單項(xiàng)選擇題

According to the information presented in the following exhibit, can you tell me the reason that thetrust state of interface FastEthernet 0/3 displays "not trusted"?()

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


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1.單項(xiàng)選擇題Jitter is causing problems with the VOIP application in the network. What causes network jitter?()

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

2.多項(xiàng)選擇題VOIP is being implemented in the network and you need to assess the need for QoS. Which of thefollowing network problems would indicate a need to implement QoS features?()

A.Mis-routed packets
B.Excess jitter
C.Delay of critical traffic
D.Packet loss due to congestion
E.Data link layer broadcast storms
F.FTP connections unsuccessful

3.單項(xiàng)選擇題

Refer to the exhibit. What is the effect when the switchport priority extend cos 3 command isconfigured on the switch port interface connected to the IP phone?()

A.Effectively, the trust boundary has been moved to the PC attached to the IP phone
B.The computer is now establishing theCoS value and has effectively become the trust boundary
C.The IP phone is enabled to override with aCoS value of 3 the existing CoS marking of the PCattached to the IP phone
D.The switch will no longer tag incoming voice packets and will extend the trust boundary to thedistribution layer switch
E.RTP will be used to negotiate aCoS value based upon bandwidth utilization on the link

6.單項(xiàng)選擇題

Look at the graphic below, the connectivity between Cisco IP phone access port and theworkstation CK-PC has been established, how to manage the traffic?()

A.The IP phone access port will override the priority of the frames received from the CK-PC
B.The IP phone access port would trust the priority of the frames received from the CK-PC
C.The switch port FaO/4 would neglect the priority of the frames received from the CK-PC
D.The switch port FaO/4 would trust the priority for the frames received from the CK-PC

7.單項(xiàng)選擇題

An IP phone connects a user to a switch as shown below:

Based on the diagram shown above, which statement is true about the voice traffic coming to theswitch access port that is connected to the IP phone?()

A.A PC connected to a switch port via an IP phone is unaware of the presence of the phone
B.The traffic on the voice VLAN must be tagged with 802.1p encapsulation in order to coexist onthe same LAN segment with a PC
C.To improve the quality of the voice traffic, no other devices should be attached to the IP phone
D.The voice VLAN must be configured as a native VLAN on the switch
E.A PC connected to a switch port via an IP phone must support a trunking encapsulation

8.多項(xiàng)選擇題Which three statements are true about implementing wireless LANs in the network using Ciscodevices?()

A.Antenna power is a relative value reference to dBi
B.LWAPP allows encrypted communications between lightweight access points and WLANcontrollers.
C.Characteristics of antennas are directionality, gain, and polarization
D.Power over Ethernet (PoE) is only available when a WLAN controller is integrated into thenetwork
E.The WLAN solution Engine (WLSE) is used to control lightweight access points
F.One of the advantages of the lightweight WLAN solution is that the devices act indepently

10.單項(xiàng)選擇題On the wireless LAN, A client is searching for an access point (AP). What is the correct processorder that this client and access point goes through in order to create a connection?()

A.association request/response, probe request/response, authentication request/response
B.association request/response, authentication request/response, probe request/response
C.probe request/response, authentication request/response, association request/response
D.probe request/response, association request/response, authentication request/response
E.None of the other alternatives apply

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