多項選擇題Which of the following contribute to congestion on an Ethernet network?（）

A. Use of full duplex mode.
B. Creation of new collision domain.
C. Creation of new broadcast domain.
D. Addition of hub to the network.
E. Use of switches in the network.
F. Amount of ARP or IPX SAP traffic.


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1.多項選擇題Which of the following correctly describe steps in the OSI data encapsulation process?（）

A. Transport layer divides a data stream into segments & adds reliability & flow control information
B. Data link layer adds physical source & destination address & an FCS to the segment
C. Packets are created when the network layer encapsulate a frame with source & destination host address& protocol related control information
D. Packets are created when the network layers adds layers 3 address & control information to a segment
E. The presentation layer translated bits into bits into voltages for transmission across the physical link

2.單項選擇題What does a configuration Register Setting of 0x2105 indicate to the Router? （）

A. The Boot IOS Code is Located in the NVRAM.
B. Check NVRAM for boot system Commands.
C. Bypass NVRAM Configurations.
D. Boot the IOS Code Located in ROM.
E. Perform a Password Recovery.
F. Bypass The Code In ROM.

3.單項選擇題All WAN links is side the TestKing.com network use PPP with for authentication security. Which command will display the CHAP authentication process as it occurs between two routers in the network?（）

A. show CHAP authentication
B. show interface serial 0
C. debug PPP authentication
D. debug CHAP authentication
E. show PPP authentication CHAP


4.多項選擇題Which of the following if addresses can be assigned to host devices?（）

A. 205.7.8. 32/27
B. 191.168. 10. 2/23
C. 127.0.0.1
D. 224.0.0.10
E. 203.123.45. 47/28
F. 10.10.0.0/13

5.單項選擇題How many usable sub network and usable hosts per subnet result in the network address 201.105.13.0 is sub netted with a mask of /26? （）

A. 64 network and 4 hosts
B. 4 network and 64 hosts
C. 2 network and 62 hosts
D. 62 network and 2 hosts