首页 > 题库 > 200-301

2026年CCNA 200-301考试备考：模拟测试与学习资料，思科认证网络助理资格认证 | 思博网络

通过思博网络提供的全面资源，更好地准备2026年的200-301 CCNA考试。我们的考试准备课程结合了各种模拟测试和学习材料，旨在帮助您增强对网络技术的理论理解和实践技能。请深入探索我们提供的丰富多样的考试资料，包括各种模拟试题和练习题，以巩固您的知识储备。参加模拟考试，以模拟真实的考试情境，从而提升你的应试能力。无论您是需要考试答案，还是想要免费测试样本，思博网络都能为您提供必要的资源，以帮助您更好地准备考试。通过我们的在线历年真题和考试模拟系统，你将获得宝贵的经验和信心，从而更容易取得成功。请信任思博网络，它将为您提供通过CCNA认证考试所需的工具与帮助。

问题 #1

Which of the following statement is correct?

A. When the OCh path exists, you can directly create a client path. The NMS automatically creates an ODUk path.

B. Deactivation will delete the configuration of the U2000, which has no impact on the device side services.

C. The optical layer path must be deleted first when the electrical layer path is removed.

D. The optical layer path and the electrical layer path are independent. It is not necessary to delete the electrical layer path when deleting the optical layer path.

正确答案：D

问题 #2

Which of the following descriptions about electrical layer scheduling is wrong?

A. Inter-board cross-connect refers to the cross-connect configured between different boards. Inter-board cross-connection dispatches ODUk services between boards in a subrack through the backplane and centralized cross-connection boards.

B. Intra-board cross-connect refers to the cross-connect configured between different ports on the same board.

C. TTA and TDC boards support aggregation mode and non-aggregation mode.correct

D. In the aggregation mode application scenario, it is necessary to cross within the board first, and then cross between boards.

E. All cross-connects need to be configured on the network management system.

正确答案：C

问题 #3

How many VC12 virtual TE links are supported by the same physical board or between two adjacent network elements?

A. 1

B. 4correct

C. 8

D. 2

正确答案：B

问题 #4

Which of the following statements about the delay test is wrong?

A. The delay is divided into the delay of the store-and-forward device and the delay of the bit-forward device. Huawei devices are all store-and-forward devices

B. The timing starts from the entry of the first bit of the data frame, and ends when the first bit of the data frame appears on the output terminal

C. The time difference between the two is the delay of the bit forwarding device

D. The timing starts from the entry of the first bit of the data frame, and ends when the first bit of the data frame appears on the output terminalcorrect

E. The time difference between the two is the delay of the bit forwarding device

F. During the delay test, the frame rate can be greater than the throughput

正确答案：D

问题 #5

When the board detects that the error rate of the regenerator section signal exceeds 10 by detecting the B1 byte, the B1_SD alarm is reported.

A. TRUE

B. FALSE

正确答案：B

问题 #6

Which of the following descriptions about ODUflex are correct? (Multiple choice)

A. The bandwidth of each TS sub-slot of ODUflex is 1.25Gbit/s

B. The advantage of ODUflex is that users can flexibly configure the capacity of the container according to the size of the business, so as to achieve the most efficient utilization of railway bandwidth.

C. The services supported by ODUflex range from 1.25Gbit/s to 10Gbit/s

D. ODUflex refers to ODUk technology with non-fixed bandwidth

正确答案：ABCD

问题 #7

If a fiber break occurs between the amplifier OA and the FIU, which of the following alarms will be reported by the system?

A. MUT_LOScorrect

B. R_LOS

C. OTS_LOS

D. OMS_LOS

正确答案：A

问题 #8

Which of the following statements about the main and backup channels of optical line protection is wrong?

A. "Initial Difference Between Active and Standby Channels (dB)"―the reference value used to set the optical power difference between the active and standby channels of the board.

B. "Master-standby channel difference threshold (dB)" - used to set the difference between the main and standby optical ports of the board when the optical power difference reaches a certain value, it will be regarded as a signal failure (SF).

C. When the difference in the optical power of the full backup exceeds the threshold, the optical switch will switch the service to the backup channel, and the set value supports query. Recommended setting is 5dBcorrect

D. If the current optical power difference between the active and standby channels exceeds the "main and standby channel difference threshold (dB)", the system will initiate protection switching.

正确答案：C

问题 #9

The ECC protocol uses the network element ID as the unique identification of the network element. When NCE identifies different network elements in the interface and database, it also uses the network element ID as the keyword for retrieval.

A. Truecorrect

B. False

正确答案：A

问题 #10

What operation does the PROG indicator of the NG WDM device board blink rapidly (green) indicate?

A. Single board hardware failure

B. Business is not working properly

C. There is an important alarm on the board

D. Write FLASH operation or software loading in progresscorrect

正确答案：D

问题 #11

Regarding the description of OSS, which is wrong?

A. The network layer of the OSS is above the NMS, and the management of network element devices is generally implemented through the NMcorrect

B. The OSS system is mainly used to improve the work efficiency of equipment maintenance personnel

C. OSS system (Operation Support System) refers to a software system that provides operators with functions such as communication equipment performance management, inventory management, business management, and fault management.

D. The U2000 supports multiple northbound interfaces such as SNMP, TL1, XML, and DCORBA, which can realize rapid integration with the operator's OSS system.

正确答案：A

问题 #12

Which of the following protections in microwave equipment does not require dual slots?

A. SD

B. FD

C. HSBcorrect

D. SD+FD

正确答案：C

问题 #13

Which of the following services has the smallest frame period?

A. ODU1

B. ODU0

C. ODU2

D. ODU3correct

正确答案：D

问题 #14

Which of the following descriptions about optical line protection is wrong?

A. Optical line protection is double-ended switching. In the case of a single optical fiber interruption, there will be no inconsistency in sending and receiving routes.correct

B. Use the OLP board to configure optical line protection. The RI1/T01 optical port of the 0LP board must be working, and the RI2/T02 optical port must be protection.

C. OLP board switching is only related to the received optical power

D. When protecting optical lines, use the dual-feed and selective-receiving function of the OLP single board to protect the line fibers between adjacent sites using separate routes

正确答案：A

问题 #15

Which of the following ROADW boards contains the core component WSS?

A. TD20

B. RDU9

C. WSD9

D. RMU9

正确答案：C

问题 #16

Which of the following description is wrong about the content of the formula for calculating the maximum line rate (N=Ratc/((L+7+1+M)x8))?

A. L is in standard Ethernet frame length with a minimum value of 64Bytes

B. "8" outside the brackets is 1 Byte containing 8 Bits

C. M is the frame gap, and the minimum IFG (minimum frame gap) is 8 bytes.

D. Rate indicates the line rate of the physical layer. If the device port is FE, then Rate=100Mbit/s.

正确答案：C

问题 #17

Which of the following description of the 100G mixed transmission system is wrong?

A. Coherent and non-coherent signals (10G and 40G ODB will affect each other, resulting in a sharp drop in performance, and isolation bands are necessary)

B. 40G DQPSK and coherent signals will not affect each other without isolation band

C. 10G starts from a short wavelength, and the isolation band can be filled with 40G DQPSK wavelength

D. The cost of mixed transmission is related to the number of transmission spans and the width of the isolation bandwidth, and has nothing to do with the FEC encoding methodcorrect

正确答案：D

问题 #18

The technology of using local oscillator lasers of the same frequency to interfere with the received optical signal, and recovering the amplitude, phase and polarization state information from the received signal is called coherent receiving technology.

A. Truecorrect

B. False

正确答案：A

问题 #19

OptiX OSN 1800 is a compact multi-service optical transmission platform. Which of the following descriptions is wrong?

A. Does not support 158802 transmission, does not support external time signal accesscorrect

B. The maximum rate of single channel is 10 Gbit/s (OTU2)

C. The OptiXOSN 18001 box provides a total of 4 service board slots

D. The OptiX OSN 180011 box provides a total of 8 service board slots

正确答案：A

问题 #20

In the process of equipment installation, which of the following statements are wrong?

A. Wear anti-static gloves or an anti-static wrist strap before touching the device, holding the plug-in board, single board, ICA chip, etc.

B. Inside the cabinet, the binding interval of the cable buckle/fiber binding band of the optical fiber shall not exceed 250mm, and the binding interval of the cable buckle of the user cable shall not exceed 200mm

C. In order to dissipate heat, the empty slots on the network element do not need to be inserted with filler panelscorrect

D. When plugging and unplugging a single board with connecting cables or pigtails on the panel, unplug the connecting cables or pigtails first, and then plug in and out

正确答案：C

问题 #21

During the U2000 dual-system installation and commissioning, the operations that can be performed by the ossuser user are?

A. When you forget the password or the password expires and you cannot log in to dbuser, you can log in to the operating system as the ossuser user, and use "#passwd dbuser" in the terminal to change the password

B. When the U2000License file is modified to the DOS format, you can log in as the ossuser user. B executes the dos2unix command to convert the U2000License file format from the DOS format to the UNX format.

C. Modify the password of the admin user who logs in to the vcs client

D. On the Solaris or SUSE Unix platform, if you cannot log in to the graphical desktop, you can log in as the ossuser user and use the command line to restore the binary mode databasecorrect

正确答案：D

问题 #22

The indicator light of OptiXtrans E6600 LOSn is red and blinks once every 3 seconds. Which of the following is it?

A. The optical port of the single board reports the R_LOS alarm

B. The optical port of the single board reports the MS_RDI alarmcorrect

C. The board is not in place

D. The optical module is not in place

正确答案：B

问题 #23

AGC can solve a multi-wavelength WDM system. When some wavelength signals are lost, due to gain competition, its energy will be transferred to those signals that are not lost, making the power of other wavelengths higher.

A. Truecorrect

B. False

正确答案：A

问题 #24

For NG-SDH equipment equipped with dual main control boards, when the main control board is upgraded, which of the following statements is correct?

A. After upgrading the standby main control board first, the upgrade of the original active main control board can be completed as long as the main control board is switched through

B. Upgrade the active main control board first, and then upgrade the standby main control boardcorrect

C. Complete the upgrade of the standby main control board first, then perform a hard reset on the current active main control board to make it active and standby switchover, and then upgrade the current active main control board

D. First upgrade the active main control board and then upgrade the standby main control board in the same way

正确答案：B

问题 #25

Create a port-exclusive PWE3 service and find that the target port is not displayed. Which of the following descriptions about the cause of this phenomenon is correct?

A. The port Tag ID is configured as Tag Aware

B. The DCN is enabled on the terminal

C. Enable MPLS TE

D. The port is configured with an undeployed PWE3 service port

正确答案：D

问题 #26

The protection channel of the 1+1 linear multiplex section can be configured with additional services.

A. Truecorrect

B. False

正确答案：A

问题 #27

The instrument test method is generally used to eliminate external problems of transmission equipment and docking problems with other equipment.

A. Truecorrect

B. False

正确答案：A

问题 #28

The pointer is used for alignment. Indicates the starting position of the VC in the corresponding AU or TU. In this way: the corresponding VC can be correctly removed from the STMN, and then the VC and C packages are divided into separate low-rate signals, such as PDH: That is to say, the low-rate tributary signal can be discarded directly from the STMN signal.

A. False

B. True

正确答案：B

问题 #29

The gain of the OAU single board is 23db, and 1% of the total output power of the OAU single board is used for MON detection. Now the output optical power of the MON port is tested to be - 8dbm, and the input optical power of the IN port of the OAU single board is?

A. -11dbmcorrect

B. -13dbm

C. -15dbm

D. -21dbm

正确答案：A

问题 #30

The lower the noise figure of the amplifier, the less noise is introduced by this amplifier.

A. TRUE

B. FALSE

正确答案：A

查看更多题库 »