Networking Essentials - Chapter 7

Which information is used by routers to forward a data packet toward its destination?

• source IP address
• destination IP address
• source data-link address
• destination data-link address

A router receives a packet from the Gigabit 0/0 interface and determines that the packet needs to be forwarded out the Gigabit 0/1 interface. What will the router do next?

• create a new Layer 2 Ethernet frame to be sent to the destination
• route the packet out the Gigabit 0/1 interface
• look into the routing table to determine if the destination network is in the routing table
• look into the ARP cache to determine the destination IP address

Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1?

• R1: G0/0
• R2: S0/0/1
• R2: S0/0/0
• R1: S0/0/0

During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

• analyze the destination IP address
• discard the traffic after consulting the route table
• switch the packet to the directly connected interface
• loop up the next-hop address for the packet

What will a router do if it cannot determine where to forward an incoming packet?

• The router will drop it.
• The router will save it in the sending queue and try to forward it again later.
• The router will forward it out all interfaces.
• The router will send an incident message to the network administrator.

In implementing a LAN in a corporation, what are three advantages of dividing hosts between multiple networks connected by a distribution layer? (Choose three.)

• Only LAN switches are needed
• It reduces complexity and expense by using LAN switch devices
• It provides increased security.
• it splits up broadcast domains and decreases traffic.
• It makes the host invisible to those on other local network segments.

What type of route is indicated by the code C in an IPv4 routing table on a Cisco router?

• default route
• static route
• dynamic route that is learned through EIGRP
• directly connected route

Which portion of the network layer address does a router use to forward packets?

• Network portion
• host portion
• broadcast address
• gateway address

What role does a router play on a network?

• selecting the path to destination networks
• connecting smaller networks into a single broadcast domain
• forwarding Layer 2 broadcasts
• forwarding frames based on MAC address

A router receives an incoming packet and determines that the destination host is located on a LAN directly attached to one of the router interfaces. Which destination address will the router use to encapsulate the Ethernet frame when forwarding the packet?

• MAC address of the SVI on the switch
• MAC address of the destination host
• MAC address of the interface of the connected router
• MAC address of the default gateway of the LAN