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While using a packet analyzer， you notice four additional bytes being added to the packets in the Company network. Which protocol inserts a four byte tag into the Ethernet frame and recalculates CRC value？ （）
- A、 DTP
- B、 VTP
- C、 802.1Q
- D、 ISL
- E、 None of the other alternatives apply
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更多 “ While using a packet analyzer， you notice four additional bytes being added to the packets in the Company network. Which protocol inserts a four byte tag into the Ethernet frame and recalculates CRC value？ （）A、 DTPB、 VTPC、 802.1QD、 ISLE、 None of the other alternatives apply” 相关考题
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You are troubleshooting an issue which is causing full-sized packets entering the MPLS cloud be dropped. You have discovered that one of the switches in the MPLS core is not a Cisco switch, but otherwise the MPLS MTU size is set to 1508 bytes on the routers.Based on this information, which of these may be the reason the packets are being dropped?（）A. The switch on you MPLS core that was not produced by Cisco does not support oversized packetsB. No switches support oversized packetsC. By definition, the maximum MTU is 1500 bytesD. As MPLS VPN labeling increases the size of the packet by 8 bytes, the IP MTU should have been changed to 1508
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Whileusingapacketanalyzer,younoticefouradditionalbytesbeingaddedtothepacketsintheCompanynetwork.WhichprotocolinsertsafourbytetagintotheEthernetframeandrecalculatesCRCvalue?()
A.DTPB.VTPC.802.1QD.ISLE.Noneoftheotheralternativesapply
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VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A. provide service internetworkingB. support transparency for Layer 2 framesC. indicate destination as a connection identifierD. map to the DLCI in service internetworking
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What are two things that an access point （AP） does when it receives an 802.11 frame from a Wi-Fi Multimedia （WMM） client？ （）A、EAP-FASTEAP-FAS Access Point Protocol （LWAPP） packet is used to generate an 802.1 p priority value in the packets， which are sent to an Ethernet switch by the controllers.B、The AP will police the 802.1 le priority value to ensure it does not exceed the maximum value allowed for the QoS policy that is assigned to that client.C、Once the LWAPP packet is received， the AP generates the IEEE 802.1 p priority value.D、The AP will map the 802.11e priority value to the DSCP value.E、The AP will map the DSCP value to the outer LWAPP frame.
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You need to implement a high availability design in the Company routed network. Which protocol allows for the automatic selection and simultaneous use of multiple available gateways as well as automatic failover between those gateways？（）A、 VRRPB、 GLBPC、 IRDPD、 HSRPE、 None of the other alternatives apply
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You are troubleshooting an issue which is causing full-sized packets entering the MPLS cloud be dropped. You have discovered that one of the switches in the MPLS core is not a Cisco switch, but otherwise the MPLS MTU size is set to 1508 bytes on the routers. Based on this information, which of these may be the reason the packets are being dropped?（）A、The switch on you MPLS core that was not produced by Cisco does not support oversized packetsB、No switches support oversized packetsC、By definition, the maximum MTU is 1500 bytesD、As MPLS VPN labeling increases the size of the packet by 8 bytes, the IP MTU should have been changed to 1508
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Two Company switches are connected via a trunk link. In this network， the original frame is encapsulated and an additional header is added before the frame is carried over a trunk link. At the receiving end， the header is removed and the frame is forwarded to the assigned VLAN. This describes which technology？（）A、 DISLB、 ISLC、 DTPD、 IEEE 802.1QE、 MPLSF、 None of the other alternatives apply
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ISL is being configured on a Company switch. Which of the following choices are true regarding the ISL protocol？ （）A、 It can be used between Cisco and non-Cisco switch devices.B、 It calculates a new CRC field on top of the existing CRC field.C、 It adds 4 bytes of protocol-specific information to the original Ethernet frame.D、 It adds 30 bytes of protocol-specific information to the original Ethernet frame.
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The core Company switches are configured to use 802.1Q trunks. Which three statements are correct with regard to the IEEE 802.1Q standard？（）A、 The IEEE 802.1Q frame format adds a 4 byte field to a Ethernet frameB、 The packet is encapsulated with a 26 byte header and a 4 byte FCSC、 The protocol uses point-to-multipoint connectivityD、 The protocol uses point-to-point connectivityE、 The IEEE 802.1Q frame uses multicast destination of 0x01-00-0c-00-00F、 The IEEE 802.1Q frame retains the original MAC destination address
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A user opens a webpage that requires the transmission of packets from the Web server to the client's browser. The packets transmitted from the Web server to the client exceed the smallest MTU value on the communications path. Which two protocol functions allow this type of communication?（）A、packet segmentationB、serialized checkingC、packet sequencingD、parallel checking
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A small business currently has four separate servers， three of which perform low-overhead tasks with small memory footprints. How could the company BEST reduce power consumption among these four servers， while not sacrificing functionality？（）A、Enable each server’s Cool ’n’ Quiet and/or SpeedStep functionality so that processing power is conserved.B、Enforce auto-shutdown routines on all four servers for after-hours power saving while the office is closed.C、Consolidate the four servers onto the best two，combining them logically by tasks and memory consumption.D、Consolidate the four servers onto the most powerful machine using virtualization.
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If you needed to transport traffic coming from multiple VLANs （connected between switches）， and your CTO was insistent on using an open standard，which protocol would you use？（）A、802.11BB、spanning-treeC、802.1QD、ISLE、VTPF、Q.921
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VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A、provide service internetworkingB、support transparency for Layer 2 framesC、indicate destination as a connection identifierD、map to the DLCI in service internetworking
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Which Ethernet field is used to differentiate between the FCoE frame and the FIP frame？（）A、 Ethernet FCSB、 Source addressC、 Destination addressD、 EtherTypeE、 Protocol type
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You need to configure a new Company switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packet？（）A、 CompanySwitch（config-if）#switchport trunk encapsulation dot1qB、 CompanySwitch（config-if）#switchport trunk encapsulation itefC、 CompanySwitch（config-if）#switchport trunk encapsulation fddiD、 CompanySwitch（config-if）#switchport trunk encapsulation islE、 None of the other alternatives apply
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EIGRP is being used as the routing protocol on the company network. While troubleshooting somenetwork connectivity issues， you notice a large number of EIGRP SIA （Stuck in Active） messages.What causes these SIA routes？（）A、The neighboring router stops receiving ACK packets from this routerB、The neighboring router starts receiving route updates from this routerC、The neighboring router is too busy to answer the query （generally caused by high CPUutilization）D、The neighboring router is having memory problems and cannot allocate the memory to processthe query or build the reply packet
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The Company core switches use 802.1Q trunks to connect to each other. How does 802.1Q trunking keep track of multiple VLANs？ （）A、 It tags the data frame with VLAN information and recalculates the CRC valueB、 It encapsulates the data frame with a new header and frame check sequenceC、 It modifies the port index of a data frame to indicate the VLAND、 It adds a new header containing the VLAN ID to the data frameE、 None of the other alternatives apply
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Your company has just upgraded its CATAGORY 5 Ethernet network from 10Mbps to 100Mbps. After the upgrade， the 20 Windows 2000 Professional computers in the marketing department can no longer connect to the network. The remaining 80 Windows 2000 computers in the company can connect， however. Your company uses NWLink as the only network protocol.You need to connect the computers in the marketing department to the network. What must you do？ （）A、Configure the NWLink frame type of the network adapters to be ethernet 802.3.B、Configure the NWLink frame type of the network adapters to be ethernet II.C、Replace the network adapters with 10/100 BNC adapters.D、Replace the network adapters with 10/100 UTP network adapters.
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多选题The core Company switches are configured to use 802.1Q trunks. Which three statements are correct with regard to the IEEE 802.1Q standard？（）AThe IEEE 802.1Q frame format adds a 4 byte field to a Ethernet frameBThe packet is encapsulated with a 26 byte header and a 4 byte FCSCThe protocol uses point-to-multipoint connectivityDThe protocol uses point-to-point connectivityEThe IEEE 802.1Q frame uses multicast destination of 0x01-00-0c-00-00FThe IEEE 802.1Q frame retains the original MAC destination address
考题
单选题You need to configure a new Company switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packet？（）A
CompanySwitch（config-if）#switchport trunk encapsulation dot1qB
CompanySwitch（config-if）#switchport trunk encapsulation itefC
CompanySwitch（config-if）#switchport trunk encapsulation fddiD
CompanySwitch（config-if）#switchport trunk encapsulation islE
None of the other alternatives apply
考题
多选题ISL is being configured on a Company switch. Which of the following choices are true regarding the ISL protocol？ （）AIt can be used between Cisco and non-Cisco switch devices.BIt calculates a new CRC field on top of the existing CRC field.CIt adds 4 bytes of protocol-specific information to the original Ethernet frame.DIt adds 30 bytes of protocol-specific information to the original Ethernet frame.
考题
单选题While using a packet analyzer， you notice four additional bytes being added to the packets in the Company network. Which protocol inserts a four byte tag into the Ethernet frame and recalculates CRC value？ （）A
DTPB
VTPC
802.1QD
ISLE
None of the other alternatives apply
考题
多选题EIGRP is being used as the routing protocol on the company network. While troubleshooting somenetwork connectivity issues， you notice a large number of EIGRP SIA （Stuck in Active） messages.What causes these SIA routes？（）AThe neighboring router stops receiving ACK packets from this routerBThe neighboring router starts receiving route updates from this routerCThe neighboring router is too busy to answer the query （generally caused by high CPUutilization）DThe neighboring router is having memory problems and cannot allocate the memory to processthe query or build the reply packet
考题
单选题The Company core switches use 802.1Q trunks to connect to each other. How does 802.1Q trunking keep track of multiple VLANs？ （）A
It tags the data frame with VLAN information and recalculates the CRC valueB
It encapsulates the data frame with a new header and frame check sequenceC
It modifies the port index of a data frame to indicate the VLAND
It adds a new header containing the VLAN ID to the data frameE
None of the other alternatives apply
考题
单选题You need to implement a high availability design in the Company routed network. Which protocol allows for the automatic selection and simultaneous use of multiple available gateways as well as automatic failover between those gateways？（）A
VRRPB
GLBPC
IRDPD
HSRPE
None of the other alternatives apply
考题
单选题Two Company switches are connected via a trunk link. In this network， the original frame is encapsulated and an additional header is added before the frame is carried over a trunk link. At the receiving end， the header is removed and the frame is forwarded to the assigned VLAN. This describes which technology？（）A
DISLB
ISLC
DTPD
IEEE 802.1QE
MPLSF
None of the other alternatives apply
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