What does the Spanning Tree Algorithm (STA) do?
A.) Restore lost frames
B.) Builds routing tables for routing through an internetwork
C.) Forward packets through a switch
D.) STA is implemented by STP to prevent loops
Answer / guest
Answer: D
IEEE 8021.d Spanning Tree Protocol (STP) was developed to
prevent
routing loops in a network. If a router, switch, or hub has
more then
one path to the same destination, a routing problem could
occur. To
prevent this, the Spanning Tree Protocol is executed between
the devices
to detect and logically block redundant paths from the
network. The main
function of the Spanning Tree Protocol is to allow redundant
network
paths without suffering the effects of loops in the network.
The Spanning Tree Algorithm (STA) implemented by STP
prevents loops by
calculating a stable Spanning Tree network topology. When
creating fault
tolerant internetworks, a loop-free path must exist between
all Ethernet
nodes in the network. Spanning Tree frames called Bridge
Protocol Data
Units (BPDUs) are sent and received by all switches in the
network at
regular intervals.
| Is This Answer Correct ? | 1 Yes | 1 No |
Identify 3 characteristics of switches? A.) Increase available bandwidth B.) Decrease broadcast traffic C.) Support full duplex in a multipoint topology D.) Make fowarding decision using MAC address E.) Create collision domains
What are the 2 functions of the Data Link Mac layer? A.) Handles access to shared media B.) Manages protocol access to the physical network medium C.) Provides SAPs for higher level protocols D.) Allows multiple devices to uniquely identify one another on the data link layer
Which command displays access list 111? A. show access-list 111 B. show ip access-list 111 C. display ip access-list 111 D. display access-list 111 details
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Which three basic switch functions increase available bandwidth on the networks? (Choose three) A. loop avoidance B. address learning C. hop count limiting D. broadcast filtering E. packet forward/filtering F. broadcast packet hop count learning/forward/filtering
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What is EIGRP?
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As a system administrator, you perform an extended ping at the privileged EXEC prompt. As part of the display, you see "Set DF bit in IP header? [yes] :" What would happen if you answered no at the prompt. A. This lets the router fragment the packet. B. It tells the router not to fragment the packet. C. This lets the router direct the packet to the destination it finds in its routing table. D. It tell the router to send the packet to the next hop router.