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折扣号考试32007-09-30 10:43:00

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Take Assessment - Voucher Exam - CCNA 4 WAN Technologies (Version 3.1)

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31
Which networking device performs path determination?
a hub
a switch
a router
a bridge

32
Which list contains only routed protocols?
AppleTalk, IP, EIGRP
IP, AppleTalk, IPX
IP, RIP, IPX
IPX, OSPF, EIGRP

33
Which statement is true regarding routing metrics?
All routing protocols use the same metrics.
EIGRP uses bandwidth as its only metric.
Routers compare metrics to determine the best route.
The larger metric generally represents the better path.

34
Which statement describes the store and forward transmission mode of an Ethernet switch?
It is also referred to as a hybrid mode or as error sensing mode.
It requires the switch to read the first 64 bytes of an Ethernet frame and then begins to forward the data.
It decreases the latency of the transmission but has very little error detection.
It increases latency with large frames, but error detection is high.

35
Which statements about VLANs are true? (Choose three.)
VLANs are restricted to a physical segment.
They are logical groupings of devices.
User hosts can be grouped by function.
VLANs are configured by software.
VLANs are standardized.

36
Which statement is correct concerning routing and routed protocols?
A routed protocol allows the routers to communicate with other routers and maintain tables for a routing protocol.
A routing protocol allows routers to communicate with other routers and maintain tables for a routed protocol.
Routers only need to use routing protocols to work properly.
There is no difference between routed and routing protocols.

37
Which command will display statistics for all interfaces configured on a router?
list interfaces
show interfaces
show processes
show statistics

38
Which type of handshaking occurs when using CHAP?
one-way
two-way
three-way
four-way

39
Which statements describe the use of Link State Advertisements (LSA)? (Choose two.)
LSAs are generated when changes in the network occur.
Link state advertisements are refreshed every 60 minutes.
The router copies the information received from each LSA packet into the routing table.
Routers exchange LSAs to build and maintain topology databases.
Forwarding LSAs can increase the occurrence of routing loops.

40
Which of the following are benefits of creating a subnetwork structure in an IP network? (Choose three.)
permits network address duplication
allows for address flexibility
prevents address replication
provides broadcast containment
adds low-level security
allows for more network hosts available

41
What determines how much data a sending station running TCP/IP can transmit before it must receive an acknowledgment?
segment size
transmission rate
bandwidth
window size
sequence number

42
An administrator has an older 1900 switch located on the edge of the network. What can the network administrator do to ensure that it does not become the root bridge of the spanning-tree network?
decrease the BPDU hello timer update on the 1900
assign the highest IP address to the switch that should be the root
assign the lowest IP address to new root bridge
assign the lowest priority to the switch that should be the root
assign the highest priority to the new root bridge
decrease the BID on the 1900 switch

43
What is the purpose of typing o/r 0x2142 during a password recovery procedure on a 2500 series router?
to restart the router
to bypass the configuration in NVRAM
to view the lost password
to save the changes to the configuration
to enter ROM Monitor mode

44
Which of the following are true concerning distance vector and link state routing protocols? (Choose 2.)
Distance vector protocols send the entire routing table to directly connected neighbors.
Link state protocols send the entire routing table to all routers in the network.
Distance vector protocols send updates about directly connected neighbors to all networks listed in the routing table.
Link state protocols send updates containing the state of their own links to all other routers on the network.

45
What does the ISDN BRI provide?
23 B channels and one 64 kbps D channel
total bit rate up to 1.536 Mbps
two 56 kbps B channels and one 64 kbps D channel
two 64 kbps B channels and one 16 kbps D channel
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