or LENGTH)?

Question

to find the index of a string within another string in SQL, this function can be used.

Answer

what is FIELD?

Question

o combine two different strings into one in SQL, this function is used.

Answer

what is CONCAT?

Question

this function extracts characters from the left of a string in SQL

Answer

what is LEFT?

Question

this function extracts characters from the right of a string in SQL.

Answer

what is RIGHT?

Question

this function extracts a substring of a specific number of characters from a string in SQL.

Answer

what is SUBSTRING?

Question

Perl stands for this.

Answer

what is Practical Extraction and Report Language?

Question

Perl consistently uses these to find specific text.

Answer

what are regular expressions?

Question

This operator in Perl returns a true or false value based on whether it finds a match for the regular expression that fol- lows the operator.

Answer

what is "m//" ?

Question

Perl needs to know where one of these begins and ends.

Answer

what is a regular expression?

Question

to indicate both the beginning and end of regular expressions, these are typically used.

Answer

What are slash marks (/) ?

Question

any pos- sible match will be returned by these regular expressions.

Answer

what are greedy regular expressions?

Question

Perl’s regular expressions are described as this.

Answer

what is greedy?

Question

Perl has functions that check for subpatterns. This can be used to find matches

Answer

what is a lookahead?

Question

to create one regular expres- sion to change part of the expression slightly in each instance in which it applies, this can be used.

Answer

what is a backreference?

Question

A Perl regular expression can be used to find one out of a list of these.

Answer

what are alternatives?

Question

this kind of function allows a data scientist to search for the same regular function in every entry in a list. It can be used to return all the matches, or it can be used to simply count the number of matches.

Answer

what is a grep function?

Question

in Perl, this operator is similar to the m / / / operator except that it can replace each match found.

Answer

what is s/// ?

Question

in Perl, this function can split a string and return a list of strings.

Answer

what is the Split function?

Question

these are the default type of regular expression used in R.

Answer

what are extended regular expressions?

Question

in addition to the default, R can use this type of regular expression.

Answer

what are Perl-like regular expressions?

Question

In AWS (and computing in general), [...]s are big magnetic disk drives (that you put in computer) that store lots of data but are slow on read/write, whereas [...]s are more compact (non-magnetic) disks that store less data but are fast on read/wirte. <-- LOOKING FOR DIFFERENT ACRONYM FOR EACH OCULSION

Answer

HDD (Hard Disk Drives) / SSD (Solid State Drives)

Question

In AWS, there are 5 types of EBS storage/disk Volumes you can attach to your EC2 instance: [...] [...] [...] (API code: [...]), Provisioned IOPS SSD (API code: io1), Throughput Optimized HDD (API code: st1), COLD HDD (API code: sc1), and Magnetic (API code: standard)

Answer

General Puporpose SSD (API code: gp2)

^^ General Purpose SSD (gp2), is for most workloads (is default)
^^^ Provisioned IOPS (input/outputs per second) SSDS (io1), is for read/write intensive workloads, e.g. databases
^^^^ Throughput optimized HDD (st1), is for big data and data warehousing, because magnetic HDD disks are for large data sizes but slow read/write
^^^^^ Cold HDD (sc1), is for things like File Servers (less read/writes), even slower than Throughput Optimized HDD
^^^^^^ Magnetic (standard) is the slowest so is for data archiving (if you choose not use glacier)

Question

In AWS, there are 5 types of EBS storage/disk Volumes you can attach to your EC2 instance: General Puporpose SSD (API code: gp2), [...] [...] [...] (API code: [...] ), Throughput Optimized HDD (API code: st1), COLD HDD (API code: sc1), and Magnetic (API code: standard)

Answer

Provisioned IOPS SSD (API code: io1)

^^ General Purpose SSD (gp2), is for most workloads (is default)
^^^ Provisioned IOPS (input/outputs per second) SSDS (io1), is for read/write intensive workloads, e.g. databases
^^^^ Throughput optimized HDD (st1), is for big data and data warehousing, because magnetic HDD disks are for large data sizes but slow read/write
^^^^^ Cold HDD (sc1), is for things like File Servers (less read/writes), even slower than Throughput Optimized HDD
^^^^^^ Magnetic (standard) is the slowest so is for data archiving (if you choose not use glacier)

Question

In AWS, there are 5 types of EBS storage/disk Volumes you can attach to your EC2 instance: General Puporpose SSD (API code: gp2), Provisioned IOPS SSD (API code: io1), [...] [...] [...] (API code: [...] ), COLD HDD (API code: sc1), and Magnetic (API code: standard)

Answer

Throughput Optimized HDD (API code: st1)

^^ General Purpose SSD (gp2), is for most workloads (is default)
^^^ Provisioned IOPS (input/outputs per second) SSDS (io1), is for read/write intensive workloads, e.g. databases
^^^^ Throughput optimized HDD (st1), is for big data and data warehousing, because magnetic HDD disks are for large data sizes but slow read/write
^^^^^ Cold HDD (sc1), is for things like File Servers (less read/writes), even slower than Throughput Optimized HDD
^^^^^^ Magnetic (standard) is the slowest so is for data archiving (if you choose not use glacier)

Question

In AWS, there are 5 types of EBS storage/disk Volumes you can attach to your EC2 instance: General Puporpose SSD (API code: gp2), Provisioned IOPS SSD (API code: io1), Throughput Optimized HDD (API code: st1), [...] [...] (API code: [...]), and Magnetic (API code: standard)

Answer

Cold HDD (API code: sc1)

^^ General Purpose SSD (gp2), is for most workloads (is default)
^^^ Provisioned IOPS (input/outputs per second) SSDS (io1), is for read/write intensive workloads, e.g. databases
^^^^ Throughput optimized HDD (st1), is for big data and data warehousing, because magnetic HDD disks are for large data sizes but slow read/write
^^^^^ Cold HDD (sc1), is for things like File Servers (less read/writes), even slower than Throughput Optimized HDD
^^^^^^ Magnetic (standard) is the slowest so is for data archiving (if you choose not use glacier)

Question

In AWS, there are 5 types of EBS storage/disk Volumes you can attach to your EC2 instance: General Puporpose SSD (API code: gp2), Provisioned IOPS SSD (API code: io1), Throughput Optimized HDD (API code: st1), COLD HDD (API code: sc1), and [...] (API code: [...] )

Answer

Magnetic (API code: standard)

^^ General Purpose SSD (gp2), is for most workloads (is default)
^^^ Provisioned IOPS (input/outputs per second) SSDS (io1), is for read/write intensive workloads, e.g. databases
^^^^ Throughput optimized HDD (st1), is for big data and data warehousing, because magnetic HDD disks are for large data sizes but slow read/write
^^^^^ Cold HDD (sc1), is for things like File Servers (less read/writes), even slower than Throughput Optimized HDD
^^^^^^ Magnetic (standard) is the slowest so is for data archiving (if you choose not use glacier)

Question

In AWS, for EBS Volumes, [...] [...] [...] , is the default volume type used for most workloads

Answer

General Purpose SSD (API code: gp2)

Question

In AWS, you would attached EBS volume of type Provisioned IOPS (Input/Outputs Per Second) SSDS (API code: io1), to your EC2 instance if you are running a [...] on the EC2

Answer

Database

^^where you need fast read/writes

Question

In AWS, you would attached EBS volume of type Throughput Optimized HDD (API code: st1), to your EC2 instance if you are using the EC2 instance as a [...] [...]

Answer

Data Warehouse

^^because magnetic HDD disks are for large data sizes but slow read/write, but Throughput Optimized HDD is the fastest HDD type

Question

In AWS, you would attached EBS volume of type Cold HDD (API code: sc1) to your EC2 instance if you are using the EC2 instance as a [...] [...] for example

Answer

File Server

^^^ Becuase you get lots of storage with HDD but you have less read/writes for File Server so slowness of Cold HDD is ok (Throughput Optimized HDD woud be too agresive for this case)

Question

In AWS, you would choose EBS volume type of Magnetic (standard) to attached to your EC2 instance, if you were using your EC2 instance for [...] [...]

Answer

Data Archiving

^^ since Magnetic is the slowest volume type so is for data archiving (if you choose not use glacier) it is good, since it offers lots of storage space and you do not care about read/write speed