Test your knowledge of ARP, Proxy ARP, administrative distance, and other vital Cisco exam topics with these free questions!
CCNA And CCENT Certification Exam:
Host A wants to send data to Host B. Host A knows Host B’s IP address, but not its MAC address. There are two switches and a hub between the two hosts. What [...]
Cisco Certified Network Professional (CCNP) certifies comprehension and expertise require installing, configuring and troubleshooting converged local and wide area networks with 100 to 500 or more nodes. (CCNP) Prerequisite is Cisco Certified Network Associate (CCNA). With these two certifications in your resume you are well on your way to become master in networking.
If you wish [...]
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Pass4sure 642-825 contains all the knowledge points required in the Cisco Certification 642-825 Exam. It will be updated in time according [...]
Cisco 642-892 Certification Exam plays an important role on your way to get the 642-892.
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CCNP 642-901 BSCI
Examination Time: 75 minutes (Non-English speaking countries to increase 30 minutes)
Pass-mark: 703 minutes
CCNP 642-901 test
Routing Principles
List the key information routers need to route data
Describe classful and classless routing protocols
Compare distance vector and link-state protocol operation
Describe the use of the fields in a routing table
Analyze a routing table, [...]
I, About certification:
New CCNP courses update the new the current network which be widely used by industry routing, switching, long-range technology, has been canceled out of date or no one has the relevant content, an increase of network security, voice, network operators and service The general technical support. Make updated CCNP curriculum more practical, more [...]
switch (config) # service timestamps debug datetime msec
switch (config) # service timetamps log datetime msec
More than two and debug command to log onto the time-stamp marking. Oh, the log records when useful, you can see when other people use the router. Msec accuracy is back to the second meaning
local vlan: there is only one vlan [...]
switch>(enable) set spantree backbonefast
Commands to Use for Troubleshooting The Configuration：
show spantree vlan_id - Shows the current state of the spanning tree for the ”vlan_id” entered from the perspective of the switch on which it is entered.
show spantree summary - Provides a summary of connected spanning tree ports by VLAN.
show spantree statistics [...]
I. STP introduce
Spanning-Tree Protocol (STP) is a Layer 2 (L2) protocol designed to run on bridges and switches. The specification for STP is called 802.1d. The main purpose of STP is to ensure that you do not run into a loop situation when you have redundant paths in your network. Loops are deadly to [...]
