Quiz 6

Which IPv4 address can a host use to ping the loopback interface? (6.2.1) 126.0.0.1 127.0.0.0 126.0.0.0 127.0.0.1

127.0.0.1

What is the default gateway for the network 192.133.219.0/24? (6.4.3)

192.133.219.1

Which key combination allows a user to abort setup mode? (6.3.2) Ctrl-C Ctrl-R Ctrl-Z Ctrl-Shift-6

Ctrl-C

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? (6.1.4) Next Header Flow Label Traffic Class Differentiated Services

Flow Label

Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet? (6.1.3) Differentiated Services Fragment Offset Header Length Time-to-Live

Time-to-Live

During the boot process, where will the router bootstrap program look for the IOS image by default? flash NVRAM RAM ROM

flash

What is a hop? (6.1.1)

A hop is an intermediary Layer 3 device that a packet has to traverse to reach its destination.

A router may have to fragment a packet when forwarding it from one medium to another medium that has a smaller _______

MTU

The acronym _______ is used to define the process that allows multiple devices to share a single routable IP address. (6.1.4)

NAT

How does the network layer use the MTU value? (6.1.2) The network layer depends on the higher level layers to determine the MTU. The network layer depends on the data link layer to set the MTU, and adjusts the speed of transmission to accommodate it. The MTU is passed to the network layer by the data link layer To increase speed of delivery, the network layer ignores the MTU.

The MTU is passed to the network layer by the data link layer

What command can be used to see which interfaces in each router are active AND operational

The command to use for this activity is show ip interface brief in each router. The active and operational interfaces are represented by the value "up" in the "Status" and "Protocol" columns.

Within a production network, what is the purpose of configuring a switch with a default gateway address? (6.4.3) Hosts that are connected to the switch can use the switch default gateway address to forward packets to a remote destination. A switch must have a default gateway to be accessible by Telnet and SSH. The default gateway address is used to forward packets originating from the switch to remote networks. It provides a next-hop address for all traffic that flows through the switch.

The default gateway address is used to forward packets originating from the switch to remote networks.

If there are two or more possible routes to the same destination, the ________ is used to determine which route is used in the routing table.

metric

Which portion of the network layer address does a router use to forward packets? (6.2.2) host portion broadcast address network portion gateway address

network portion

What are two functions that are provided by the network layer? (Choose two.) (6.1.1) carrying data between processes that are running on source and destination hosts providing end devices with a unique network identifier placing data on the network medium directing data packets to destination hosts on other networks providing dedicated end-to-end connections

providing end devices with a unique network identifier directing data packets to destination hosts on other networks