IP Addressing and Routing

CCNA1 Midterm Practice Exam

Destination IP address

Used by routers to forward packets.

Multicast messages

Sent to a select group of hosts.

netstat -r

Displays the routing table on Windows.

TTL (Time To Live)

Determines if an IPv6 packet expires.

Destination IP address

Typically unchanged in IPv4 headers.

IPv4 characteristic

All addresses are 32 bits.

IPv6 enhancement

Simpler header than IPv4.

IPv4 security advantage

Supports privacy capabilities.

IPv6 creation reason

Address IPv4 depletion.

Layer 3 encapsulation

Adds source/destination IP addresses.

127.0.0.1

Pings the loopback interface.

Same LAN transmission

Packets sent directly to the destination.

MTU usage

Network layer relies on higher layers for MTU.

Subnet mask

Identifies network/host portions of an IPv4 address.

MTU usage at network layer

Relies on higher layers for MTU determination

IPv4 subnet mask

Identifies network/host portions of an address.