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WorksheetsMod 8: IPv4 vs IPv6 Packets
Total questions: 18
Worksheet time: 9mins
Which statement best defines IPv4 in networking?
Older IP using 32-bit addresses, like 192.168.1.10
Newer IP using 128-bit addresses for wider space
A routing protocol that discovers shortest paths
A security method that encrypts packet headers
What is the main purpose of NAT in IPv4 networks?
Share one public IP across many private hosts
Encrypt packets for secure transmission
Assign 128-bit addresses to all devices
Guarantee zero packet loss across the internet
In an IPv6 network, Hop Limit serves what function?
Stops packets from looping indefinitely
Shares public IP among private devices
Labels flows for stream identification
Carries addressing information to routers
Which field in IPv6 helps routers identify packets in the same stream?
Flow Label
TTL
Hop Limit
Header
Address depletion refers to what situation in IPv4?
Running out of available addresses
Routers losing forwarding tables
Hosts failing to resolve domain names
Packets exceeding MTU size limits
Which statement correctly contrasts IPv4 and IPv6 address sizes?
IPv4 uses 64-bit; IPv6 uses 128-bit
IPv4 uses 128-bit; IPv6 uses 32-bit
IPv4 uses 32-bit; IPv6 uses 128-bit
Both use 32-bit across all networks
A packet keeps looping through routers without reaching the destination. Which field prevents this outcome?
TTL or Hop Limit
Payload length
Destination port
Flow Label
Which statement about IPv4 header size is correct?
It is variable in size
It is always 20 bytes
It is fixed at 40 bytes
It depends on payload size
What happens when the TTL value in an IPv4 packet reaches zero?
The TTL resets to 255
The packet loops forever
The packet is dropped
The router fragments it
What is the address size of IPv6 compared to IPv4?
128-bit vs 32-bit
64-bit vs 16-bit
256-bit vs 64-bit
48-bit vs 32-bit
Select all true statements about IPv6 headers compared to IPv4 headers.
IPv6 header size is fixed at 40 bytes
IPv6 replaces TTL with Hop Limit
IPv6 removes the header checksum field
IPv6 keeps fragmentation inside the base header
Why does a simple, fixed-size IPv6 header improve performance?
It allows more MAC addresses per switch port
Routers process packets faster with predictable fields
It eliminates routing tables entirely
It compresses application data on the fly
Which feature exists in IPv6 but not in IPv4’s base header?
Flow Label for traffic handling
ARP for address resolution
Checksum in the header
Broadcast addressing by default
What notation is used for IPv6 addresses?
Binary with slashes
Octal with hyphens
Dotted decimal
Hexadecimal with colons
Which addresses are 128 bits long?
IPv4 addresses
MAC addresses
IPv6 addresses
Private IPv4
Which combination is true for IPv6 header complexity and size compared to IPv4?
Simple and variable
Complex and variable
Simple and fixed
Complex and fixed
Select all fields that appear in the IPv6 header table:
Traffic Class
Next Header
Hop Limit
Checksum
Which comparison is correct about address format?
IPv4 hexadecimal, IPv6 dotted decimal
Both hexadecimal formats
Both dotted decimal formats
IPv4 dotted decimal, IPv6 hexadecimal
