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AWS SAA-C02 > ELB > Flashcards

ELB Flashcards

1
Q

ELB

A

Elastic Load Balancing
server that forwards traffic to multiple targets

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2
Q

Services integrated (3)

ELB

A

EC2
ECS
Lambda

ELB

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3
Q

Regional high availability

ELB

A

Supports using multiple AZs in a region

ELB

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4
Q

Horizontal scaling

ELB

A

Add EC2 instances to cover additional demand

ELB

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5
Q

availability purpose

ELB

A

spread load across multiple instances

ELB

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6
Q

public purpose

ELB

A

provide single point of access (e.g. one DNS entry)

ELB

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7
Q

availability purpose

ELB

A

seamlessly handle instance failures

ELB

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8
Q

target monitoring purpose

ELB

A

does health checks on instances

ELB

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9
Q

SSL purpose

ELB

A

provide SSL termination point

ELB

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10
Q

regional availability purpose

ELB

A

availability provided across multipl AZ

ELB

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11
Q

security purpose

ELB

A

separate public traffic from private traffic

ELB

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12
Q

maintenance benefit

ELB

A

managed and maintained by AWS

ELB

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13
Q

pricing benefit

ELB

A

costs less than 3rd party LBs

ELB

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14
Q

set up benefit

ELB

A

low effort needed to set up

ELB

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15
Q

Health check

ELB

A

allows ELB to know which instances can receive traffic

ELB

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16
Q

how instances are monitored

Health Check

A

a port and route is frequently checked

Health Check

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17
Q

healthy response

Health Check

A

200 (OK)

Health Check

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18
Q

ELB

LB security (2)

A
  • Open specific ports from Internet to LB
  • Restrict instances to only LB
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19
Q

sticky sessions

ELB

A

client is directed to same instance during time

ELB

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20
Q

purpose

sticky sessions

A

ensure that client doesn’t lose session data

sticky sessions

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21
Q

draw back

sticky sessions

A

may case load imbalances

sticky sessions

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22
Q

types of cookies (s)

sticky sessions

A
  • application
  • duration

sticky sessions

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23
Q

Application-based cookie (2)

sticky session cookies

A
  • assigned by LB
  • named AWSALBAPP

sticky session cookies

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24
Q

custom cookie

sticky session cookies

A

specified for individual target group

sticky session cookies

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25
duration-based cookie (2) | sticky session cookies
* generated by load balancer * name is AWSALB | sticky session cookies
26
cross-zone load balancing | ELB
ELB in one zone can LB to targets in multiple AZs | ELB
27
default setting for ALB | cross-zone load balancing
enabled | cross-zone load balancing
28
default setting for NLB and GWLB | cross-zone load balancing
disabled | cross-zone load balancing
29
SSL cert purpose | ELB
attached to LB to encrypt public traffic | ELB
30
cert sources (2) | ELB SSL
* ACM (AWS Certificate Manager) * upload cert you own | ELB SSL
31
HTTPS listener requirement | ELB SSL
default certificate | ELB SSL
32
HTTPS listener may have these | ELB SSL
multiple certs for securing multiple domains | ELB SSL
33
HTTPS listener security policy option | ELB SSL
may enable support for older versions of SSL/TSL | ELB SSL
34
SNI | ELB SSL
Server Name Indication allows one web server to load multiple certs | ELB SSL
35
SNI requirement | SNI
requires client to indicate target domain name in SSL handshake | SNI
36
SNI response | SNI
use correct cert for domain | SNI
37
deregistration delay | ELB
gives "in-flight" requests time to complete while instance is deregistereed | ELB
38
what ALB and NLB do when deregistering instance | deregistration delay
send all new requests to other instances | deregistration delay
39
time option | deregistration delay
0 (disabled) to 3600 seconds | deregistration delay
40
time default | deregistration delay
300 | deregistration delay
41
Elastic Load Balancing server that forwards traffic to multiple targets
ELB
42
EC2 ECS Lambda | ELB
Services integrated (3) | ELB
43
Supports using multiple AZs in a region | ELB
Regional high availability | ELB
44
Add EC2 instances to cover additional demand | ELB
Horizontal scaling | ELB
45
spread load across multiple instances | ELB
availability purpose | ELB
46
provide single point of access (e.g. one DNS entry) | ELB
public purpose | ELB
47
seamlessly handle instance failures | ELB
availability purpose | ELB
48
does health checks on instances | ELB
what target monitoring does | ELB
49
provide SSL termination point | ELB
SSL purpose | ELB
50
availability provided across multipl AZ | ELB
regional availability purpose | ELB
51
separate public traffic from private traffic | ELB
security purpose | ELB
52
managed and maintained by AWS | ELB
maintenance benefit | ELB
53
costs less than 3rd party LBs | ELB
pricing benefit | ELB
54
low effort needed to set up | ELB
set up benefit | ELB
55
allows ELB to know which instances can receive traffic | ELB
Health check | ELB
56
a port and route is frequently checked | Health Check
how instances are monitored | Health Check
57
200 (OK) | Health Check
healthy response | Health Check
58
* Open specific ports from Internet to LB * Restrict instances to only LB
# ELB LB security (2)
59
client is directed to same instance during time | ELB
sticky sessions | ELB
60
ensure that client doesn't lose session data | sticky sessions
use case | sticky sessions
61
may case load imbalances | sticky sessions
draw back | sticky sessions
62
* application * duration | sticky sessions
types of cookies (#) | sticky sessions
63
* assigned by LB * named AWSALBAPP | sticky session cookies
Application-based cookie (2) | sticky session cookies
64
specified for individual target group | sticky session cookies
custom cookie | sticky session cookies
65
* generated by load balancer * name is AWSALB | sticky session cookies
duration-based cookie (2) | sticky session cookies
66
ELB in one zone can LB to targets in multiple AZs | ELB
cross-zone load balancing | ELB
67
enabled | cross-zone load balancing
default setting for ALB | cross-zone load balancing
68
disabled | cross-zone load balancing
default setting for NLB and GWLB | cross-zone load balancing
69
attached to LB to encrypt public traffic | ELB
SSL cert location | ELB
70
* ACM (AWS Certificate Manager) * upload cert you own | ELB SSL
cert sources (2) | ELB SSL
71
default certificate | ELB SSL
HTTPS listener requirement | ELB SSL
72
list of certs for securing multiple domains | ELB SSL
HTTPS listener option | ELB SSL
73
may enable support for older versions of SSL/TSL | ELB SSL
HTTPS listener security policy option | ELB SSL
74
Server Name Indication allows one web server to load multiple certs | ELB SSL
SNI | ELB SSL
75
requires client to indicate target domain name in SSL handshake | SNI
SNI requirement | SNI
76
use correct cert for domain | SNI
SNI response | SNI
77
gives "in-flight" requests time to complete while instance is deregistereed | ELB
deregistration delay | ELB
78
send all new requests to other instances | deregistration delay
what ALB and NLB do when deregistering instance | deregistration delay
79
0 (disabled) to 3600 seconds | deregistration delay
time option | deregistration delay
80
300 | deregistration delay
time default | deregistration delay

AWS SAA-C02 (48 decks)

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