Why is an OC－3 2F－BLSR not feasible?()A. Switch times would exceed 50 ms for an OC-3 BLSR ring.B. An equal amount of working and protect bandwidth is required.C. DCC bandwidth is not large enough to handle K1/K2 processing.D. There is not enough bandwidth

题目
Why is an OC－3 2F－BLSR not feasible?()

A. Switch times would exceed 50 ms for an OC-3 BLSR ring.

B. An equal amount of working and protect bandwidth is required.

C. DCC bandwidth is not large enough to handle K1/K2 processing.

D. There is not enough bandwidth in an OC-3 ring to justify BLSR protection.

相似考题

1.TTC标准OC-3的传输速率为A．512.4 MbpsB．155.52 MbpsC．622.08 MbpsD．Mbps

2.You have overworked yourself.() a holiday to relax?A、Why not to go onB、Why don't go onC、Why don't haveD、Why not go on

3.It is not feasible to wait four days until the body______(use)to the new time zone.

4.He doesn’t understand __________ so early in the morning.(A) why to start(B) why start(C) why to starting(D) why they should be start

更多“Why is an OC－3 2F－BLSR not feasible?() ”相关问题

  • 第1题：

    ITU标准OC-3的数据传输速率为______。

    A．51.84 Mbps

    B．155.520 Mbps

    C．622.080 Mbps

    D．1.244 Gbps


    正确答案：B
    解析：无源光纤网(PON)在ITU G.983建议中标准化的，分为两个部分：①OC-3，155.520Mbps的对称业务；②上行OC-3(155.520Mbps)、下行OC-12(622.080Mbps)的非对称业务。

  • 第2题：

    按照同步光纤网传输标准(SONET)，OC-3的数据速率为(13)Mb/s。

    A．150.336

    B．155.52

    C．622.08

    D．2488.32


    正确答案：B
    解析：美国制定的光纤多路复用标准叫做SONET(Synchronous　Optical　Network)，CCITT对应的建议是SDH(Synchronous　Digital　Hierarchy)。这两种标准的速率如下表所示。

    其中0C-3、0C-12和0C-48(表中黑体部分)是常用的。

  • 第3题：

    Refer to the exhibit. EIGRP has been configured on al l routers in the network. The command metric weights 0 0 1 0 0 has been added to the EIGRP process so that only the delay metric is used in the path calculations. Which router will R1 select as the successor and feasible successor for Network A?（）

    A. R 4 becomes the successor for Network A and will be placed in the routing table. R2 becomes the feasible successor for Network A

    B. R4 becomes the successor for Network A and will be included in the routing table. No feasible successor will be selected a s the advertised distance from R2 is higher than the feasible distance

    C. R2 becomes the successor and will be placed in the routing table. R4 becomes the feasible successor for Network A

    D. R2 becomes the successor and will be placed in the routing t able. No feasible successor will be selected as the reported distance from R4 is lower than the feasible distance


    参考答案：B

  • 第4题：

    It's prudent to start any exercise program gradually at first.

    A:workable
    B:sensible
    C:possible
    D:feasible

    答案：B
    解析：
    本句意思：初期逐渐开始锻炼计划比较慎重。prudent审慎的，精明的。sensible明智的， 合理的；possible可能的；feasible可行的。

  • 第5题：

    Miss Wang wanted to know（）for the film.

    • A、why was he late
    • B、why is he late
    • C、why he is late
    • D、why he was late

    正确答案:D

  • 第6题：

    Routers A and B are connected with a point-to-point OC-3 interface. Each routers OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas. How many IS-IS adjacencies exist between the two routers?（）

    • A、0
    • B、1
    • C、2
    • D、3

    正确答案:B

  • 第7题：

    Why is an STM-1 2F-MS-SPRing NOT feasible？（）

    • A、 An equal amount of working and protect bandwidth is required.
    • B、 DCC bandwidth is not large enough to handle K1/K2 processing.
    • C、 Switch times would exceed 50 ms for an STM-1 MS-SPRing ring.
    • D、 There is not enough bandwidth in an STM-1 ring to justify MS-SPRing protection.

    正确答案:A

  • 第8题：

    A technician is looking for an emergency connection solution not reliant on local data or power services. Which of the following should the technician implement?（）

    • A、Satellite
    • B、ADSL
    • C、ISDN
    • D、OC-3

    正确答案:A

  • 第9题：

    单选题
    He is opposed to the project for the reason why it is not feasible for the time being.
    A

    to

    B

    for the reason why

    C

    feasible

    D

    for the time being


    正确答案： B
    解析：

  • 第10题：

    单选题
    Why is an OC-3 2F-BLSR not feasible?（）
    A

    Switch times would exceed 50 ms for an OC-3 BLSR ring.

    B

    An equal amount of working and protect bandwidth is required.

    C

    DCC bandwidth is not large enough to handle K1/K2 processing.

    D

    There is not enough bandwidth in an OC-3 ring to justify BLSR protection.


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Which condition must be satisfied before an EIGRP neighbor can be considered a feasiblesuccessor?（）
    A

    The neighbor's advertised distance must be less than or equal to the feasible distance of the current successor.

    B

    The neighbor's advertised distance must be less than the f easible distance of the current successor.

    C

    The neighbor's advertised distance must be greater than the feasible distance of the current successor.

    D

    The neighbor's advertised distance must be equal to the feasible distance of the current successor .

    E

    The neighbor's advertised distance must be greater than or equal to the feasible distance of the current successor.


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Vehicles（）only the simplest of the engine improvements that methanol makes feasible would still contribute to an immediate lessening of urban air pollution.
    A

    corporate

    B

    cooperating

    C

    operating

    D

    incorporating


    正确答案： B
    解析： 暂无解析

  • 第13题：

    TTC标准OC-3的传输速率为()

    A.512.4Mbps

    B.155.52Mbps

    C.622.08Mbps

    D.1.244Gbps


    正确答案：B

  • 第14题：

    Routers A and B are connected with a point-to-point OC-3 interface. Each routers OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas. How many IS-IS adjacencies exist between the two routers?（）

    A.0

    B.1

    C.2

    D.3


    参考答案：B

  • 第15题：

    请在（16）处填上最佳答案。

    [A] feasible

    [B] available

    [C] reliable

    [D] applicable


    正确答案：B

  • 第16题：

    甚高频的英文全称（）

    • A、Very high fantasy
    • B、Very high frequency
    • C、Very high feasible

    正确答案:B

  • 第17题：

    Which condition must be satisfied before an EIGRP neighbor can be considered a feasiblesuccessor?（）

    • A、The neighbor's advertised distance must be less than or equal to the feasible distance of the current successor.
    • B、The neighbor's advertised distance must be less than the f easible distance of the current successor.
    • C、The neighbor's advertised distance must be greater than the feasible distance of the current successor.
    • D、The neighbor's advertised distance must be equal to the feasible distance of the current successor .
    • E、The neighbor's advertised distance must be greater than or equal to the feasible distance of the current successor.

    正确答案:A

  • 第18题：

    Router R1 lists 4 routes for subnet 10.1.1.0/24 in the output of the show ip eigrp topology all - links command. The variance 200 command is configured, but no other related commands are configured. Which of the following rules are true regarding R1's decision of what r outes to add to the IP routing table? Note that RD refers to reported distance and FD to feasible distanc E.（）

    • A、Adds all routes for which the metric is <= 200 * the best metric among all routes
    • B、Adds all routes because of the ridiculously high variance setting
    • C、Adds all successor and feasible successor routes
    • D、Adds all successor and feasible successor routes for which the metric is<=200 * the best metric among all routes

    正确答案:D

  • 第19题：

    Which of the following has the HIGHEST data rate speed?（）

    • A、T1
    • B、ADSL
    • C、SDSL
    • D、OC-3

    正确答案:D

  • 第20题：

    单选题
    按照ITu标准，OC-3的传输速度是（）。
    A

    51.84Mbps

    B

    155.52Mbps

    C

    622.08Mbps

    D

    1.244Gbps


    正确答案： D
    解析： 无源光纤网PON，按照ITU标准可分为两部分：（1）oC-3，155.520Mbps的对称业务。（2）上行OC-3，155.520Mbps；下行0C-12，622.080Mbps的不对称业务。

  • 第21题：

    单选题
    TTC标准OC-3的传输速率为（　　）。
    A

    51.84Mbit/s

    B

    155.52Mbit/s

    C

    622.08Mbit/s

    D

    1.244Gbit/S


    正确答案： A
    解析：
    无源光纤网PON是ITU的SG15研究组在G.983建议“基于无源光纤网的高速光纤接入系统”进行标准化得到的。该建议分为两个部分：
    ①OC-3.155.520Mbit/s的对称业务；
    ②上行OC-3，155.520Mbit/s，下行OC-12，622.080Mbit/s的不对称业务。

  • 第22题：

    单选题
    Why is an STM-1 2F-MS-SPRing NOT feasible？（）
    A

     An equal amount of working and protect bandwidth is required.

    B

     DCC bandwidth is not large enough to handle K1/K2 processing.

    C

     Switch times would exceed 50 ms for an STM-1 MS-SPRing ring.

    D

     There is not enough bandwidth in an STM-1 ring to justify MS-SPRing protection.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Routers A and B are connected with a point-to-point OC-3 interface. Each router’s OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas.How many IS-IS adjacencies exist between the two routers？（）
    A

    0

    B

    1

    C

    2

    D

    3


    正确答案： C
    解析： 暂无解析

相关内容