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Worksheetsmodul8
Total questions: 33
Worksheet time: 17mins
Which OSI layer sends segments to be encapsulated in an IPv4 or IPv6 packet?
Data link layer
Transport layer
Network layer
Session layer
Which layer is responsible for taking an IP packet and preparing it for transmission over the communications medium?
Network layer
Data link layer
Transport layer
Physical layer
What is the term for splitting up an IP packet when forwarding it from one medium to another medium with a smaller MTU?
Serialization
Encapsulation
Segmentation
Fragmentation
Which delivery method does not guarantee that the packet will be delivered fully without errors?
Connectionless
Media independent
Best effort
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.)
Time to Live
Protocol
Source IP address
Destination IP address
Differentiated Services (DS)
Which statement is correct about IPv4 packet header fields?
The Time to Live field is used to determine the priority of each packet.
The source and destination IPv4 addresses remain the same while travelling from source to destination
The Total Length and Header Checksum fields are used to reorder a fragmented packet.
The Version field identifies the next level protocol.
Which field is used to detect corruption in the IPv4 header?
Time to Live
Differentiated Services (DS)
Protocol
Header Checksum
Which field includes common values such as ICMP (1), TCP (6), and UDP (17)?
Differentiated Services (DS)
Header Checksum
Time to Live
Protocol
Which three options are major issues associated with IPv4? (Choose three.)
Global and political boundaries
IP address depletion
Increased network complexity and Internet routing table expansion
Too many IPv4 addresses available
Lack of end-to-end connectivity
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
Uses a simpler header to provide improved packet handling
Supports class-based networks
Standardizes the use of NAT
Which is true of the IPv6 header?
It contains 12 header fields.
It contains 8 header fields.
It consists of 20 octets.
It consists of 40 octets
Which is true of the IPv6 packet header?
The Version field identifies the next header.
The Hop Limit field replaces the IPv4 Time to Live field
The Source and Destination IPv6 addresses change while travelling from source to destination.
The Time to Live field replaces the DiffServ field.
Which statement about host forwarding decisions is true?
Local hosts can reach each other without the need of a router
A remote destination host is on the same local network as the sending host.
Routing is enabled on switches to discover the best path to a destination.
A host cannot ping itself.
Which default gateway statement is true?
Traffic can only be forwarded outside the local network if there is no default gateway.
A default gateway is required to send packets to other hosts on the local network.
The default gateway address is the IP address of the router on the local network
The default gateway address is the IP address of a switch on a remote network.
Which two commands could be entered on a Windows host to view its IPv4 and IPv6 routing table? (Choose two.)
print net
route print
netroute -l
netstat -r
print route
What is the command used on a Cisco IOS router to view the routing table?
netstart -r
show routing table
route print
show ip route
What does a code of “O” indicate next to a route in the routing table?
A directly connected route
A route with an administrative distance of 0
A gateway of last resort
A route learned dynamically from OSPF
This type of route is also known as a gateway of last resort.
Default route
Directly connected route
Static route
Remote route
Which is a characteristic of static routes?
They are advertised to directly connected neighbors.
They are manually configured
They automatically adjust to a change in network topology.
They are appropriate when there are many redundant links.
True or False? A router can be configured with a combination of both static routes and a dynamic routing protocol.
False
True
Which command can be used on a Windows host to display the routing table?
show ip route
netstat -s
tracert
netstat -r
What information is added during encapsulation at OSI Layer 3?
Source and destination port number
Source and destination IP address
Source and destination application protocol
Source and destination MAC
How does the network layer use the MTU value?
The MTU is passed to the network layer by the data link layer
The network layer depends on the data link layer to set the MTU, and adjusts the speed of transmission to accommodate it.
The network layer depends on the higher level layers to determine the MTU.
To increase speed of delivery, the network layer ignores the MTU.
Which characteristic describes an IPv6 enhancement over IPv4?
Both IPv4 and IPv6 support authentication, but only IPv6 supports privacy capabilities.
IPv6 addresses are based on 128-bit flat addressing as opposed to IPv4 which is based on 32-bit hierarchical addressing.
The IPv6 address space is four times bigger than the IPv4 address space.
The IPv6 header is simpler than the IPv4 header is, which improves packet handling
Which statement accurately describes a characteristic of IPv4?
IPv4 has a 32-bit address space
IPv4 natively supports IPsec
An IPv4 header has fewer fields than an IPv6 header has
All IPv4 addresses are assignable to hosts
When a router receives a packet, what information must be examined in order for the packet to be forwarded to a remote destination?
Source IP address
Source MAC address
Destination MAC address
Destination IP address
A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?
The packet will be sent to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host.
The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host.
The packet will be sent only to the default gateway.
The packet will be sent directly to the destination host
Which IPv4 address can a host use to ping the loopback interface?
126.0.0.1
127.0.0.0
126.0.0.0
127.0.0.1
When a connectionless protocol is in use at a lower layer of the OSI model, how is missing data detected and retransmitted if necessary?
Network layer IP protocols manage the communication sessions if connection-oriented transport services are not available.
Connectionless acknowledgements are used to request retransmission.
The best-effort delivery process guarantees that all packets that are sent are received.
Upper-layer connection-oriented protocols keep track of the data received and can request retransmission from the upper-level protocols on the sending host
What was the reason for the creation and implementation of IPv6?
To make reading a 32-bit address easier
To allow NAT support for private addressing
To provide more address space in the Internet Names Registry
To relieve IPv4 address depletion
Which information is used by routers to forward a data packet toward its destination?
Source data-link address
Source IP address
Destination IP address
Destination data-link address
Which field in an IPv4 packet header will typically stay the same during its transmission?
Time-to-Live
Flag
Packet Length
Destination Address
Which field in an IPv6 packet is used by the router to determine if a packet has expired and should be dropped?
TTL
Hop Limit
Address Unreachable
No Route to Destination
