Infrastructure Services Flashcards
Which Cisco IOS interface configuration command is used to enable DHCP relay agent on the specified router interface?
The ip helper-address interface configuration command
Which Cisco IOS command is used to re-enable DHCP server and DHCP relay agent service on a Cisco router if these services have been disabled?
the service dhcp command
Which type of NAT maps an unregistered IP address to a registered IP address on a one-to-one basis?
Static NAT
What factor determines the number of simultaneous translations that a router will support?
Amount of Dynamic Random Access Memory (DRAM) of the router
What are the four messages that are exchanged between a host and Cisco router acting as a Dynamic Host Configuration Protocol (DHCP) server?
DHCPDISCOVER, DHCPOFFER, DHCPREQUEST, and DHCPACK
With which type of NAT is the translation table populated as the required traffic flows through NAT-enabled devices?
Dynamic NAT
Which window on the Cisco Security Device Manager (SDM) Version 2.3.1 shows the configured dynamic NAT configuration?
The Edit NAT Configuration window
What are the four types of Network Address Translation as defined by Cisco?
Static, dynamic, overloading, and overlapping
What command is used to enable an interface?
no shutdown
Which two of the four DHCP messages that are exchanged between a host and a DHCP server, are unicast?
DHCPOFFER and DHCPACK
Which device enables a host to acquire an IP address from DHCP servers located on different subnets?
DHCP relay agent
Which OSI Layer 4 protocol is used by DHCP clients to broadcast DHCP discovery messages?
User Datagram Protocol (UDP)
With which type of NAT is the translation table populated manually?
Static NAT
Which protocol is used to automate the distribution of IP addresses to clients from a central server?
Dynamic Host Configuration Protocol (DHCP)
Which two of the four DHCP messages that are exchanged between a host and a DHCP server are broadcast?
DHCPDISCOVER and DHCPREQUEST
