CCNA 1 v7 Modules 8 - 10: Communicating Between Networks pt 3
What property of ARP causes the request to be flooded out all ports of a switch except for the port receiving the ARP request?
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?
destination IPv4 address
Which term describes a field in the IPv4 packet header used to detect corruption in the IPv4 header?
header checksum
Which two functions are primary functions of a router?
packet forwarding path selection
Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?
version
Which term describes a field in the IPv4 packet header used to limit the lifetime of a packet?
TTL
What property of ARP allows MAC addresses of frequently used servers to be fixed in the ARP table?
A static IP-to-MAC address entry can be entered manually into an ARP table.
What property of ARP causes cached IP-to-MAC mappings to remain in memory longer?
Entries in an ARP table are time-stamped and are purged after the timeout expires.
What property of ARP allows hosts on a LAN to send traffic to remote networks?
Local hosts learn the MAC address of the default gateway.
What are two potential network problems that can result from ARP operation?
On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays. Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic.
What is the effect of using the Router# copy running-config startup-config command on a router?
The contents of NVRAM will change.
What property of ARP forces all Ethernet NICs to process an ARP request?
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks.
What property of ARP causes a reply only to the source sending an ARP request?
The source MAC address appears in the header of the Ethernet frame.
What property of ARP causes the NICs receiving an ARP request to pass the data portion of the Ethernet frame to the ARP process?
The type field 0x806 appears in the header of the Ethernet frame.
Which term describes a field in the IPv4 packet header that contains an 8-bit binary value used to determine the priority of each packet?
differentiated services
Which three commands are used to set up secure access to a router through a connection to the console interface?
line console 0 login password cisco
Which term describes a field in the IPv4 packet header used to identify the next level protocol?
protocol
Which term describes a field in the IPv4 packet header that contains a 32-bit binary value associated with an interface on the sending device?
source IPv4 address
