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Q346.  (Topic 4) 

ATM header format in the virtual channel identifier field VPI and VCI virtual channel identifier field function is (). 

A. used to identify data types 

B. used to determine the order of priority to send 

C. Path Selection for 

D. for congestion control 


Q347.  (Topic 1) 

In the DNS query, the message is commonly used 






Q348.  (Topic 2) 

Ethernet physical media are used 

A. Coaxial 

B. twisted pair 

C. Cable 

D. V.24 cable 

Answer: A,B,C 

Q349.  (Topic 3) 

Definitions for the Ethernet sub-interface 0/1.1 VLAN100 members use the following configuration commands 

A. [Router-Ethernet0/1.1] vlan trunk vid 100 

B. [Router-Ethernet0/1.1] port dot1q vid 100 

C. [Router-Ethernet0/1.1] vlan dot1q vid 100 

D. [Router-Ethernet0/1.1] vlan default vid 100 


Q350.  (Topic 4) 

In a computer running Windows to configure the gateway, similar to the configuration in the router 

A. direct routes 

B. default route 

C. Dynamic Routing 

D. Host Routing 


Q351.  (Topic 1) 

: 127 

OSI Reference Model () function is to provide for the application layer data encoding and conversion functions, process the data format, data encryption. 

A. Presentation Layer 

B. session layer 

C. Network Layer 

D. Application layer 


Q352.  (Topic 4) 

Description of the routing table is correct 

A. next hop routing table is redundant, there is the interface can guide the packet forwarding 

B. route different sources, its priority is not the same 

C. the cost between different routing protocols have comparable values 

D. the cost between different routing protocols do not have comparable values 

Answer: B,D 

Q353.  (Topic 3) 

In the STP protocol, set all the switches are configured the same priority, the MAC address of switch 1 00-e0-fc-00-00-40, the MAC address of the switch 2 00-e0-fc-00-00 -10, the MAC address of the switch 3 00-e0-fc-00-00-20, the MAC address of the switch 4 is 00-e0-fc-00-00-80, is the root switch should be 

A. Switch 1 

B. Switch 2 

C. Switch 3 

D. Switch 4 


Q354.  (Topic 1) 

: 193 

Which of the following flow control is the way? 

A. confirmation (acknowledgement) technology 

B. caching (buffering) technology 

C. source quench packets (source quench messages) 

D. window mechanism (windowing) 

Answer: B,C,D 

Q355.  (Topic 1) 

: 61 

Description of network structure is correct 

A. fully connected grid network, the n (n-1) / 2 n physical links to connect devices 

B. All grid-connected network, if one link fails, it will not affect the whole system 

C. fully connected network robustness is better 

D. network topology drawback is high cost and difficult to implement 

Answer: A,B,C,D 

Q356.  (Topic 4) 

Which of the following routing protocols for IPv6 service 

A. RIPv 6 

B. RIPng 

C. OSPFv 2 

D. IS-ISv6 

Answer: B,D 

Q357.  (Topic 4) 

The following cell on the ATM UNI and NNI cell argument, which is correct (). 

A. contains the VPI field, but different lengths 

B. contains the VCI field, but different lengths 

C. Only UNI cell field containing GFC 

D. UNI and NNI cell cell of the same length, are 53 bytes 

Answer: A,C,D 

Q358.  (Topic 1) 

: 174 

OSI reference model merits 

A. complex network into simple components 

B. module allows engineers to focus on the design and development functions 

C. define the standard interface, the interactive multi-factory 

D. the complex network problem into small, simple problem, easy to learn and operate 

Answer: A,B,C,D 

Q359.  (Topic 1) 

: 97 

ADSL technology is applicable to (). 

A. long-range (greater than 2Km, less than 5Km) dispersed customer base 

B. medium distance (less than 1.5Km), more focused customer base 

C. close (less than 200M)-intensive customer base 

D. long-distance (greater than 15Km) a concentrated customer base 


Q360.  (Topic 2) 

Switch is working in the OSI Reference Model () equipment 

A. Physical Layer 

B. Data Link Layer 

C. Transport Layer 

D. Application layer