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Daniel Bulant
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5 changed files with 97 additions and 4 deletions
1
notes/.obsidian/core-plugins.json
vendored
1
notes/.obsidian/core-plugins.json
vendored
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@ -11,6 +11,5 @@
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"command-palette",
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"markdown-importer",
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"word-count",
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"open-with-default-app",
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"file-recovery"
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]
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@ -12,8 +12,8 @@
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"checkpointList": [
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{
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"path": "/",
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"date": "2022-07-11",
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"size": 880894
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"date": "2022-07-14",
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"size": 886563
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}
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],
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"activityHistory": [
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@ -747,6 +747,14 @@
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{
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"date": "2022-07-11",
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"value": 2729
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},
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{
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"date": "2022-07-13",
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"value": 0
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},
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{
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"date": "2022-07-14",
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"value": 5721
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}
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]
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}
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85
notes/psi/CCNA1 Final PTSA.md
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85
notes/psi/CCNA1 Final PTSA.md
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# CCNA1 Final PTSA
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`192.168.10.0/24`
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- subnet A - 100
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- subnet B - 50
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| Spec | A | B |
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| --------------------------------- | ------------------------------------- | ------------------------------------- |
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| Number of bits in the subnet | 25 | 26 |
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| ip mask | `11111111.11111111.11111111.10000000` | `11111111.11111111.11111111.11000000` |
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| new ip mask | 255.255.255.128 | 255.255.255.192 |
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| max number of usable subnets | 32 | 16 |
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| number of usable hosts per subnet | 126 | 62 |
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| ip subnet | `192.168.10.0/25` | `192.168.10.128/26` |
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| first | `192.168.10.1` | `192.168.10.129` |
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| last | `192.168.10.126` | `192.168.10.190` |
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| description | a | b |
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| ------------------- | ---------------- | ---------------- |
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| first | `192.168.10.1` | `192.168.10.129` |
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| last | `192.168.10.127` | `192.168.10.190` |
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| max number of hosts | `124` | `61` |
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| device | ipa | subnet mask | gateway | points |
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| --------- | ---------------- | ----------------- | -------------- | ------ |
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| PC-A | `192.168.10.126` | `255.255.255.128` | `192.168.10.1` | 2pts |
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| R1-G0/0/0 | `192.168.10.1` | `255.255.255.128` | NA | 2pts |
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| R1-G0/0/1 | `192.168.10.129` | `255.255.255.192` | NA | 2pts |
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| S1 | `192.168.10.2` | `255.255.255.128` | `192.168.10.1` | 2pts |
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| PC-B | `192.168.10.190` | `255.255.255.192` | `192.168.10.129` | 2pts |
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| assigned to interface | ipv6 subnet | prefix |
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| --------------------- | ---------------------- | ------- |
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| R1-G0/0/0 | `2001:db8:acad:1::/64` | `64` |
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| R1-G0/0/1 | `2001:db8:acad:2::/64` | `64` |
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| Device | ipv6a | prefix | gateway | points |
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| --------- | -------------------- | ------ | -------------------- | ------ |
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| R1-G0/0/0 | `2001:db8:acad:1::1` | `64` | NA | 3pts |
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| R1-G0/0/1 | `2001:db8:acad:2::1` | `64` | NA | 3pts |
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| S1 | `2001:db8:acad:1::2` | `64` | `2001:db8:acad:1::1` | 4pts |
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## PC-A
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| key | value |
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| ------------- | ------------------ |
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| physical addr | 00E0.F7DA.3542 |
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| ipv4 addr | 192.168.10.126 |
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| subnet mask | 255.255.255.128 |
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| ipv4 def gate | 192.168.10.1 |
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| ipv6 addr | 2001:db8:acad:1::3 |
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| ipv6 def gate | 2001:db8:acad:1::1 |
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## PC-B
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| key | value |
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| ------------- | --------------- |
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| desc | something |
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| physical addr | 000c.8588.a780 |
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| ipv4 addr | 192.168.10.190 |
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| subnet mask | 255.255.255.192 |
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| ipv4 def gate | 192.168.10.129 |
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| ipv6 addr | 2001:db8:acad:2::2 |
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## R1
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| Desc | value |
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| ---------------- | --------- |
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| router | 1941 |
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| IOS image | 15.1(4)M4 |
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| total RAM | 262136 |
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| total memory | 255744000 |
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| conf register | 0x2102 |
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| cli command used | `show version` |
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### Commands
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| Desc | Command |
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| ----------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------- |
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| Display a summary of important information about the ipv4 interfaces | `show ip interface` |
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| display the ipv4 routing table | `show ip route` |
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| display the layer 2 to layer 3 mapping of addresses | `show mac-address-table` |
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| display detailed ipv4 info on g0/0/0 | `show ip interface gig 0/0/0` |
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| display the ipv6 routing table | `show ipv6 route` |
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| display a summary of ipv6 interface addresses and status | `show ipv6 interface` |
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| display information about the devices connected to R1. Info should include Device ID, local interface, hold time, capability, platform, port Id | `show cdp neighbors` |
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| Save the current configuration so it will be used the next time the router is started. | `copy running-config startup-config` |
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@ -21,7 +21,7 @@ Módy:
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`(config)# service password-encryption` zapne šifrování hesel
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`(config)# banner motd XYYX` X znak odděluje zprávu (nesmí se objevit jinde ve zprávě), YY je banner co se bude zobrazovat
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`(config)# login block-for 120 attempts 2 within 30` fail2ban
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`(config)# no ipdomain-lookup` vypne DNS lookup v user mode (ctrl+shift+6 zruší)
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`(config)# no ip domain-lookup` vypne DNS lookup v user mode (ctrl+shift+6 zruší)
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`(config)# security passwords min-length 10` nastaví minimální délku hesla
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`(config)# exit`
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`# copy running-config startup-config` uložení (running-config v paměti, startup-config)
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@ -8,6 +8,7 @@ imagePrefix: 'data/'
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```
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%% Zoottelkeeper: Beginning of the autogenerated index file list %%
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- [[psi/Adresace|Adresace]]
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- [[psi/CCNA1 Final PTSA|CCNA1 Final PTSA]]
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- [[psi/Data Center Tier|Data Center Tier]]
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- [[psi/IPv6|IPv6]]
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- [[psi/Sítě|Sítě]]
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