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What was the key reason the International Organization for
Standardization released the OSI model?
A. users could access network servers faster
B. different vendor networks could work with each other
C. the industry could create a standard for how computers work
D. network administrators could increase the overall speed
of their network
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What are hold-downs used for? A.) To prevent regular update messages from reinstating a route that has come back up B.) Information received on an interface cannot be sent back out the same interface C.) To prevent regular update messages from reinstating a route that has gone down D.) To hold the routing table from being sent to another router
Identify the command to display the status of the Frame Relay virtual circuit? A.) Router# show frame-relay virtual-circuit B.) Router(config)# show frame-relay pvc C.) Router# show frame-relay pvc D.) Router# show virtual
Can you explain the broader steps of how L2F establishes the tunnel?
Can you define LAC
Identify 3 characteristics regarding CDP? A.) On by default B.) Shows only directly connected neighbors C.) Requires IP or IPX D.) 60 second update interval by default E.) 30 second updates interval by default
You have two Cisco routers setup back-to-back in a lab using DTE/DCE cables. To which router would you add the clockrate command? A.) The serial port on the DCE router B.) The Ethernet port on the DTE router C.) The Ethernet port on the DCE router D.) The serial port on the DTE router
what is farme realy.and on which layer it work
Which of the following is a layer 2 device? A.) Switch B.) Bridge C.) Repeater D.) Hub
Identify the 2 characteristics that TCP and UDP share in common? A.) Both use port numbers to identify upper level applications B.) Operate at the Network layer C.) Both are Transport protocols D.) Both are reliable communications
Identify the IPX standard access-list number range? A.) 600 - 699 B.) 1000 - 1099 C.) 1 - 99 D.) 100 - 199 E.) 800 - 899
How are straight and crossable cables different from each other?
Which layer manages protocol access to the Network layer? A.) Datalink - MAC Sublayer B.) Datalink - LLC Sublayer C.) Transport D.) Session E.) Network
CCNA 
