为了帮助考生们复习好《思科认证：CCNA认证学科》，我们考吧网整理了一些关于思科认证：CCNA认证模拟试题，本次汇编的模拟试题希望对你的考试有所帮助，预祝你考试顺利

1. Refer to the exhibit. Host A is sending data to Host B. Once R2 determines that data from Host A must be forwarded to R1 to reach Host B, which layer of the OSI model will R2 use to address and build the frames destined for R1?

1) physical

2) data link

3) network

4) transport

5) session

6) presentation

2. What is the correct number of usable subnetworks and hosts for the IP network address 192.168.35.0 subnetted with a /28 mask?

1) 6 networks / 64 hosts

2) 14 networks / 32 hosts

3) 14 networks / 14 hosts

4) 30 networks / 64 hosts

3. Which subnet masks would be valid for a subnetted Class B address? (Choose two.) (5，6)

1) 255.0.0.0

2) 255.254.0.0

3) 255.224.0.0

4) 255.255.0.0

5) 255.255.252.0

6) 255.255.255.192

4. Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?

1) 172.16.128.0 255.255.255.224

2) 172.16.128.0 255.255.0.0

3) 172.16.128.0 255.255.192.0

4) 172.16.128.0 255.255.224.0

5) 172.16.128.0 255.255.255.192

5. What does the "10" in 10Base2 indicate about this version of Ethernet? (2)

1) The version uses Base10 numbering within the frames.

2) The version operates at a transmission rate of 10 Mbps.

3) Frames can travel 10 meters unrepeated.

4) The maximum frame length is 10 octets.

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2014年思科认证考试CCNA备考模拟试题汇总