What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）

A . A command that can be entered in any configuration mode. B . A command that supports all protocols. C . A command that is implemented in all IOS versions. D . A command that is set once and affects the entire router. E . A command that is available in every release of IOS.

A . It creates a global address pool for all outside NAT transactions. B . It establishes a dynamic address pool for an inside static address. C . It creates dynamic source translations for all inside local PAT transactions. D . It creates a one-to-one mapping between an inside local address and an inside global address. E . It maps one inside source address to a range of outside global addresses.

A . to provide a mechanism to dynamically assign vlan membership to switch ports B . to allow traffic to be carried from multiple vlans over a single link between switches C . to allow native vlan information to be carried over a trunk link D . to provide a mechanism to manually assign vlan membership to switch ports E . to allow for managing the additions,deletions,and changes of vlans between switch

A . network-based application recognition （NBAR） B . authentication proxy C . stateful packet filtering D . AAA services E . proxy server F . IPS

A . disable Zone-Based Firewall as the two features are not compatible B . disable Cisco Express Forwarding as the two features are not compatible C . generate a certificate and export on Cisco.com to receive a signature update D . import the public RSA key from the Cisco IPS team that allows the router to verify that a signatureupdate （which was signed by this key） comes from Cisco

A . R1（config-route-at）# B . R1（config-route-map）# C . R1（config-it）# D . R1（config-vrf）# E . R1（config）# F . R1（router）#

A . The period of time in which virtual login attempts are blocked， following repeated failed login attempts B . The period of time in which virtual logins are blocked as security services fully initialize C . A period of time when no one is attempting tolog in D . The period of time between successive login attempt

A . MPLS Traffic Engineering B . Dynamic access-lists C . Authentication D . Receive ACL E . Unicast RPF

A . OSPF hello interval is 5 seconds B . OSPF hello interval is 1 second C . OSPF dead interval is 1 second D . OSPF dead interval is 5 seconds E . OSPF dead interval is 20 seconds F . OSPF hello interval is 0.2 second

A . Cisco IOS gateways provide services such as address translation and network access control for the devices on the network B . Cisco IOS gateways provide services such as bandwidth management and accounting C . Cisco IOS gateways provide media termination and signal translation between the public switched telephone network （PSTN） and IP networks D . Cisco IOS gateways provide zone management for all registered endpoints in the network

A . debug ip bgp updates B . debug ip tcp events C . debug ip bgp transactions D . debug ip tcp transactio

A .  To selectively apply drop actions to specific interfaces B .  To enable IOS to droptraffic for signatures configured with the Drop action C .  To support load-balancing configurations in which traffic can arrive via multipleinterfaces  D .  This is nota valid IOS command

A . There is insufficient room for more than one image. B . The router has detected a copy of the current software image on the TFTP server. C . The file can be relocated and not compressed. D . The image to load is a binary executable file.

A . SNMP B . Netflow C . WCCP D . IP SLA

A . XML B . RIB C . FIB D . QoS E . PFI

A . It creates a global address pool for all outside NAT transactions B . It establishes a dynamic address pool for an inside static address C . It creates dynamic source translations for all inside local PAT transactions D . It creates a one-to-one mapping between an inside local address and an inside global address E . It maps one inside source address to a range of outside global addresse

A . provides an opportunity to build short-term consultative relationships with customers B . provides an opportunity to build long-term consultative relationships with customers C . provides an opportunity to build consultative relationships with customers D . provides an opportunity to sell more product

A . The Cisco IOS image file will not be visible in the output from the show flash command. B . The show version command will not show the Cisco IOS image file location. C . When the router boots up， the Cisco IOS image will be loaded from a secured FTP location. D . The running Cisco IOS image will be encrypted and then automatically backed up to a TFTP server.

A . It checks the configuration register. B . It attempts to boot from a TFTP server. C . It loads the first image file in flash memory. D . It inspects the configuration file in NVRAM for boot instructions.

A . verifies which operation types have been enabled for IP SLA source B . verifies which operation types have been enabled for IP SLA responder C . verifies which operation types are supported in software D . verifies enabled operation types that are not running

A . Installed Hardware serial numbers B . The status of installed hardware C . Installed hardware D . Unique Device Identifier E . system internal temperature F . main power supply conditio

A . Cisco IOS gateways provide services such as address translation and network access control for the devices on the networl B . Cisco IOS gateways provide services such as bandwidth management and accounting C . Cisco IOS gateways provide media termination and signal translation between the public switched telephone network （PSTN） and IP networks D . Cisco IOS gateways provide zone management for all registered endpoints in the network

A . Router#copy tftp flash B . Router(config)#restore flash C . Router(config)#repair flash D . Router#copy flash run E . Router>copy start flash F . Router#copy start flash

A . It checks the configuration register B . It attempts to boot from a TFTP server C . It loads the first image file in flash memory D . It inspects the configuration file in NVRAM for boot instructio