cisco quiz 6-8
Which three fields are used in a UDP segment header? (Choose three.)
- Length - Source Port - checksum
What are two functions that are provided by the network layer? (Choose two.)
-providing end devices with a unique network identifier -directing data packets to destination hosts on other networks
Which number or set of numbers represents a socket?
192.168.1.1:80
When subnetting a /64 IPv6 network prefix, which is the preferred new prefix?
72
Which statement is true about an interface that is configured with the IPv6 address command?
A link-local IPv6 address is automatically configured on the interface.
Which two applications use UDP as the transport layer protocol? (Choose two.)
DNS queries DHCP
Which two statements describe broadcast transmissions on a wired network? (Choose two.)
Directed broadcasts are intended for all hosts on a local or remote network. - Limited broadcasts are only intended for the hosts on a local network.
When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 header can be used to inform the routers and switches to maintain the same path for the packets in the same conversation?
Flow Label
Which two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.)
It eliminates most address configuration errors It reduces the burden on network support staff
Which statement accurately describes public IP addresses?
Public IP addresses must be unique across the entire Internet.
How does the network layer use the MTU value?
The MTU is passed to the network layer by the data link layer
Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer?
The client randomly selects a source port number.
Within a production network, what is the purpose of configuring a switch with a default gateway address?
The default gateway address is used to forward packets originating from the switch to remote networks.
What happens if part of an FTP message is not delivered to the destination?
The part of the FTP message that was lost is re-sent.
Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?
Time-to-Live
A network administrator notices that the default gateway device sends an ICMP Redirect message to the workstation when the workstation tries to connect to a file server on another network. What is the purpose for this ICMP message?
To notify the workstation, that another router on the same network, is the better default-gateway to reach the remote server.
What is an advantage of UDP over TCP?
UDP communication requires less overhead.
During the boot process, in what memory location will the router bootstrap program look for the IOS image if a TFTP server is not used?
flash
Which feature on a Cisco router permits the forwarding of traffic for which there is no specific route?
gateway of last resort
When developing an IP addressing scheme for an enterprise network, which devices are recommended to be grouped into their own subnet or logical addressing group?
hosts accessible from the internet
A user is unable to access the company server from a computer. On issuing the ipconfig command, the user finds that the IP address of the computer is displayed as 169.254.0.2. What type of address is this?
link-local
Which type of IPv6 address is not routable and used only for communication on a single subnet?
link-local address
A network administrator needs to monitor network traffic to and from servers in a data center. Which features of an IP addressing scheme should be applied to these devices?
predictable static IP addresses for easier identification
What does the value of the window size specify
the amount of data that can be sent before an acknowledgment is required
When a client connects to an HTTP server by the use of a randomly generated source port number, what destination port number will the HTTP server use when building a response?
the original source port number that was randomly generated by the client
How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks?
three
What is the purpose of using a source port number in a TCP communication?
to keep track of multiple conversations between devices
A user who is unable to connect to the file server contacts the help desk. The helpdesk technician asks the user to ping the IP address of the default gateway that is configured on the workstation. What is the purpose for this ping command?
to test if the workstation can communicate on the network
