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CCNA系列認(rèn)證CCNA(650-195)單項(xiàng)選擇題每日一練(2019.01.13)

單項(xiàng)選擇題
Layer 3 （the network layer） provides connectivity and path selection between two host systems that may be located on geographically separated networks. Which two devices operate at the network layer？（）
A. application
B. hub
C. switch
D. bridge
E. router
單項(xiàng)選擇題
All-in-one UTM security gateways are starting to displace routers in many small business networks. What does UTM stand for？（）
A. United Threat Monitor
B. Universal Threat Manager
C. Unified Threat Management
D. Ultimate Threat Monitoring
單項(xiàng)選擇題
Wireless components must work together for interoperability and performance. Which standard has specifications that are 2.4 GHz， 54 Mb/s， and a range of 150 feet？（）
A. 802.11n
B. 802.11b
C. 802.11a
D. 802.11g
單項(xiàng)選擇題
How does the Cisco Small Business Pro Service differ from the Cisco Small Business Pro warranty？（）
A. device-level warranty
B. Cisco Small Business Pro products only
C. speed of hardware replacement
D. access to Cisco Small Business Support Community
單項(xiàng)選擇題
Which Cisco Small Business router features a 4-port Fast Ethernet integrated switch but not wireless capabilities？（）
A. RVS4000
B. RVL200
C. RV016
D. RV082

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