CompTIA认证考试

When installing a security system, which of the following connectors would be used to connect the security system to the telephone service demarcation?()A、RJ-31xB、RJ-11C、RS-232D、DB-9

题目

When installing a security system, which of the following connectors would be used to connect the security system to the telephone service demarcation?()

  • A、RJ-31x
  • B、RJ-11
  • C、RS-232
  • D、DB-9
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