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试卷名称:思科认证640-802模拟试卷15

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Which three approaches can be used while migrating from an IPV4 addressing scheme to an IPV6 scheme．

A．statically map IPV4 address to IPV6 addresses

B．configuration IPv4 tunnels between IPV6 islands

C．use DHCPv6 to map IPV4 addresses to IPV6 addresses

D．use proxying and translation to translate IPV6 packets into IPV4 packets

E．enable dual-stack routing

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Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state? redundant spanned provisioned converged

How many bits are contained in each field of an IPv6 address? 24 4 8 16

Which option is a valid IPv6 address? 2001:0000:130F::099a::12a 2002:7654:A1AD:61:81AF:CCC1 FEC0:ABCD:WXYZ:0067::2A4 2004:1:25A4:886F::1

How is an EUI-64 format interface ID created from a 48-bit MAC address? by appending 0xFF to the MAC address． by prefixing the MAC address with 0xFFEE． by prefixing the MAC address with 0xFF and appending 0xFF to it． by inserting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address by prefixing the MAC address with 0xF and inserting 0xF after each of its first three bytes．

Refer to the exhibit． At the end of an RSTP election process, which access layer switch port will assume the discarding role? [*] Switch3, port fa0/1 Switch3, port fa0/12 Switch4, port fa0/11 Switch4, port fa0/2 Switch3, port Gi0/1

Which three approaches can be used while migrating from an IPV4 addressing scheme to an IPV6 scheme． statically map IPV4 address to IPV6 addresses configuration IPv4 tunnels between IPV6 islands use DHCPv6 to map IPV4 addresses to IPV6 addresses use proxying and translation to translate IPV6 packets into IPV4 packets enable dual-stack routing

Which two statements describe characteristics of IPv6 unicast addressing? Global addresses start with 2000::/3． Link-local addresses start with FE00:/12． Link-local addresses start with FF00::/10． There is only one loopback address and it is ::1． If a global address is assigned to an interface, then that is the only allowable address for the interface．

Refer to the diagram． All hosts have connectivity with one another． Which statements describe the addressing scheme that is in use in the network? [*] The subnet mask in use is 255．255．255．192． The subnet mask in use is 255．255．255．128． The IP address 172．16．1．25 can be assigned to hosts in VLAN1 The IP address 172．16．1．205 can be assigned to hosts in VLAN1 The LAN interface of the router is configured with one IP address．

Which two benefits are provided by using a hierarchical addressing network addressing scheme? reduces routing table entries auto-negotiation of media rates efficient utilization of MAC addresses dedicated communications between devices ease of management and troubleshooting

What are three advantages of VLANs? VLANs establish broadcast domains in switched networks． VLANs utilize packet filtering to enhance network security． VLANs can greatly simplify adding, moving, or changing hosts on the network． VLANs provide a low-latency internetworking alternative to routed networks． VLANs allow access to network services based on department, not physical location．

Refer to the exhibit．Which two statements are true of the interfaces on switch1? [*] A hub is connected directly to FastEthernet0/5 FastEthernet0/1 is configured as a trunk link． FastEthernet0/5 has statically assigned mac address Interface FastEthernet0/2 has been disable． Multiple devices are connected directly to FastEthernet0/1．

Which two of these statements regarding RSTP are correct? RSTP cannot operate with PVST+． RSTP defines new port roles． RSTP defines no new port states． RSTP is a proprietary implementation of IEEE 802．1D STP． RSTP is compatible with the original IEEE 802．1D STP．

What are the possible trunking modes for a switch port? transparent auto on desirable client

Three switches are connected to one anther via trunk ports．Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1? the switch with the lowest MAC address the switch with the higest MAC address the switch witch the higest IP address the switch with the lowest IP address

What is the alternative notation for the IPV6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72? B514:82C3:0029::EC7A:0000:EC72 B514:82C3:0029:EC7A:EC72 B514:82C3::0029:EC7A:0:EC72 B514:82C3::0029:EC7A:EC72

An administrator must assign static IP addresses to the servers in a network．For network 192．168．20．24/29, the router is assigned the first usable host address while the sales server is given the last usable host address． Which of the following should be entered into the IP propertied box for the sales server? IP address:192．168．20．14 Subnet Mask:255．255．255．248 Default Gateway:192．168．20．9 IP address:192．168．20．254 Subnet Mask:255．255．255．0 Default Gateway:192．168．20．1 IP address:192．168．20．30 Subnet Mask:255．255．255．248 Default Gateway:192．168．20．25 IP address:192．168．20．30 Subnet Mask:255．255．255．240 Default Gateway:192．168．20．17 IP address:192．168．20．30 Subnet Mask:255．255．255．240 Default Gateway:192．168．20．25

Refer to the exhibit． A network administrator is adding two new hosts to SwitchA． Which three values could be used for the configuration of these hosts? [*] host A IP address: 192．168．1．79 host A IP address: 192．168．1．64 host A default gateway: 192．168．1．78 host B IP address: 192．168．1．128 host B IP address: 192．168．1．190

the network administrator has been asked to give reasons for moving from ipv4 to ipv6． what are two valid reasons for adopting ipv6 over ipv4? telnet access does not require a password nat no broadcast chanage of destination address in the ipv6 header autoconfiguration

Which three of these statements regarding 802．1Q trunking are correct? 802．1Q native VLAN frames are untagged by default． 802．1Q trunking ports can also be secure ports． 802．1Q trunks can use 10 Mb/s Ethernet interfaces． 802．1Q trunks require full-duplex, point-to-point connectivity． 802．1Q trunks should have native VLANs that are the same at both ends．

How many broadcast domains are shown in the graphic assuming only the default vlan is configured on the switches? [*] one six twelve two

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