CCDP系列认证章节练习(2019.05.07)

单项选择题
A virtual storage area network (VSAN) is a collection of ports from a set of connected Fibre Channel switches, that form a virtual fabric. Which technology allows centralized storage services to be shared across different VSANs?（）
A.IVR
B.FSPF
C.FICON
D.SANTap
单项选择题
Which enterprise caching mode eliminates the need for Layer 4 switches or WCCP enabledrouters to intercept user requests？（）
A. transparent
B. proxy
C. reverse proxy
D. direct
单项选择题
A company is using a multi-site centralized call processing model. Which feature ensures that the remote site IP phones will still have limited functionality given a WAN outage?（）
A.Call Admission Control
B.TAPI
C.MGCP
D.SRST
单项选择题
In which tunnel-less VPN topology do group members register with a key server in order to receive the security association necessary to communicate with the group?（）
A. Easy VPN
B. GRE tunneling
C. Virtual Tunnel Interfaces
D. DynamicMultipoint VPN
E. Group Encrypted Transport VPN
单项选择题
Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual （counter-rotating） ring topology？（）
A. DTP
B. RPR
C. SDH
D. CWDM
E. DWDM
单项选择题
What is the recommended radius of a cell for a voice-ready wireless network？（）
A. 6 dBm
B. 19 dBm
C. 5 dBm
D. 7 dBm
多项选择题
You are the Cisco Network Designer in Cisco.com. Which signal and noise values will result in thebest phone communication with an access point？（）
A. signal strength 5dBm
B. signal strength 6dBm
C. noise level 4dBm
D. noise level 5dBm
多项选择题
SCSI interfaces provide for faster data transmission rates (up to 80 megabytes per second) than standard serial and parallel ports. In addition, you can attach many devices to a single SCSI port, so that SCSI is really an I/O bus rather than simply an interface Which two statements about SCSI are true?（）
A. The bus is limited to 64 devices.
B. It is a full-duplex serial standard.
C. It is a half-duplex serial standard.
D. It allows up to 320 MB/s of shared channel bandwidth.
单项选择题
What amount of cell overlap ensures smooth roaming for wireless endpoints?（）
A.5；10%
B.10；15%
C.15；20%
D.20；25%
单项选择题
Your MPLS implementation is currently using internal backdoor links. What can you do to minimize the impact of having these links？（）
A. use BGP as the CE-PE routing protocol
B. use OSPF as the CE-PE routing protocol
C. use EIGRP as the CE-PE routing protocol
D. use the SP to redistribute routes as external routes for OSPF and EIGRP
E. use route redistribution at each location to ensure external routes are imported into the IGP