單項選擇題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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1.單項選擇題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

2.單項選擇題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

3.單項選擇題Which encryption type does WPA2 use?()

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

4.多項選擇題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

5.單項選擇題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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