Chapter_7_IP Addressing
Fill in the blank. The decimal equivalent of the binary number 10010101 is __________________
.149 *
What is the decimal equivalent of the hex number 0x3F? _____________
63 (To convert from hexadecimal to decimal, multiply each digit by the place value that is associated with the position of the digit and add the results.)
What is the complete range of TCP and UDP well-known ports? > 0 to 255 > 0 to 1023 > 256 - 1023 > 1024 - 49151
> 0 to 1023*
Compared to UDP, what factor causes additional network overhead for TCP communication? > network traffic that is caused by retransmissions* > the identification of applications based on destination port numbers > the encapsulation into IP packets > the checksum error detection
> network traffic that is caused by retransmissions*
Match the characteristic to the protocol category. (Not all options are used.)
TCP -> window size TCP -> 3-way handshake UDP -> connectionless UDP -> best for VoIP Both UDP and TCP -> checksum Both UDP and TCP -> port number
Match each application to its connectionless or connection-oriented protocol.
TCP -> HTTP TCP -> FTP TCP -> TELNET UDP -> TFTP UDP -> DHCP
Fill in the blank. The binary equivalent of the decimal number 232 is ________________
11101000 *
What is the binary equivalent of the decimal number 232? > 11101000 > 11000110 > 10011000 > 11110010
> 11101000*
OV
OV
Refer to the exhibit. Consider a datagram that originates on the PC and that is destined for the web server. Match the IP addresses and port numbers that are in that datagram to the description. (Not all options are used.)
192.168.1.2 -> source IP address 192.168.2.2 -> destination IP address 2578 -> source port number 80 -> destination port number
Which three IP addresses are private ? (Choose three.) > 10.1.1.1 > 172.32.5.2 > 192.167.10.10 > 172.16.4.4 > 192.168.5.5 > 224.6.6.6
> 10.1.1.1* > 172.16.4.4 * > 192.168.5.5*
What is the decimal equivalent of the binary number 10010101? > 149 > 157 > 168 > 192
> 149*
What subnet mask is represented by the slash notation /20? > 255.255.255.248 > 255.255.224.0 > 255.255.240.0 > 255.255.255.0 > 255.255.255.192
> 255.255.240.0*
How many bits are in an IPv4 address? > 32 > 64 > 128 > 256
> 32 * (An IPv4 address is comprised of 4 octets of binary digits, each containing 8 bits, resulting in a 32-bit address.)
Which of these addresses is the shortest abbreviation for the IP address: 3FFE:1044:0000:0000:00AB:0000:0000:0057? > 3FFE:1044::AB::57 > 3FFE:1044::00AB::0057 > 3FFE:1044:0:0:AB::57 > 3FFE:1044:0:0:00AB::0057 > 3FFE:1044:0000:0000:00AB::57 > 3FFE:1044:0000:0000:00AB::0057
> 3FFE:1044:0:0:AB::57*
What are three characteristics of multicast transmission? (Choose three.) > The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255. > A single packet can be sent to a group of hosts. > Multicast transmission can be used by routers to exchange routing information. >The range of 224.0.0.0 to 224.0.0.255 is reserved to reach multicast groups on a local network. > Computers use multicast transmission to request IPv4 addresses. > Multicast messages map lower layer addresses to upper layer addresses.
> A single packet can be sent to a group of hosts. * > Multicast transmission can be used by routers to exchange routing information. * >The range of 224.0.0.0 to 224.0.0.255 is reserved to reach multicast groups on a local network.*
Which scenario describes a function provided by the transport layer? > A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network. > A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header. > A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.* > A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.
> A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.*
Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.) > ACK* > FIN > PSH > RST > SYN* > URG
> ACK* > SYN*
What field content is used by ICMPv6 to determine that a packet has expired? > TTL field > CRC field > Hop Limit field > Time Exceeded field
> Hop Limit field* (ICMPv6 sends a Time Exceeded message if the router cannot forward an IPv6 packet because the packet expired. The router uses a hop limit field to determine if the packet has expired, and does not have a TTL field.)
Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host? > ARPv6 > DHCPv6 > ICMPv6 > UDP
> ICMPv6* (SLAAC uses ICMPv6 messages when dynamically assigning an IPv6 address to a host. )
What is indicated by a successful ping to the ::1 IPv6 address? > The host is cabled properly. > The default gateway address is correctly configured. > All hosts on the local link are available. > The link-local address is correctly configured. > IP is properly installed on the host.
> IP is properly installed on the host.* (The IPv6 address ::1 is the loopback address. A successful ping to this address means that the TCP/IP stack is correctly installed. It does not mean that any addresses are correctly configured.)
Which transport layer feature is used to guarantee session establishment? > UDP ACK flag > TCP 3-way handshake > UDP sequence number > TCP port number
> TCP 3-way handshake*
What are three parts of an IPv6 global unicast address? (Choose three.) > an interface ID that is used to identify the local network for a particular host > a global routing prefix that is used to identify the network portion of the address that has been provided by an ISP > a subnet ID that is used to identify networks inside of the local enterprise site > a global routing prefix that is used to identify the portion of the network address provided by a local administrator > an interface ID that is used to identify the local host on the network
> a global routing prefix that is used to identify the network portion of the address that has been provided by an ISP * > a subnet ID that is used to identify networks inside of the local enterprise site* > an interface ID that is used to identify the local host on the network* (EX. There are three elements that make up an IPv6 global unicast address. A global routing prefix which is provided by an ISP, a subnet ID which is determined by the organization, and an interface ID which uniquely identifies the interface interface of a host.)
What does a client application select for a TCP or UDP source port number? > a random value in the well-known port range > a random value in the range of the registered ports > a predefined value in the well-known port range > a predefined value in the range of the registered ports
> a random value in the range of the registered ports*
A host device sends a data packet to a web server via the HTTP protocol. What is used by the transport layer to pass the data stream to the proper application on the server? > sequence number > acknowledgment > source port number > destination port number
> destination port number *
A message is sent to all hosts on a remote network. Which type of message is it? > limited broadcast > multicast > directed broadcast > unicast
> directed broadcast*
Which two IPv4 to IPv6 transition techniques manage the interconnection of IPv6 domains? (Choose two.) > trunking > dual stack > encapsulation > tunneling > multiplexing
> dual stack* > tunneling* (There are three techniques to allow IPv4 and IPv6 to co-exist on a network. Dual stack allows IPv4 and IPv6 to coexist on the same network segment. Dual stack devices run both IPv4 and IPv6 protocol stacks simultaneously. Tunneling is a method of transporting an IPv6 packet over an IPv4 network. The IPv6 packet is encapsulated inside an IPv4 packet, similar to other types of data. Network Address Translation 64 (NAT64) allows IPv6-enabled devices to communicate with IPv4-enabled devices using a translation technique similar to NAT for IPv4)
What is a beneficial feature of the UDP transport protocol? > acknowledgment of received data > fewer delays in transmission > tracking of data segments using sequence numbers > the ability to retransmit lost data
> fewer delays in transmission*
What does the IP address 172.17.4.250/24 represent? > network address > multicast address > host address > broadcast address
> host address*
What type of address is automatically assigned to an interface when IPv6 is enabled on that interface? > global unicast > link-local > loopback > unique local
> link-local*
What are two types of IPv6 unicast addresses? (Choose two.) > multicast > loopback > link-local > anycast > broadcast
> loopback* > link-local* (Loopback and link-local are specific types of unicast addresses.)
A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at the same time, without having a single data stream using all available bandwidth? > window size > multiplexing > port numbers > acknowledgments
> multiplexing*
Which two parts are components of an IPv4 address? (Choose two.) > subnet portion > network portion > logical portion > host portion > physical portion > broadcast portion
> network portion* > host portion*
An administrator wants to configure hosts to automatically assign IPv6 addresses to themselves by the use of Router Advertisement messages, but also to obtain the DNS server address from a DHCPv6 server. Which address assignment method should be configured? > SLAAC > stateless DHCPv6 > stateful DHCPv6 > RA and EUI-64
> stateless DHCPv6* (Stateless DHCPv6 allows clients to use ICMPv6 Router Advertisement (RA) messages to automatically assign IPv6 addresses to themselves, but then allows these clients to contact a DHCPv6 server to obtain additional information such as the domain name and address of DNS servers.)
Which factor determines TCP window size? > the amount of data to be transmitted > the number of services included in the TCP segment > the amount of data the destination can process at one time > the amount of data the source is capable of sending at one time
> the amount of data the destination can process at one time*
Which two things can be determined by using the ping command? (Choose two.) > the number of routers between the source and destination device > the IP address of the router nearest the destination device > the average time it takes a packet to reach the destination and for the response to return to the source > the destination device is reachable through the network > the average time it takes each router in the path between source and destination to respond
> the average time it takes a packet to reach the destination and for the response to return to the source * > the destination device is reachable through the network*
What is a socket? > the combination of the source and destination IP address and source and destination Ethernet address > the combination of a source IP address and port number or a destination IP address and port number > the combination of the source and destination sequence and acknowledgment numbers > the combination of the source and destination sequence numbers and port numbers
> the combination of a source IP address and port number or a destination IP address and port number*
During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent? > the total number of bytes that have been received > one number more than the sequence number > the next byte that the destination expects to receive > the last sequence number that was sent by the source
> the next byte that the destination expects to receive*
What is the purpose of the subnet mask in conjunction with an IP address? > to uniquely identify a host on a network > to identify whether the address is public or private > to determine the subnet to which the host belongs > to mask the IP address to outsiders
> to determine the subnet to which the host belongs*
What is the purpose of ICMP messages? > to inform routers about network topology changes > to ensure the delivery of an IP packet > to provide feedback of IP packet transmissions > to monitor the process of a domain name to IP address resolution
> to provide feedback of IP packet transmissions*
A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the packet? > when the router receives an ICMP Time Exceeded message > when the RTT value reaches zero > when the host responds with an ICMP Echo Reply message > when the value in the TTL field reaches zero > when the values of both the Echo Request and Echo Reply messages reach zero
> when the value in the TTL field reaches zero*
Match each description with an appropriate IP address. (Not all options are used.) Question
See image (Link-Local addresses are assigned automatically by the OS environment and are located in the block 169.254.0.0/16. The private addresses ranges are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. TEST-NET addresses belong to the range 192.0.2.0/24. The addresses in the block 240.0.0.0 to 255.255.255.254 are reserved as experimental addresses. Loopback addresses belong to the block 127.0.0.0/8.)