ccna ch7

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What is the complete range of TCP and UDP well-known ports?

0 to 1023

What is the decimal equivalent of the binary number 10010101?

149

How many bits are in an IPv4 address?

32

What field content is used by ICMPv6 to determine that a packet has expired?

Hop Limit field

What is indicated by a successful ping to the ::1 IPv6 address?

IP is properly installed on the host

What does a client do when it has UDP datagrams to send?

It just sends the datagrams

During a TCP session, the ___ flag is used by the client to request communication with the server.

SYN

Match each application to its connectionless or connection-oriented protocol.

TCP - HTTP. TCP - FTP. TCP - TELNET. UDP - TFTP. UDP - DHCP

Which transport layer feature is used to guarantee session establishment?

TCP 3-way handshake

Which two IPv4 to IPv6 transition techniques manage the interconnection of IPv6 domains?

dual stack, Tunneling

What is a beneficial feature of the UDP transport protocol?

fewer delays in transmission

Which two parts are components of an IPv4 address? (Choose two.)

network portion. host portion

Which factor determines TCP window size?

the amount of data the destination can process at one time

What is the purpose of ICMP messages?

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 value in the TTL field reaches zero

Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host?

ICMPv6

A technician wishes to use TFTP to transfer a large file from a file server to a remote router. Which statement is correct about this scenario?

The file is segmented and then reassembled in the correct order at the destination, if necessary, by the upper-layer protocol.

A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?

10 segments

Which three IP addresses are private

10.1.1.1, 172.16.4.4, 192.168.5.5

The binary equivalent of the decimal number 232 is

11101000

What is the binary equivalent of the decimal number 232?

11101000

The decimal equivalent of the binary number 10010101 is

149

Match each description with an appropriate IP address. (Not all options are used.)

169.254.1.5 - a link-local address. 192.0.2.123 - a TEST-NET address. 240.2.6.255 - an experimental address. 172.19.20.5 - a private address. 127.0.0.1 - a loopback address.

Which of these addresses is the shortest abbreviation for the IP address: 3FFE:1044:0000:0000:00AB:0000:0000:0057?

3FFE:1044:0:0:AB::57

A total of ___ messages are exchanged during the TCP session termination process between the client and the server.

4

What are three characteristics of multicast transmission?

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 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 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?

destination port number

What does the IP address 172.17.4.250/24 represent?

host address

What is a socket?

the combination of a source IP address and port number or a destination IP address and port number

A message is sent to all hosts on a remote network. Which type of message is it?

directed broadcast

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.

What subnet mask is represented by the slash notation /20?

255.255.240.0

What is the decimal equivalent of the hex number 0x3F?

63

Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices?

ACK, SYN.

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?

Multiplexing

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.

What happens if the first packet of a TFTP transfer is lost?

The TFTP application will retry the request if a reply is not received

What are three parts of an IPv6 global unicast address?

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.

What does a client application select for a TCP or UDP source port number?

a random value in the range of the registered ports

What type of address is automatically assigned to an interface when IPv6 is enabled on that interface?

link-local

What are two types of IPv6 unicast addresses?

loopback, link-local.

Compared to UDP, what factor causes additional network overhead for TCP communication?

network traffic that is caused by retransmissions

Which two TCP header fields are used to confirm receipt of data?

sequence number, acknowledgment number.

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?

stateless DHCPv6

Which two things can be determined by using the ping command?

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.

During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?

the next byte that the destination expects to receive.

What is the purpose of the subnet mask in conjunction with an IP address?

to determine the subnet to which the host belongs.