Which command shows system hardware an...

单项选择题Which command shows system hardware and software version information？（）

A.show configuration
B.show environment
C.show inventory
D.show platform
E.show version

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1.单项选择题When you are logged into aswitch，which prompt indicates that you are inprivileged mode？（）

A.%
B.@
C.>
D.$
E.#

2.单项选择题The router address 192.168.1.250 is the default gateway for both the Web Server 2 and Host 1. What is the correct subnet mask for this network?（）

A.255.255.255.0
B.255.255.255.192
C.255.255.255.250
D.255.255.255.252

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3.单项选择题What must be configured on the network in order for users on the Internet to view web pages located on Web Server 2?（）

A.On router R2， configure a default static route to the 192.168.1.0 network.
B.On router R2， configure DNS to resolve the URL assigned to Web Server 2 to the 192.168.1.10 address.
C.On router R1， configure NAT to translate an address on the 209.165.100.0/24 network to 192.168.1.10.
D.On router R1， configure DHCP to assign a registered IP address on the 209.165.100.0/24 network to Web Server 2.

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4.单项选择题When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork?（）

A.0
B.1
C.2
D.3
E.4

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5.单项选择题Users on the 192.168.1.0/24 network must access files located on the Server 1. What route could be configured on router R1 for file requests to reach the server?（）

A.ip route 0.0.0.0 0.0.0.0 s0/0/0
B.ip route 0.0.0.0 0.0.0.0 209.165.200.226
C.ip route 209.165.200.0 255.255.255.0 192.168.1.250
D.ip route 192.168.1.0 255.255.255.0 209.165.100.250

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6.单项选择题Which wireless LAN design ensures that a mobile wireless client will not lose connectivity when moving from one access point to another?（）

A.using adapters and access points manufactured by the same company
B.overlapping the wireless cell coverage by at least 10%
C.configuring all access points to use the same channel
D.utilizing MAC address filtering to allow the client MAC address to authenticate with the surrounding APs

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7.单项选择题Which encryption type does WPA2 use?（）

A.AES-CCMP
B.PPK via IV
C.PSK
D.TKIP/MIC

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8.多项选择题Which are valid modes for a switch port used as a VLAN trunk? (Choose three.)（）

A.transparent
B.auto
C.on
D.desirable
E.blocking
F.forwarding

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9.单项选择题Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet?（）

A.Full-duplex Ethernet consists of a shared cable segment. Half-duplex Ethernet provides a point-to-point link.
B.Full-duplex Ethernet uses a loopback circuit to detect collisions. Half-duplex Ethernet uses a jam signal.
C.Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth.
D.Full-duplex Ethernet uses two wires to send and receive. Half-duplex Ethernet uses one wire to send and receive.

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10.多项选择题Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies? (Choose two.)（）

A.copier
B.microwave oven
C.toaster
D.cordless phone
E.IP phone
F.AM radio

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