Polygon examination

Содержание и основные понятия

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Alterna · Chapter 6 · page 6.4
Polygon examination
Check protocol, DNS, and web technology knowledge.
Chapter 6
EEG · task 13
- Network technology: protocols, DNS, web. Here you will secure everything you have studied.
75 jobs at the bank: 25 by protocol, 25 by DNS, 25 via web. 15 randoms are selected for each visit.
EEG · task 13
01
Conformity map
What's the subject of the EGE mission?
Subject
Page
EGE mission
What's being tested
Network protocols
6.1
EEG 13
TCP/UDP, HTTP, FTP, SMTP, SSH, ports
DNS
6.2
EEG 13
Types of records, hierarchy, resolution, Cash
Web technology
6.3
EEG 13
TML/CSS/JS, Frontend/backend, API, servers
IP addresses (from Chapter 5)
5.1
EEG 13
IPv4, IPv6, classes, private/public
Subnet masks (from g5)
5.2
EEG 13
CIDR, beaten and, subnet calculation
Security (from chap. 5)
5.4
EEG 13
Firewall, VPN, TLS, IDS/IPS
02
Quest: network engineer
8 situations — Choose the right action · earn an XP
EEG 13
XP: 0 / 80
03
Test
15 random jobs from the bank 75 · 25 protocols + 25 DNS + 25 web
EEG 13
📝
EEG test 13
Bank 75 assignments · random 15
Examination
0 / 15
Error
Could not download the tasks.
04
Open task
Case: analysis, diagnostics, decision
EEG 13 · Open Response
♪ Case: "The site doesn't open"
User complains: input
www.company.ru
browser shows
ERR_NAME_NOT_RESOLVED
. However,
company.ru
(without www) open normally. Ping to server
93.189.45.12
Other sites are working.
Evaluation criteria (4 points)
1 points - Analysis:
The problem with the DNS record for the subdomain www.CNAME or A-record for www.company.ru is missing or incorrect.
1 - Diagnostics:
Check DNS:
nslookup www.company.ru
and
nslookup company.ru
Comparison of results: Check the DNS area to see if there is a record at www.
1 points — Decision:
Add DNS recording: A-record
www → 93.189.45.12
or CNAME
www → company.ru
Wait for the update (TTL).
1 point - Prevention:
DNS records monitoring, automatic subdomain accessibility tests, DNS zone documentation.
→
What's next?
The next chapter is parallel computing and supercomputers.
Chapter 6 completed the block
Network technology
III. Next — Chapter 7:
⚡
Multiprocessor systems
EEG 22
Parallel computations, multi-nuclear processors, flow synchronisation.
🖥️
Supercomputers
EEG 22
Clusters, GRID, cloud computing, TOP500, quantum computers.