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خذ اختبارات أخرى عبر الإنترنت
السؤال #1
Which of the following phenomena does not exist in analog networks, but only in digital wireless networks?
A. Rayleigh fading
B. Congestion
C. Fast fading
D. Intersymbol interferencecorrect
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اجابة صحيحة: D
السؤال #2
（ Single) What is the command to support local loopback on the MA5600 ADSL port?
A. Loopback
B. loop - detect
C. atm - ping
D. ring check
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اجابة صحيحة: A
السؤال #3
In the evolution of EPON to 10 G EPON, a smooth transition is achieved at the local level by adding WDM WDM modules, and ODNs coexist
A. True
B. False
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اجابة صحيحة: B
السؤال #4
A total of 100 multicast users on the OLT are watching 20 multicast programs. If each multicast program occupies a bandwidth of 2M, how much multicast traffic does the OLT uplink port currently have?
A. 200M
B. 100M
C. 40Mcorrect
D. 50M
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اجابة صحيحة: C
السؤال #5
The OLT can directly copy the priority of the user message as the priority of forwarding the message upwards, and also supports direct local configuration
A. Truecorrect
B. False
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اجابة صحيحة: A
السؤال #6
In general, the third-order intermodulation index of the mechanical downtilt antenna is better than that of the electric adjustment antenna.
A. True
B. Falsecorrect
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اجابة صحيحة: B
السؤال #7
Which field of the PPP frame is used to identify whether the carried packet is IP or IPX?
A. Control domain
B. Flags domain
C. Protocol Domaincorrect
D. Frame check field
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اجابة صحيحة: C
السؤال #8
The range of class D multicast addresses is from 224.0.0.0 to 238.255.255.255.
A. Ture
B. Falsecorrect
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اجابة صحيحة: B
السؤال #9
The call drop rate in a certain cell is relatively high. Analysis of the original call drop measurement performance statistics shows that the main cause of call drop is radio link failure (CONN FAIL). Which network parameters in this cell may solve the problem? (Multiple choices)
A. Adjust SACCH multiple frame parameterscorrect
B. Adjust the radio link failure counter parameterscorrect
C. Adjust T200 parameters
D. Adjust N200 parameters
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اجابة صحيحة: AB
السؤال #10
The complete SIP message interaction process will contain multiple request and response messages, and the sIP message header field can be used to describe what the specific solution corresponding to the current response message is
A. Csea
B. CaLL - ID
C. First line
D. Message body
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اجابة صحيحة: A
السؤال #11
The success rate of outbound BSC handover in a certain cell is relatively low, and the number of outbound handover attempts between BSCs in the traffic statistics is almost equal to the number of outbound handovers between BSCs. What is the possible reason for the BSC handover failure in this cell?
A. The target cell is congested
B. The CGI of the target cell is not defined in MS C
C. The carrier frequency hardware of the target cell is faulty, and the TCH channel cannot be activated
D. The wireless interface of the target cell has severe interferencecorrect
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اجابة صحيحة: D
السؤال #12
During the handover process, which of the following signaling is unique to asynchronous handover?
A. HANDOVER DETECTION
B. PHYSICAL INFORMATIONcorrect
C. HANDOVER COMMAND
D. HANDOVER COMPLETE
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اجابة صحيحة: B
السؤال #13
The automatic discovery methods provided by sight include network segment method, ARP method and routing method. At the same time, it supports creating the network segment or IP address of the device that does not need to be connected as an exclusion list. During self-discovery of devices, the network segment or IP address configured in the exclusion list is automatically skipped.
A. Truecorrect
B. False
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اجابة صحيحة: A
السؤال #14
Which of the following data is needed in the planning of the number of PDCH channels in the GPRS/EDGE system? (Multiple choices)
A. Number of mobile subscriberscorrect
B. GPRS/EDGE User Penetration Ratecorrect
C. Single-user data trafficcorrect
D. GOS for data servicescorrect
E. Average traffic volume when users are busy
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اجابة صحيحة: ABCD
السؤال #15
Which of the following statements about dBi, dBd, dBc are wrong? (Multiple choice)
A. dBi and dBd are the value of test gain (power gain), both are relative valuescorrect
B. The reference base of dBi is a dipole, and the reference base of dBd is a dipole omnidirectional antennacorrect
C. If antenna A is 12dBd and antenna B is 19dBd, it can be said that A is 2dBc smaller than Bcorrect
D. dBc is a unit that expresses the relative value of power, which is exactly the same as the calculation method of dB
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اجابة صحيحة: ABC
السؤال #16
In the FTTX network, which of the following principles is wrong when planning data for broadband services?
A. If the outer labels of different PON ports are different, the inner labels can be the same
B. The same PON port is marked with different outer labels for different services
C. If the outer labels of different PON ports are the same, the inner labels cannot be the same
D. The network management should use QinQ VLANcorrect
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اجابة صحيحة: D
السؤال #17
When the VSWR is 1.4, what is the return loss?
A. 14dB
B. 15
C. 16
D. 17
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اجابة صحيحة: B
السؤال #18
Which of the following descriptions about the type of Ethernet link aggregation group is wrong?
A. When all connected devices support the LACP protocol, it is recommended to use LACP aggregation
B. Static aggregation needs to run the LACP protocol
C. The aggregation group types supported by the device include manual aggregation and static aggregation
D. Manual aggregation needs to run the LACP protocolcorrect
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اجابة صحيحة: D
السؤال #19
(Single-choice) An IPTV user reflects that the TV cannot be watched, open the debug switch on the OLT side, and the debug printing information is as follows: huawei( config). This can be judged by the results of the query
A. AThe poN port multicast bandwidth is insufficient
B. BThe user does not have permission to watch the show
C. CIGMP Sakamoto Fussel
D. DUser bandwidth validation failed
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اجابة صحيحة: D
السؤال #20
Which of the following options is wrong in the description of NCE-FAN HSI service configuration?
A. For template delivery, the delivery operation execution time can be set according to business requirements
B. In the line template, the actual configurable range of T-CONT is determined by the capabilities of the terminal equipment
C. The wrong S-VLAN configuration on the service virtual port can be changed directly without deleting and rebuilding
D. When querying the ONT status, if the matching status is displayed as mismatch, the services carried on the ONT cannot be communicated
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اجابة صحيحة: C
السؤال #21
A 2-frequency point configuration cell is configured with 2 SDCCHs. On the premise that half rate is not enabled, what is the maximum TCH traffic that can be carried theoretically?
A. 12Erl
B. 13Erlcorrect
C. 14Erl
D. 15Erl
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اجابة صحيحة: B
السؤال #22
Generally speaking, which of the following parameters may be related to the ability to absorb traffic in the 1800 cell of the dual-frequency network? (Multiple choice)
A. MBR (Multiple Frequency Report)correct
B. CELL Layer (cell level)correct
C. Tx -integer (number of extended transmission slots)
D. CRH (cell reselection hysteresis)correct
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اجابة صحيحة: ABD
السؤال #23
In the GSM system, each user is assigned a unique IMSI (International Mobile Subscriber Identity) for user identification. IMSI consists of which of the following parts?
A. MCC (Mobile Country Code), MNC (Mobile Network Number) and NMSI (National Mobile Subscriber Identity) in IMSI
B. MCC (Mobile Country Code), MNC (Mobile Network Number) and MSIN (Mobile Subscriber Identification Number) in IMSIcorrect
C. MCC (Mobile Country Code), MNC (Mobile Network Number) and SN (Subscriber Number) in IMSI
D. MCC (Mobile Country Code), MNC (Mobile Network Number) and MSRN (Mobile User Roaming Number) in IMS
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اجابة صحيحة: B
السؤال #24
Since the MCS 1-4 coding schemes in the EDG system also use GMSK modulation, these four coding schemes have the same data transmission rate as the CS1-4 coding schemes in the GPRS system.
A. True
B. Falsecorrect
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اجابة صحيحة: B
السؤال #25
When the ADSL/ADSL2+ line conditions are better, what parameters can be adjusted to increase the transmission rate?
A. Change the port channel mode to "fast"correct
B. Change the port channel mode to "Interleaving" and increase the interleaving delay
C. Reduce the target noise margincorrect
D. Improve the target noise margin
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اجابة صحيحة: AC
السؤال #26
Which of the following conditions will not trigger GPON Type B single-homing protection switching?
A. Multiple ONU are attached to the optical splitter, and a single ONU is offlinecorrect
B. Trunk fiber break
C. OLT active PO port fault
D. Deterioration of trunk optical cable line quality
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اجابة صحيحة: A
السؤال #27
Which of the following statements about SSH connection is incorrect?
A. SSH can be applied to remote encrypted connections and file transfer encryption
B. The SSH protocol can encrypt all transmitted data, effectively preventing information leakage during remote management QUESTION NO :
C. From the perspective of the client, SSH provides two levels of security verification
D. The SSH protocol works at the network layercorrect
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اجابة صحيحة: D
السؤال #28
In the GPRS/EDGE system, when the network is running in mode II, both packet paging and circuit paging messages are delivered through the CCCH channel.
A. Truecorrect
B. False
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اجابة صحيحة: A
السؤال #29
The number of users under the OLT can also determine whether the VLAN adopts single-layer or double-layer VLAN. When the number of users is small, a single-layer VLAN can be used. When the need to distinguish services and the number of users is less than (), a double-layer VLAN must be used.
A. 2K
B. 4Kcorrect
C. SK
D. 1K
عرض الإجابة
اجابة صحيحة: B
السؤال #30
When the invitation message sent by user A reaches user B after passing through servers C, D, and E, the server address recorded in the VIA field in the message received by user B from top to bottom is:
A. C->D->E
B. E->C->D
C. E->D->Ccorrect
D. C->E->D
عرض الإجابة
اجابة صحيحة: C

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