640-822 무료 덤프문제 온라인 액세스

Refer to the exhibit. Switch-1 needs to send data to a host with a MAC address of 00b0.d056.efa4. What will Switch-1 do with this data?

• A.Switch-1 will send an ARP request out all its ports except the port from which the data originated.
• B.Switch-1 will drop the data because it does not have an entry for that MAC address.
• C.Switch-1 will flood the data out all of its ports except the port from which the data originated.
• D.Switch-1 will forward the data to its default gateway.

Refer to the exhibit.

Based on the RouterA configuration shown, and assuming that all routing is operational, DNS lookups to 209.165.202.129 will fail for which reason?

• A.AAA must be configured for authentication of the DNS server.
• B.DNS queries are currently disabled.
• C.DHCP has not been enabled or configured.
• D.Cisco.com will be incorrectly appended to all non-Cisco DNS queries.

Which layer of the OSI model is responsible for segmenting data from a sending host that enables large files to be broken down into smaller segments to prevent transmission errors?

• A.application
• B.presentation
• C.session
• D.transport

By which prompt is the global configuration mode on a Cisco router identified?

• A.Router(config-line)#
• B.Router(config-router)#
• C.Router>
• D.Router(config)#
• E.Router#
• F.Router(config-if)#

The following commands are entered on the router:
Burbank(config)# enable secret fortress
Burbank(config)# line con 0
Burbank(config-line)# login
Burbank(config-line)# password n0way1n Burbank(config-line)# exit
Burbank(config)# service password-encryption
What is the purpose of the last command entered?

• A.to encrypt the enable secret password
• B.to require the user to enter an encrypted password during the login process
• C.to provide login encryption services between hosts attached to the router
• D.to prevent the vty, console, and enable passwords from being displayed in plain text in the configuration files