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單項(xiàng)選擇題Which cisco ios command can help to determine the timing of various debug events,relative to each other, when you are debugging a complicated router issue?（）

A.service timestamps debug datetime msec
B.show clock detail
C.clock calendar-valid
D.service timestamps log datetime msec

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1.單項(xiàng)選擇題交換機(jī)上默認(rèn)那些是可以修改和移動(dòng)的vlan？（）

A. 2 through 1001
B. 1 through 1001
C. 1 through 1002
D. 2 through 1005

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2.單項(xiàng)選擇題Assuming the default switch configuration，which approach should you use to configure the extended vlan range（1006 through 4094） on a cisco catalyst 3750 series switch？（）

A.Configure the switch to be in VTP client mode.
B.Configure the switch to be in VTP domaint mode.
C.Configure the switch to be in VTP transparent mode.
D.Configure the switch to be in VTPv2.

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3.單項(xiàng)選擇題On which options are standard access list based?（）

A.source address and subnet mask
B.destination address and wildcard mask
C.source address and wildcard mask
D.destination address and subnet mask

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4.多項(xiàng)選擇題哪兩個(gè)連接協(xié)議用于在單一鏈路攜帶多個(gè)VLAN？（）

A. VTP
B. 802.1q
C. IGP
D. ISL
E. 802.3u

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5.多項(xiàng)選擇題Which two data intergrity algorithms are commonly used in VPN solutions?（）

A.HMAC-MD5
B.RSA
C.HMAC-SHA-1
D.DH1
E.DH2

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