Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
Where do Mac address are burnt on |
The NIC ( Network interface Card) |
|
|
What is the role of ARP(adress resolution protocol) |
To match destination IP address with destiny MAC address . |
|
|
What layer does ARP use to communicate with hosts once it get their MAC address? |
Layer 2 link protocol |
|
|
What is ARP Cache? |
Is a MAC to IP mapping saved by ARP for future reference of both sending & receiving host. |
|
|
What is Revserse ARP ? |
When host knows the mac address but do not know the IP and is requesting to know it. |
|
|
What is the name of messages used by ICMP to check reachability of end-to-end hosts? |
*ICMP-echo * ICMP-echo-reply |
|
|
What network protocol provide "best- efforts-delivery mechanism? |
Internet Version 4 protocol (IPV4) |
|
|
What is the range address of APIPA? |
169.254.0.1-169.254.255.254, |
|
|
What kind of issue you may have if your ip address is a APIPA ip address |
DHCP server, Network connectivity |
|
|
What does FHRP(first hop redundancy protocol)? |
designed to provide redundancy to the gateway router within the organization’s network by the use of a virtual IP address and virtual MAC address. |
|
|
What are the steps of implementing FHRP? |
* two routers needed * Use virtual IP & virtual mac address on both routers * Set virtual IP as gateway on all devices * Set on router as active the other on standby.
|
|
|
What are the three way to implement FHRP? |
*Hot Standby Router Protocol (HSRP) Fail over protocol, active & standby state, cisco proprietary *Virtual Router Redundancy Protocol (VRRP) Vendor neutral, preemption is enabled by default not on HSRP ( State: Master router, Backup router) *Gateway Load Balancing Protocol (GLBP) do load balancing, active and standby state |
|
|
What is APIPA used for? |
enables computers to automatically self-configure an IP address and subnet mask when their DHCP server isn’t reachable. |
|
|
What kind of devices connected to a network you can CDP information for? |
Directly connected because CDP do not foward frames. |
|
|
How is CDP messages distributed? |
Multicast |
|
|
What protocol CDP uses |
SNAP ( subnetwork access protocol) |
|
|
CDP messages are generated every ? |
60 seconds |
|
|
What is the hold down time for missing neighbors in CDP? |
180 seconds |
