Final Study Flashcards
(32 cards)
Inter-VLAN routing:
What Three inter-LVAN routing options are there:
What are the three used for?
Legacy Inter-VLAN routing:
This is legacy and is no longer used in the industry
Router-On-A-Stick:
A solution from Small to medium-sized networks
Layer 3 - Switched Virtual interfaces (SVIs):
Most Scalable solution and is used in medium to large organizations
Inter-VLAN routing:
On router-on-a-stick. Fill in the blank
Ethernet interface is configured as an ____ ____ and connected to a ____ ____ on a layer 2 switch. Spacifically, the router interface is configured using __________ to identify routable VLANS.
802.1Q Trunk
trunk port
Subinterfaces
Inter-VLAN routing:
What is the disadvantage of layer 3 Switches
They are more expensive.
Inter-VLAN routing
How would you enter into a sub interface of a router
Interface G0/0/1.20
Inter-VLAN routing
Different types of switchport modes and what they do
Access:
For one single VLAN to be able to travers though the interface
Trunk
Allows for more then one VLAN to transfer though the connection
STP Concepts:
STP stands for?
what is the Purposes of STP?
Spanning Tree Protocol (STP)
Loop prevention
Redundancy:
eliminates a single point of failure but using multiple paths
STP Concepts:
What is the BID?
What two elements make up the BID
Priority Field = 32768 ( 2 Bytes )
Switch MAC Address = 0000.0000.1111 ( 6 Bytes )
BID = 32768.0000.0000.1111
BID = Switch Bridge ID
STP Concepts:
What is BPDU stand for?
and what is it used for?
Bridge Protocol Data Unit (BPDU)
BPDU is frame containing information about spanning tree protocol. that the switch use to determine root bridge configurations.
Hello BPDU is how switches share that information
STP Concepts:
What three bits of information are used to configure a none-loop network?
Root ID:
Is the Root Bridges ID
Root Path Cost:
Best path to the root bridge. (lower is better)
Bridge ID:
BPDU sender’s BID or the source bridge ID
STP Concepts:
What are the three different types of ports that can be assigned to a switch?
Designated Port:
All ports on the root bridge, as well as the destination of the Alternate Port
Root Port
Connection to the root bridge
Alternate Port
A port that is connected to the path that does not have the (lowers) BPDU configuration
EtherChannel:
Three different states of PAgP?
On:
This forces the interface to channel without PAgP
PAgP desirable:
Active negotiation state that the interface INITIATES Sending PAgP Packets
PAgP auto:
PASSIVE negotiation state that receives but does NOT INITIATE.
EtherChannel:
What advantages does EtherChannel provide?
Allows for Load Balancing
Creates an aggregation that is seen as on logical link
Redundancy over lapping links
EtherChannel:
Two different types of EtherChannels and what is different about them
PAgP:
PAgP is cisco proprietary
LACP:
is an Open standard supported by most vendors
EtherChannel:
Different port states of LACP
On
LACP active:
actively negotiating state
LACP passive:
Passively waits for packets from others.
EtherChannel:
True or False? PAgP and LACP are both Cisco-proprietary link aggregation protocols
False
EtherChannel:
Which combinations of these three make a EtherChannel link?
On
Desirable
Auto
On ————————– On
Desirable ——- Desirable
Auto ————– Desirable
Desirable ————– Auto
FHRP and HSRP:
What is the Primary Use of
FHRP and HSRP
redundancy
To stop when the default gateway is unreachable all LAN hosts losing outside LAN connectivity.
FHRP and HSRP:
Explain how
First hop redundancy protocol works
Multiple routers are configured to work together to present the illusion of a single router to the hosts on the LAN. By sharing an IP address and a MAC address, two or more routers can act as a single virtual router.
FHRP and HSRP:
Explain how
Hot Standby Router Protocol works
Multiple routers are configured together. one as the Active device and the others as the standby device. Active forwards the packets out of the network as the standby one monitors the status of the Active one and takes over when it fails.
FHRP and HSRP:
What are the Rules of HSRP election process?
IPv4 of the highest value is selected by default
Router with the Highest Priority will become the active router
By default the HSRP priority is 100
FHRP adn HSRP:
What are the 5 states of HSRP?
Initial Learn Listen Speak Standby
DHCPv4:
What are the 4 steps of obtaining a lease address?
- Discover - Client: I would like to request an address
- Offer - DHCP Server: Here is the address offer
- Request - Client: I accept the IP address offer
- Acknowledgment -DHCP Server: Your acceptance is acknowledged.
DHCPv4:
What are the 3 steps to configuring a router as a DHCP Server?
- Exclude IPv4 address.
[ ip dhcp excluded-address low addrees [high-address]]
Such as server printers static clients and routers and switches - Define the DHCPv4 pool name
[ip dhcp pool pool-name]
3. Configure the DHCPv4 address pool and default gateway [Network] [Default-router] [dns-server] [domain-name]
DHCPv4:
A client is trying to get a DHCP address but it isn’t on the same network as the DHCP server. What can they router do to solve this?
What commands would you use?
Configure DHCPv4 Relay on the router that would forward the Discovery packet from the client.
R1(config)# Interface [connected to clients]
R1(config-if)# ip helper-address [address of the DHCP server]
