單項(xiàng)選擇題

Study the following graphic carefully Host1 and Host2, which belong to different VLANs, are in thesame subnet. According to the information displayed, which description is correct when trying toping from host to host?()

A.A trunk port should be configured on the link between CK-SW1 and CK-SW2 to pingsuccessfully
B.The two hosts should be in the same VLAN in order to ping successfully
C.A Layer 3 device is a must in order for the ping command to be successful
D.The ping command will be successful without any further configuration changes


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1.單項(xiàng)選擇題

Refer to the exhibit. VLAN2, VLAN3, and VLAN10 are configured on the switch D-SW1.Host computers are on VLAN 2 (10.1.2.0), servers are on VLAN 3 (10.1.3.0), and the
management VLAN is on VLAN10 (10.1.10.0). Hosts are able to ping each other but are unable toreach the servers. On the basis of the exhibited output, which configuration solution could rectifythe problem?()

A.Enable IP routing on the switch D-SW1
B.Configure a default route that points toward network 200.1.1.0/24
C.Assign an IP address of 10.1.3.1/24 to VLAN3
D.Configure default gateways to IP address 10.1.2.1 on each host
E.Configure default gateways to IP address 10.1.10.1 on each host
F.Configure default gateways to IP address 200.1.1.2 on each host

2.單項(xiàng)選擇題

Refer to the exhibit. Host A and Host B are connected to the Catalyst 3550 switch and have beenassigned to their respective VLANs. The rest of the 3550 configuration is the default configuration.Host A is able to ping its default gateway, 10.10.10.1, but is unable to ping Host B. Given theoutput displayed in the exhibit, which statement is true?()

A.HSRP must be configured on SW1
B.A separate router is required to support interVLAN routing
C.Interface VLAN 10 must be configured on the SW1 switch
D.The global config command ip routing must be configured on the SW1 switch
E.VLANs 10 and 15 must be created in the VLAN database mode
F.VTP must be configured to support interVLAN routing

3.多項(xiàng)選擇題You work as a network technician. Your boss is interested in the QoS technology in the context ofvideo traffic. What can be said of application of this technology in this type of network?()

A.The access layer is the initial point at which traffic enters the network. Traffic is marked (orremarked) at Layers 2 and 3 by the access switch as it enters the network, or is "trusted" that it isentering the network with the appropriate tag
B.No traffic marking occurs at the core layer. Layer 2/3 QoS tags are trusted from distributionlayer switches and used to prioritize and queue the traffic as it traverses the core
C.Traffic inbound from the access layer to the distribution layer can be trusted or reset dependingupon the ability of the access layer switches. Priority access into the core is provided based onLayer 3 QoS tags
D.IP precedence, DSCP, QoS group, IP address, and ingress interface are Layer 2 characteristics that are set by the access layer as it passes traffic to the distribution layer. Thedistribution layer, once it has made a switching decision to the core layer, strips these off
E.MAC address, Multiprotocol Label Switching (MPLS); the ATM cell loss priority (CLP) bit, theFrame Relay discard eligible (DE) bit, and ingress interface are established by the voicesubmodule (distribution layer) as traffic passes to the core layer
F.The distribution layer inspects a frame to see if it has exceeded a predefined rate of trafficwithin a certain time frame, which is typically a fixed number internal to the switch. If a frame isdetermined to be in excess of the predefined rate limit, the CoS value can be marked up in a waythat results in the packet being dropped

4.單項(xiàng)選擇題Which of the characteristics below is associated with the (QoS) Integrated Services Model?()

A.QoS classified at layer 3 using IP precedence or DSCP
B.Guaranteed rate service
C.Implemented using FIFO queues
D.All traffic has an equal chance of being dropped

6.多項(xiàng)選擇題Which QoS mechanisms can you use on a converged network to improve VoIP quality?()

A.The use of a queuing method that will give VoIP traffic strict priority over other traffic
B.The use of RTP header compression for the VoIP traffic
C.The proper classification and marking of the traffic as close to the source as possible
D.The use of 802.1QinQ trunking for VoIP traffic
E.The use of WRED

7.單項(xiàng)選擇題You are a network administrator of a large investor relations company that uses a switchednetwork to carry both data and IP telephony services. Why should you carry voice traffic on aseparate VLAN?()

A.IP phones require inline power and must be in separate VLAN to receive inline power
B.IP telephony applications require prioritization over other traffic as they are more delaysensitive
C.IP phones can only receive IP addresses through DHCP if they are in separate VLAN
D.The CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vlan

8.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

9.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

10.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

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