40 IT -
?
IT - , , DevOPS, , , .

, . (, project/product IT) - .
, . .
: 35 IT - | , ?
- ?
- 7 OSI.
- IP - ?
- LAN?
- DHCP
- DNS?
- WAN?
- ""? ""?
- UTP?
- ?
- ?
- , ?
- 3 Cisco?
- VLAN ?
- PING?
- ?
- Ethernet?
- VPN?
- MAC - ?
- TCP UDP? ?
- NIC?
- ?
- ?
- NAT?
- MST (Multiple Spanning Tree)?
- RSTP (Rapid Spanning Tree) ?
- RIP ?
- EIGRP,
- , . BGP?
- , OSPF?
- VTP?
- SD WAN?
- MPLS?
- . ?
- . . ?
- FXS FXO ?
- - SIP PRI?
- RTP?
- SBC ?
- . SDP ?
?
. , (), , .
7 OSI.
. :
- (Physical)
- (Data Link)
- (Network)
- (Transport)
- (Session)
- (Presentation)
- (Application)
IP - ?
OSI. , IPv6 ( ).
LAN?
LAN (Local Area Network) - . , () .
, LAN WAN .
DHCP
DHCP (Dynamic Host Configuration Protocol). IP - . , DHCP , , DHCP .
DNS?
DNS - Domain Name System. . hh.ru, , DNS , IP - . .
DNS .
WAN?
WAN (Wide Area Network) - , - , . WAN - , .
""? ""?
, , . , , "" "".
UTP?
100 . .
?
(, ) OSI, IP - . , , .
?
( ) - , OSI. MAC - (, ).
, ?
OSI, , . , .
- "", , . , IT - , .
, , , ?
3 Cisco?
. (access layer), (distribution layer) (core layer).
VLAN ?
VLAN (Virtual Local Area Network), , . .
PING?
, "" ?". ICMP.
?
Ethernet?
Ethernet - , ( ). Ethernet, .
VPN?
VPN , , , , -
VPN .
MAC - ?
OSI. MAC -
TCP UDP? ?
OSI . TCP - - , UDP .
- TCP UDP
NIC?
NIC Network Interface Card. .
?
(proxy) - , (, , ), , .
?
DoS, DDoS, Bruteforce. "" , : (Backdoor), (Miner), (Bank, (Spyware), (Adware), (Rootkit).
NAT?
NAT IP - IP - IP - .
. NAT.
, ( , ). "" : .
, , .
MST (Multiple Spanning Tree)?
, . . MST .
. MST (Multiple Spanning Tree) .
RSTP (Rapid Spanning Tree) ?
. , STP "". . , RSTP.
RIP ?
RIPv1 RIPv2. , . - , , .
. RIPv1 RIPv2 . RIP .
EIGRP,
. EIGRP Cisco Systems. , Enhanced Interior Gateway Routing Protocol " ". EIGRP .
. , EIGRP. 7 EIGRP. , , EIGRP, - .
, . BGP?
BGP - . , , - , , , .
. 5 BGP .
, OSPF?
OSPF (Open Shortest Path First) - (Interior gateway protocol, IGP). , , RIP .
OSPF? :
VTP?
VLAN Trunking Protocol, , VLAN .
SD WAN?
Software Defined Wide Area Network , , , .
MPLS?
MPLS (Multiprotocol label switching) , , , MPLS (, IP-, , ).
. ?
3DES, Triple DES, AES. , , "" "".
. . ?
. , G.711 G.729. 711 64 /, 729 - 8 /.
FXS FXO ?
. FXS - . FXO - .
- SIP PRI?
SIP - , , ISDN PRI 20 . PRI , SIP .
SIP PRI .
RTP?
VoIP . SIP , RTP . , RTP .
SBC ?
. Session Border Controller ( ) - , VoIP, () , . SBC - , , ( ).
SBC .
. SDP ?
. SDP . IP - , .
SDP .
40 , , IT . - . , , , .
: , IT - .
:)