If you want to upgrade the router but do not have a network cable, you can use the configuration cable and use the ______ protocol to upgrade through HyperTerminal.

• A.Xmodem
• B.Zmodem
• C.TFTP
• D.Ymodem

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The following ACL is configured on the MSR router:
acl number 3999
rule permit tcp source 10.10.10.1 255.255.255.255 destination 20.20.20.1 0.0.0.0 time-range lucky
Then the correct understanding of the ACL is _______. (Multiple choice)

• A.The rule can match TCP packets from any source network segment
• B.The rule only takes effect during the lucky time period
• C.The rule can match TCP packets to any destination network segment
• D.This rule only matches packets destined for 20.20.20.1
• E.This rule only matches data packets originating from 10.10.10.1

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In the following statement about HDLC, what is wrong is ______. (Multiple choice)

• A.The HDLC protocol uses a unified frame format, so both data messages and protocol messages are transmitted in standard format frames on the HDLC link.
• B.HDLC can run on the same/asynchronous link, so it has a wide range of applications.
• C.The HDLC protocol is a bit-oriented transport layer protocol.
• D.Any bit stream can be transparently transmitted on the HDLC link.

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119.100.1100 1000
132.119.100.1100 1111 .... Broadcast address
13. The well-known port number of the transport layer used by TFTP is ______.

• A.67
• B.53
• C.69
• D.68

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The command to configure the bridge priority of the switch SWA to 0 is ______.

• A.[SWA] stp root priority 0
• B.[SWA] stp priority 0
• C.[SWA-Ethernet1/0/1] stp priority 0
• D.[SWA-Ethernet1/0/1] stp root priority 0

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