NET01 - FINALS P2

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

• • Enter CTRL-Z at the privileged mode prompt.

• • Exit privileged EXEC mode and press Enter .

• • Exit global configuration mode.

What method is used to manage contention-based access on a wireless network?

• • CSMA/CA

• • CSMA/CD

What is a function of the data link layer?

• • provides the formatting of data

• • provides end-to-end delivery of data between hosts

• • provides delivery of data between two applications

• • provides for the exchange of frames over a common local media

What is the purpose of the TCP sliding window?

• • to ensure that segments arrive in order at the destination

• • to end communication when data transmission is complete

• • to inform a source to retransmit data from a specific point forward

• • to request that a source decrease the rate at which it transmits data

Answer explanation

The TCP sliding window allows a destination device to inform a source to slow down the rate of transmission. To do this, the destination device reduces the value contained in the window field of the segment. It is acknowledgment numbers that are used to specify retransmission from a specific point forward. It is sequence numbers that are used to ensure segments arrive in order. Finally, it is a FIN control bit that is used to end a communication session.

What characteristic describes spyware?

• • software that is installed on a user device and collects information about the user

• • an attack that slows or crashes a device or network service

• • the use of stolen credentials to access private data

Which switching method drops frames that fail the FCS check?

• • store-and-forward switching

• • cut-through switching

Which range of link-local addresses can be assigned to an IPv6-enabled interface?

• • FEC0::/10

• • FDEE::/7

• • FE80::/10

• • FF00::/8

A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? (Choose two.)

• • DNS server

• • source port number

• • HTTP server

• • source MAC address

• • default gateway

Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)

• • NAT introduces problems for some applications that require end-to-end connectivity.

• • NAT will impact negatively on switch performance.

• • NAT provides a solution to slow down the IPv4 address depletion.

• • NAT improves packet handling.

Answer explanation

Network Address Translation (NAT) is a technology that is implemented within IPv4 networks. One application of NAT is to use private IP addresses inside a network and use NAT to share a few public IP addresses for many internal hosts. In this way it provides a solution to slow down the IPv4 address depletion. However, since NAT hides the actual IP addresses that are used by end devices, it may cause problems for some applications that require end-to-end connectivity.

What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process?

• • 0C6F:65FF:FEC2:BDF8

• • 1E6F:65FF:FEC2:BDF8

• • C16F:65FF:FEC2:BDF8

• • 106F:65FF:FEC2:BDF8