ISDN30B＋D中的D通道的带宽为（）。 A: 16K B: 32K C: 64K D: 128K

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2022-06-01 问题

ISDN30B＋D中的D通道的带宽为（）。 A: 16K B: 32K C: 64K D: 128K

2022-06-04 问题

ISDN PRI接口可以提供(<br/>)的B信道(欧洲标准)。 A: 2 B: 23 C: 30 D: 32

2022-06-04 问题

在北美地区，ISDN PRI由多少个B信道组成？ A: 2 B: 16 C: 23 D: 30 E: 64

2022-06-01 问题

ISDN30B+D的基群速率接口的传输速率为（）Mbit/s。 A: Al B: B2 C: C3 D: D4

2022-07-01 问题

‎目前普通家庭连接因特网，通过以下设备可以实现上网漫游，按传输速率（由低到高）顺序为‏ A: FDDI、ADSL、ISDN、调制解调器 B: 调制解调器、ADSL 、FDDI 、ISDN C: 调制解调器、ISDN、ADSL、FDDI D: 调制解调器、ISDN、FDDI 、ADSL

‎目前普通家庭连接因特网，通过以下设备可以实现上网漫游，按传输速率（由低到高）顺序为‏ A: FDDI、ADSL、ISDN、调制解调器 B: 调制解调器、ADSL 、FDDI 、ISDN C: 调制解调器、ISDN、ADSL、FDDI D: 调制解调器、ISDN、FDDI 、ADSL

2021-04-14 问题

用ISDN

2021-04-14 问题

【单选题】97:The difference between the mobile ISDN and MPDS isthat A. the mobile ISDN is charged by connection time and MPDS is charged by lVlbits transferred B. the mobile ISDN is charged by Mbits transferred and MPDS is charged by connection time C. there is no difference between the mobile ISDN and MPDS D. the communication fee of the mobile ISDN is inexpensive than that of MPDS

【单选题】97:The difference between the mobile ISDN and MPDS isthat A. the mobile ISDN is charged by connection time and MPDS is charged by lVlbits transferred B. the mobile ISDN is charged by Mbits transferred and MPDS is charged by connection time C. there is no difference between the mobile ISDN and MPDS D. the communication fee of the mobile ISDN is inexpensive than that of MPDS

2021-04-14 问题