CISCO EXAM 6 FINAL Q2 Flashcards
LLA
Local Link Address
FF80::
ULA
Unique Local Address
FC00-FDFF
Legacy Classful Addressing
128, 223, 239, 255
How do you dynamically assign a GUA?
GUA: Global Unicast Address, IP address for ipv6.
RS: Hosts ask router for address
RA: Router gives host address
What is EUI-64
Creates LLA by adding bits to MAC
Types of IPv6 multicast addresses?
Well known
Solicited
What is the all nodes multicast address?
FF01::01
What is the all routers multicast address?
FF02::2
What is ICMP and ICMP messages?
ICMP gives feedback about packet transmissions.
RS,RA,NS,NA
NS and NA are like RS and RA but check for DAD (Duplicate Address Detection)
TCP Application Protocols
FTP, HTTP, SMTP, SSH
UDP Application Protocols
DHCP, DNS, SNTP, TFTP, VoIP
Application Layer Application Protocols
HTTP, DNS, SMTP, POP, DHCP
Presentation Layer Protocols
MPEG, JPEG, GIF
Session Layer Protocols
SIP, SCP, SMB, RPE
Packet Tracer network security commands
netstat: Lists protocols
Nslookup: Shows default DNS server
Autosecure: Secures Router
Create/End TCP connection
create: syn,ack,syn,ack
terminate: fin,ack,fin,ack
How does DHCP dynamically assign ipv6 addresses?
SLAAC: Router has all
Stateless: Router has some and Server has some
Stateful: Router only has default gateway
Port Zones
Well Known: <1k
Registered: <49k
Private/Dynamic: <65k
Common Port Numbers
FTP: 20-21
SSH ~ 22
Telnet ~ 23
HTTP ~ 80
SMTP ~ 25
What are the DNS Message formats?
A ~ IPv4 end device
AAAA ~ IPv6 end device
NS ~ Name Server
MX ~ Mail Exchange
DHCP requesting process
discover ~ Host looks for server
offer ~ Server offers service
request ~ Hosts requests
pack ~ Server accepts host will use new info
HTTP message types
get ~ Client requests from website
post ~ Website uploads data
put ~ Website uploads content
How to prevent network attacks
IPS ~ Monitors traffic
ESA/WSA ~ Filters emails and websites
AAA Server ~ Database of access rights
Firewall
VPN
SMTP
Sends email
