[单项选择]Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）
A. Client-based software, such as CiscoSoftPhone
B. Voice gateways, such as the Cisco VG248 Analog Phone Gateway
C. Call-management hardware and software, such as CiscoCallManager
D. Advanced call-handling software, such as Cisco Unity

[单项选择]Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）
A. Advanced call-handling software, such as Cisco Unity
B. Call-management hardware and software, such as CiscoCallManager
C. Client-based software, such as CiscoSoftPhone
D. Voice gateways, such as the Cisco VG248 Analog Phone Gateway

[多项选择]Which three IP multicast address related statements are true?（）
A. Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3
B. Because they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget her
C. Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1
D. Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers
E. The a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses
F. Multicast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA

[多项选择]Which three IP addresses are valid multicast addresses?（）
A. 169.254.23.59
B. 223.254.255.254
C. 225.1.1.1
D. 227.43.34.2
E. 238.3.3.3
F. 249.1.2.3

[多项选择]Which three IP addresses can be assigned to hosts if the subnet mask is /27 and subnet zero is usable?（）
A. 10.15.32.17
B. 17.15.66.128
C. 66.55.128.1
D. 135.1.64.34
E. 129.33.192.192
F. 192.168.5.63

[单项选择]How can you control which local IP address the ERX uses when communicating with a RADIUS server?（）
A. radius update-source-address
B. radius calling-station-format
C. radius accounting server 10.13.7.55
D. radius authentication server 10.13.7.55

[多项选择]Which three IP multicast group concepts are true?（）
A. If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.
B. A router does not have to be a member of a multicast group to recei ve multicast data.
C. A router must be a member of a multicast group to send to the group.
D. A router does not have to be a member of a multicast group to send to the group.
E. If a packet is sent to a multicast group address, all members of the multic ast group will receive it.
F. A router must be a member of a multicast group to receive multicast data.

[多项选择]When a DHCP server is configured, which two IP addresses should never be assignable to hosts?（）
A. network or subnetwork IP address
B. broadcast address on the network
C. IP address leased to the LAN
D. IP address used by the interfaces
E. manually assigned address to the clients
F. designated IP address to the DHCP server

[单项选择]What is a method by which an IP interface can be assigned to a virtual router in a PPP over ATM environment？（）
A. profile
B. policylist
C. classifier ACL
D. LCP negotiation

[单项选择]A network IPS provides which of the following?（）
A. The layer 3 protocol on which other protocols like TCP and UDP communicate.
B. Enables the IPSec protocol on internal workstations.
C. Packet-based detection and prevention of network attacks.
D. Single mode IP communication for a fiber line between remote sites.

[单项选择]The process by which carbon dioxide and oxygen are transferred does not depend on_______.
A. the presence of nitrogen in the blood
B. the muscles of the thoracic cavity
C. the flow of blood
D. the moisture in the air sac linings

[多项选择]Network Security is a continuous process. Which three phases apply to this process?（）
A. Configure
B. Improve
C. Operate
D. Monitor
E. Secure
F. Troubleshooting

[单项选择]This new process, which is easily learned and operated, should be particularly______ to companies once put into effect.
A. advanced
B. favorite
C. advantageous
D. admirable

[单项选择]The ( ) process ascertains which risks have the potential of affecting the project and documenting the risks' characterist.
A. Risk Identification
B. Quantitative Risk Analysis
C. Qualitative Risk Analysis
D. Risk Monitoring and Control

[单项选择]During the boot process, which of the following files should be sued to control system initialization and start daemons and subsystems?（）
A. /etc/inittab
B. /etc/rc.boot
C. /etc/services
D. /etc/environment