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NEW QUESTION 257
Execute the displa interface tunnel command on a router to display the information of the GRE tunnel interface as follows:
<Router> displa interface Tunnel O
Tunnelo current state: UP
Line protocol current state: UP
Description: Tunnelo Interface
The Maximum Transmit Unit is 1476
Internet Address is 192.1.2.1/24 Primar
Encapsulation is TUNNEL , agg regation ID not set
Tunnel source 10.1.11.1 , destination 10.1.13.1
Tunnel keepalive enable , Period ( 10 s ) , Retries ( 3 )
Tunnel protocol/transport GRE/IP
GRE ke disabled
Checksumming of GRE packets disabled
Last 300 seconds input: 0 btes/sec , 0 packets/sec
Last 30 0 seconds output: 0 btes/sec , 0 packets/sec
4 packets input , 72 btes
0 input error
1 packets output , 24 btes
0 0utput error
It can be known from the above information.( Choose one or more )
- A. The tunnel interface is in the UP state, and the MTU is 1476 bytes
- B. tunnel channel source lP address 192.1.1.1
- C. tunnel channel does not start verification, verification can not start
- D. The Keeplive function is enabled on the tunnel interface .Once the router does not receive the Keeplive message from the other party within 30s , the tunnel is considered unavailable.Although the tunnel interface is still in the UP state, the tunnel interface is a static route for the outgoing interface Will disappear from the routing table ;
Answer: A,C
NEW QUESTION 258
In BGP MPLS VPN group on the public network device using displa mpls ldp session command command checks LDP when establishing the neighbor condition, the neighbor is found Operational , said next ______ .
- A. The LDP neighbor with this neighbor has been successfully established and can exchange label information
- B. Label interaction has been completed with this neighbor
- C. and the neighbor can not build stand LDP neighbor relationship, because the end is not so able LDP protocol
- D. and the neighbor can not build stand LDP neighbor relationship, because for the LDP does not match the parameters
Answer: A
NEW QUESTION 259
Which of the following codes has the lowest requirement for broadband?
- A. G723
- B. G729
- C. G711
- D. G726
Answer: A
NEW QUESTION 260
In the EPON system, the port that the ONU device connects to the user is
- A. OLT
- B. NNI
- C. UNI
- D. ONU
Answer: C
NEW QUESTION 261
In the BGP MPLS VPN network, which of the following functions need to be supported by the P device ?
- A. MPLS
- B. MPLS LDP
- C. Road multiple instances of the protocol
- D. MP -BGP
Answer: A,B
NEW QUESTION 262
A VoIP network using the H.323 protocol is interconnected with the PSTN network.Which of the following components must be included in the VoIP network to ensure that users can make local calls from the VoIP network
- A. terminating end
- B. net off
- C. MCU
- D. Shou
Answer: A,B
NEW QUESTION 263
In the BGP MPLS VPN networking, the correct statement about the relationship between labels is _______ .
- A. Between public network devices, private network packets usually have two layers of MPLS labels, of which the outer layer is the public network label
- B. Between PE and CE devices, private network packets have only one MPLS label, which is a private network label
- C. MPLS After enabling the penultimate hop, the penultimate and final message hop between public network equipment is only one layer MPLS label, private label is
- D. Private network labels cannot be identified on all PE and P devices
Answer: A,C
NEW QUESTION 264
The following statements about PKI workflow are correct.
- A. permit book application made by the entity
- B. solid body needs to revoke the certificate RA application
- C. solid body identity reviewed by RA completed
- D. Certificate book by the CA issued
Answer: A,C,D
NEW QUESTION 265
Among multiple VRF technologies, one VRF will have ______ .
- A. independent stand routing table
- B. independent stand routing protocol process
- C. independent stand router CPU
- D. independent stand physical or logical interface
Answer: A,B,D
NEW QUESTION 266
In the GRE encapsulation of IP over IP , IP uses the protocol number ____ to mark the GRE header.
- A. 47
Answer: A
NEW QUESTION 267
A PBX of a company in Beijing was originally connected to the operator's telephone network through an analog line.In order to expand the capacity, it was proposed to apply for a digital line from the operator . ______ is the most economical choice.
- A. E1
- B. ATM
- C. T1
- D. E&M
Answer: A
NEW QUESTION 268
Which of the following statements about SOA and IToIP is correct is ____ .
- A. SOA solutions to the requirements of IT infrastructure integration, unified web-based technology to build IT infrastructure platform.
- B. The IToIP solution embodies the core idea of SOA .
- C. SOA is based on the network, eliminates the information gap caused by heterogeneous systems, integrates various services such as storage, security, and multimedia, and realizes the componentization and resourceization of IT infrastructure.
- D. IToIP allows flexible, fast and efficient construction of enterprise intelligent applications, and can quickly adapt to changes in enterprise business processes.
Answer: B,D
NEW QUESTION 269
an LSR transport line DU under the label distribution mode, ordered label control mode, the following statements is correct _______ .
- A. The LSR long for the upstream device receives a FEC label allocation can request that the FEC allocation label
- B. If the LSR is the most downstream device of a certain FEC , it can assign labels to the FEC without waiting for the upstream label allocation request
- C. The LSR receives a downstream device for an FEC to label mapping consumption when messages can for FEC distribution labels, without waiting for the upstream label allocation request
- D. The LSR received on tour LSR for a FEC requesting label allocation, and the LSR is the FEC of the most if the downstream device may be the FEC assigned tag
Answer: B,C
NEW QUESTION 270
In the basic configuration of L2TP in independent LAC mode , the description of the tunnel verification function is correct.
- A. tunnel channel request can be verified by the LAC initiated
- B. lack of provincial cases, tunnel authentication is disabled
- C. lack of provincial cases, tunnel authentication is enabled.
- D. tunnel channel request can not be verified by the LNS initiated
Answer: A,C
NEW QUESTION 271
According to Nquist 's theorem, the telephone system samples human voice ______ times per second in order to fully represent the characteristics of the voice signal.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 272
The process of LDP session establishment is
- A. Jian Li TCP connection Neighbor Discovery > to establish the session > session maintenance
- B. Jian Li session > ND > establish a TCP connection > session maintenance
- C. neighbor living found > establish a session > establish a TCP connection > session maintenance
- D. neighbor living found > establish a TCP connection > to establish the session > session maintenance
Answer: C
NEW QUESTION 273
Which of the following descriptions of traditional telephone systems are correct?
- A. electrically telephone user connected to the ring down PBX or central office switches, are connected by a telephone subscriber loop and PBX a line between a pair comprising a TIP and Ring , wherein Qing ground, TIP access PBX negative electrode
- B. electrically telephone dial tone and positive tone, as there are peer PBX or central office switch provides complete voltage
- C. pass the real machine is FXS ordinary telephone device, via an ordinary telephone connected to a central office switch dialing FXO interface
Answer: B
NEW QUESTION 274
Which of the following statements about the access network is correct is _____
- A. Compared with backbone network, access network is often the bottleneck of network transmission speed
- B. The access network can also be Ethernet
- C. access network typically includes a user transmission system, terminal multiplexers or network,
- D. access into generally refers to the connection between the user and the network operator of the network close to the user central office
Answer: A,B,C,D
NEW QUESTION 275
In the conservative label retention mode, illustrated by networking, LSR2 can keep what stage LSR needle to 20.0.0.1/24 tag information that route ?
- A. LSR4
- B. LSR1
- C. LSR5
- D. LSR3
Answer: D
NEW QUESTION 276
In the BGP MPLS VPN networking, the following description about the private network label and the public network label is correct _______ .
- A. well different label distribution protocol network and the private network tag label, the label is typically a public network LDP allocation protocol, and the label by the private network MP-BGP distribution protocol
- B. The format of the public network label is different from that of the private network label
- C. The value of the public network label and the private network label carried in the message must be different
- D. The public network label is dynamically allocated, while the private network label is statically allocated
Answer: A
NEW QUESTION 277
VPN that Which of the following types of RT configuration is wrong ?
- A. need to isolate the private network user belongs to two VPN of RT attributes which Import Target attributes and Export Target intersection exists between attribute
- B. required to isolate the private network user belongs to two VPN of RT attributes which Export Target attributes and Export Target intersection exists between attribute
- C. needs to be exchange of visits of two private network user belongs VPN of RT attribute, its Import Target property and Import Target intersection exists between property
- D. need to exchange visits of two private network user belongs VPN 's RT attribute, its Import Target property and Export Target intersection exists between property
Answer: A
NEW QUESTION 278
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