Chapter - 8 Check Your Understanding

Which statement is correct about IPv4 packet header fields? -The source and destination IP addresses in the IP packet do not change in route from source to destination. -the time to live field is used to determine the priority of each packet. -the total length and header checksum fields are used to reorder a fragmented packet. -the version field identifies the next level protocol.

-The source and destination IP addresses in the IP packet do not change in route from source to destination.

Which is true of the IPv6 header? - it consist of 20 octets - it consists of 40 octets - it contains 8 header fields - it contains 12 header fields

- it consists of 40 octets - it contains 8 header fields

Which field includes common values such as ICMP (1), TCP (6), and UDP (17)?

Protocol

What is the command used on a Cisco IOS router to view the routing table?

show ip route

Which is a characteristic of static routes? - They are manually configured. - They are advertised to directly connected neighbors. - They are appropriate when there are many redundant links. - They automatically adjust to a change in network topology.

they are manually configured

Which OSI layer sends segments to be encapsulated in an IPv4 or IPv6 packet?

transport layer

True or False? A router can be configured with a combination of both static routes and a dynamic routing protocol.

true

Which three options are major issues associated with IPv4? (Choose three.) - IP address depletion - increased network complexity and internet routing table expansion - always on connections - lack of end-to-end connectivity - global and political boundaries - too many IPv4 addresses available

- IP address depletion - increased network complexity and internet routing table expansion - lack of end-to-end connectivity

Which field is used to detect corruption in the IPv4 header?

Header Checksum

Which delivery method does not guarantee that the packet will be delivered fully without errors?

best effort

What does a code of "O" indicate next to a route in the routing table?

a route learned dynamically from OSPF

This type of route is also known as a gateway of last resort.

default route

What are the two most commonly referenced fields in an IPv4 packet header that indicate where the packet is coming from and where it is going? (Choose two.) destination IP address protocol Time to Live source IP address Differentiated Services (DS)

destination IP address source IP address

Which layer is responsible for taking an IP packet and preparing it for transmission over the communications medium?

data link layer

What is the term for splitting up an IP packet when forwarding it from one medium to another medium with a smaller MTU?

fragmentation

Which two commands could be entered on a Windows host to view its IPv4 and IPv6 routing table? (Choose two.) - netroute -I - netroute -r - print route - route print - print net

- netroute -r - route print

Which statement about host forwarding decisions is true? - A host cannot ping itself. - A remote destination host is on the same network as the sending host. - Local hosts can reach each other without the need of a router. - Routing is enabled on switches to discover the best path to a destination.

- Local hosts can reach each other without the need of a router.

Which is true of the IPv6 packet header? - The Hop Limit filed replaces the IPv4 Time to Live field. - The source and destination IPv6 address change while traveling from source to destination. - The Time to Live field replaces the DiffServ field. - The Version field identifies the next header.

- The Hop Limit filed replaces the IPv4 Time to Live field.

Which default gateway statement is true? - A default gateway is required to send packets to other hosts on the local network. - The default gateway address is the IP address of a switch on a remote network. - The default gateway address is the IP address of the router on the local network. - Traffic can only be forwarded outside the local network if there is no default gateway.

- The default gateway address is the IP address of the router on the local network.

Which two options are improvements provided by IPv6 as compared to IPv4? (Choose two.) - Header supports additional fields for complex packets - increased the IP address space - standardizes the use of NAT - supports class-based networks - uses a simpler header to provide improved packet handling.

- increased the IP address space - uses a simpler header to provide improved packet handling.