單項(xiàng)選擇題

VOIP is being implemented on the Company network. In a properly designed network, 
what is the  maximum amount of time a voice package should spend crossing a network?  ()

A.90 milliseconds
B.120 milliseconds
C.150 milliseconds
D.240 milliseconds


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1.單項(xiàng)選擇題

Jitter is causing problems with the VOIP application in the Company network. 
What causes  network jitter?()

A.Variable queue delays
B.Packet drops
C.Transmitting too many small packets
D.Compression

2.單項(xiàng)選擇題

Refer to the exhibit. A trunk link is connected between switch A_SW and switch D_SW. Based on  the configuration shown in the exhibit, 
how would the traffic coming from the switch A_SW be  managed? ()

A.The trunk port Fa0/1 on switch A_SW will trust allCoS values on the frames coming from the IP  phone.
B.The trunk port Fa0/1 on switch A_SW will trust allCoS values on the frames received on the IP  phone.
C.The trunk port Fa0/1 on switch D_SW will trust allCoS values on the frames coming from port  Fa0/1 on A_SW.
D.The trunk port Fa0/1 on switch D_SW will trust allCoS values on the frames received on the  A_SW switch port Fa0/4.
E.The trunk port Fa0/1 on switch D_SW will trust allCoS values on the frames received on the IP  phone port.

3.單項(xiàng)選擇題

Refer to the exhibit. 
Which statement is true when voice traffic is forwarded on the same VLAN  used by the data traffic? ()

A.The voice traffic cannot be forwarded to the distribution layer.
B.The voice traffic cannot use 802.1p priority tagging.
C.Port security cannot be enabled on the switch that is attached to the IP phone.
D.Quality of service cannot be applied for the voice traffic.

4.單項(xiàng)選擇題

Refer to the exhibit.
 Why does the trust state of interface FastEthernet 0/3 show "not trusted"?  ()

A.DSCP map needs to be configured for VOIP.
B.ToS has not been configured.
C.ToS has been misconfigured.
D.The command mls qos needs to be turned on in global configuration mode.
E.There is not a Cisco Phone attached to the interface.

5.單項(xiàng)選擇題

Refer to the exhibit.
 What statement is true about the configuration on switch CAT1?()

A.The configuration establishes policed DSCP on ports Fa0/11 and Fa0/12 with values ranging  from 8 to 56.
B.The configuration overrides 802.1p priorities on packets entering ports Fa0/11 and Fa0/12 with  a value of 48.
C.Untagged Port VLAN ID (PVID) frames will carry voice traffic on VLAN 40.
D.Two IP phones with the MAC addresses of 0008.8595.d1a7 and 0007.8595.d2b7 are  connected to CAT1 ports Fa0/11 and Fa0/12, respectively.
E.Security violation shutdown mode has been activated for ports Fa0/11 and Fa0/12.
F.The configuration overrides the Quality of Service value in packets entering ports Fa0/11 and  Fa0/12 with a value of 45.

7.多項(xiàng)選擇題

Refer to the exhibit. 
Which three statements are true about trust boundaries in the campus  network?()

A.Classification and markingoccur using 802.1ab QoS bits before reaching the trust boundary.  
B.A device is trusted if it correctly declassifies packets. 
C.A device is trusted if it correctly classifies packets.
D.Network trust boundaries are automatically configured in IOS version 12.3 and later.  
E.The outermost trusted devices represent the trust boundary.
F.For scalability, classification should be done as close to the edge as possible.

8.多項(xiàng)選擇題

Refer to the exhibit. 
Which two statements are true about the required switch configurations to  support a voice VLAN?()

A.CDP must be disabled on the switch port to prevent interference between CDP messages and  voice traffic.
B.Port security cannot be configured on a port that is configured for a voice vlan.
C.Static secure MAC addresses should be configured on voice vlan ports to prevent access by  devices other than IP phones.
D.CDP must be enabled on the switch port to allow configuration information to be passed to the  IP phone.
E.Portfast must be enabled on the switch port.
F.802.1x authentication cannot be configured on a port configured for a voice vlan.

9.單項(xiàng)選擇題

You have been tasked with setting a trust boundary on the Company network.
 What is the basic  function of this trust boundary?()

A. Trust boundaries are points in the network where Layer 2 CoS markings are converted to Layer  3 DSCP or IP precedence markings.
B. Trust boundaries are a point in the network where QoS functionality begins and ends.
C. Trust boundaries determine whether certain types of traffic can pass.
D. Trust boundaries are a point in the network where decisions about CoS markings on incoming  packets are made.
E. None of the other alternatives apply

10.單項(xiàng)選擇題

Refer to the exhibit. On basis of the configuration that is provided,
 where will the trust boundary be  established in this network? ()

A.at the PC
B.at the access switch
C.at the IP phone
D.at the distribution switch

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Which router redundancy protocol cannot be configured for interface tracking?()

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Refer to the exhibit. Initially, LinkA is connected and forwarding traffic. A new LinkB is then attached between SwitchA and HubA. Which two statements are true about the possible result of attaching the second link?()

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DS2 has not become the active device for Vlan103’s HSRP group even though all interfaces are active. As related to Vlan103’s HSRP group. What can be done to make the group function properly ? ()

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Which three statements about STP timers are true?()

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During routine maintenance, G1/0/1 on DS1 was shutdown. All other interface were up. DS2 became the active HSRP device for Vlan101 as desired. However, after G1/0/1 on DS1 was reactivated. DS1 did not become the active HSRP device as desired. What need to be done to make the group for Vlan101 function properly ? ()

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Refer to the exhibit. What will happen when one more user is connected to interface FastEthernet 5/1? ()

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Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command, which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true?()

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How are STP timers and state transitions affected when a topology change occurs in an STP environment?()

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Refer to the exhibit. For what purpose is the command show ip cef used?()

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