It-grabbarna CCNA1
explain steps in the three-way hanshake in the tcp
synchronization ---> synchronization acknowledgement ---> acknowledgement
vad är huvud anledningen till att man subnätta ipv6
för att supporta hieraltical network design
vad gör "sliding windows "i TCP
request the the source decrease the rate of the date that is being sent
what is link-local
address type thar is automatically assigned to an network when ipv6 is enabled
vilka portar kllas för "well-known"
0-1023
vilka portar kallas för "registered"
1024-49151
vilka portar kallas för "Dynamik/privat"
49152-65535
list two application or server or a application protocol that use UDP
DHCP(67/68) and DNS(53)
when shoul trafic be analyzed to get the best patern
during peak utilization times
broadcast
en till alla
multicast
en till flera
unicast
en till en
when is it necessary to use ip address and default gateway on a router
when a router need to reach multiple vlans or reach off-subnet
what type of melicious attack dont need humman action to spread
worm
what type of melicious attack that need humman interaction to spread
virus
what type of melicious attack descase it self ass a legit program but it have bad intentions
Trojan horse
what is FTP used for
file transfer protocol (FTP(21))is used to transfer files between device in the network
what dose the command"copy running-config tftp" do
saves the running configuration to the tftp-server
name 2 sublayer of the data-link layer
LLC and MAC
what layer is responsible is responsible if the signal generated by the NIC are distorted or/and no usable
the physical layer
namn alla lager på osi modeler med deras pdu
*Application (Data)
*presentation (Data)
*session (Data)
*transport (om de är TCP= segment/ om der UDP= datagram)
*network (packet)
*Data-link (frame)
*physical (bits)
whish layers are merged together to from the osi to make the network-accses layer in the TCP/IP model
physical and the data link
what mode are you "R>"
User exec mode
what mode are you "R#"
Privileged exec mode
what mode are you "R(config)#"
global config mode
what mode are you "R(config-line)#"
line config mode
what dose "!" int the responses when i ping mean
ICMP successful ping
what dose "." int the responses when i ping mean
ICMP found a way to the destination but dodnt get a response
what is multiplexing
sending smaller pieces from many different conversation on the same network segments
what dose "U" int the responses when i ping mean
the ICMP couldn't find a path, U= unreachable
vilken port har SSH
22
vilken port har Telenet
23
vilken port har DNS
53
vilken port har DHCP
67/68
vilken port har HTTP
80
what Attack is it when someone is trying to overwhelm wan link to destination
Dineal of service (DoS)
What is CDP
is the protocol used to find info about direct connected cisco devices
hur ser socket psair utt
ip add : port nr,
till exempel: 192.168.1.0:21
21 är port nr för FTP
what two different topology is there
physical (what physical rum it is in, where it is located Geographisk)
and
logical(ip add, what subnet it is in)