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Q76. (Topic 4)
Judgment: When the package frame relay protocol, the default frame encapsulation format is IETF.
A. True
B. False
Answer: A
Q77. (Topic 4)
With static routing protocols, the advantages of dynamic routing
A. less bandwidth
B. simple
C. router can automatically discover the network topology changes
D. router can automatically calculate a new route
Answer: C,D
Q78. (Topic 4)
The following configuration command in Frame Relay represents what the meaning of 30 ().
[RTB-Serial0] fr map ip 10.1.1.2 30
A. mask
B. DLCI
C. Cost
D. Weight
Answer: B
Q79. (Topic 4)
Below the level of segmentation of RIP is the correct description
A. Split horizon technique is used to solve the problem of routing from the ring, the main idea is not received from a neighbor re-routing information sent to this neighbor from the interface
B. level of segmentation between the two routers can only solve the problem of self-loop for two or more routers between the self-loop problems are powerless
C. RIP level of segmentation is a side effect, and sometimes may cause some routers are not the right route
D. In the VRP, the horizontal split open by default, if necessary, can be configured to shut down
Answer: A,B,C,D
Q80. (Topic 4)
PPP protocol field in the frame information field that indicates the type of protocol used, following which a value used to represent the information domain is an IP packet
A. 0x0021
B. 0x8021
C. 0x8821
D. 0x8863
Answer: A
Q81. (Topic 2)
C class IP address of the network address for the first three octet, the first byte to () started.
A. 101
B. 100
C. 110
D. 10
Answer: C
Q82. (Topic 3)
Judge: Trunk port sent to the peer device must be tagged frame.
A. True
B. False
Answer: B
Q83. (Topic 4)
Developed by the IETF, the principle itself is more complex protocol, using a wide range of inter-domain routing protocol ().
A. BGP
B. OSPF
C. ISIS
D. RIP
Answer: A
Q84. (Topic 4)
To configure X.25 on an interface you need to do the following
A. The interface package
B. Set X.25 mode
C. Set the X.121 address of the interface
D. Configure X.25 map
Answer: A,B,C,D
Q85. (Topic 4)
in the PPP, when the communication of both ends of the physical line activation is detected, it will not be available from link to link establishment phase transition stage, at this stage is mainly through the () link protocol configuration parameters
A. IP
B. DHCP
C. LCP
D. NCP
Answer: C
Q86. (Topic 1)
Divided by the network topology, network can be divided into
A. Bus
B. Star
C. Tree
D. Ring
E. grid
Answer: A,B,C,D,E
Q87. (Topic 2)
A company to apply to a Class C IP addresses, but to connect six subsidiaries, the largest subsidiary, has 26 computers, a segment in each subsidiary, the subnet mask should be set
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.255.192
D. 255.255.255.224
Answer: D
Q88. (Topic 3)
Ethernet auto-negotiation function from () to achieve, so do not use special data packet.
A. Application Layer
B. network layer
C. Data Link Layer
D. PHY
Answer: D
581. (Topic 3)
HDLC method used for transparent transmission of bit-stream ().
A. bit stuffing technique
B. Special Characters
C. Data Length field
D. None of the above
Answer: A
Q89. (Topic 1)
: 90
ADSL used for downlink data transmission frequency band is
A. 26KHZ ~ 138KHZ
B. 138 KHZ ~ 1104 KHZ
C. 26 KHZ ~ 1104 KHZ
D. 138 KHZ ~ 2200 KHZ
Answer: B
Q90. (Topic 2)
Judge: Hub of the works: an interface received from any non-selective data frames transmitted to any other port
A. True
B. False
Answer: A