640-861 試験問題を無料オンラインアクセス

Which two strategies need to be executed to avoid security threats to which this VoIP deployment can be vulnerable? (Choose two.)

• A.Implement VoIP performance analyzers.
• B.Subject your network to routine maintenance, take regular backups, do security checks, and install antivirus software.
• C.Deploy servers that will act as the gatekeeper or voice gateways.
• D.A regular VoIP network is not under security threats that normally occur on a dta network, so no action is needed.
• E.Run only standard software applications, which are less vulnerable to virus attacks or other security threats.
• F.VoIP networks are given high priority due to the nature of the traffic. Security is not an action item *missing*

When employing a VPN solution, which types of threats should you be concerned about? (Select all that apply.)

• A.Internet Viruses.
• B.IP Spoofing.
• C.Denial of Service (DoS) attacks.
• D.Network mapping.
• E.Data confidentiality.
• F.Distributed Denial of Service (DDoS) attacks.

What are two technical constraints imposed by Cisco Car on this network design project? (Choose two.)

• A.the POS system
• B.the central site Ethernet LAN
• C.24x7 availability
• D.improved employee communication through instant messaging

Which of the following are technical constraints imposed by Cisco Video on this network design project? (Choose all that apply.)

• A.The wireless Internet connection.
• B.The Point-of-Sale (POS) system.
• C.Improved employee communication through instant messaging.
• D.The central site Ethernet LAN.
• E.24/7 availability of the E-Commerce Web site.

For the network backbone of a large campus environment, what are three advantages of a multilayer core switch design over a Layer 2 core switch design?
(Choose three)

• A.Large scalability potential
• B.Single VLAN implementation in the backbone
• C.Reduced distribution router peering
• D.Broadcast control in the backbone
• E.Evenly distributed backbone traffic