CCNA 2

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

It just sends the datagrams. It queries the server to see if it is ready to receive data. It sends a simplified three-way handshake to the server. It sends to the server a segment with the SYN flag set to synchronize the conversation.

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

1 segment 10 segments 100 segments 1000 segments

A client creates a packet to send to a server. The client is requesting SSH service. What number will be used as the destination port number in the sending packet?

22 69 67 80

What is an example of network communication that uses the client-server model?

A user uses eMule to download a file that is shared by a friend after the file location is determined. A workstation initiates an ARP to find the MAC address of a receiving host. A user prints a document by using a printer that is attached to a workstation of a coworker. A workstation initiates a DNS request when the user types www.cisco.com in the address bar of a web browser.

Which three protocols operate at the application layer of the TCP/P model? (Choose three.)

ARP TCP UDP FTP POP3 DHCP

Which application layer protocol uses message types such as GET, PUT, and POST?

GET command

Which three fields are used in a UDP segment header? (Choose three.)

Source Port, Destination Port, Length, and Checksum

Which three statements describe a DHCP Discover message? (Choose three.)

The source MAC address is 48 ones (FF-FF-FF-FF-FF-FF). The destination IP address is 255.255.255.255. The message comes from a server offering an IP address. The message comes from a client seeking an IP address. All hosts receive the message, but only a DHCP server replies. Only the DHCP server receives the message

In what two situations would UDP be better than TCP as the preferred transport protocol? (Choose two.)

when applications need to guarantee that a packet arrives intact, in sequence, and unduplicated when a faster delivery mechanism is needed when delivery overhead is not an issue when applications do not need to guarantee delivery of the data when destination port numbers are dynamic

Which field in the TOP header indicates the status of the three-way handshake process?

window reserved checksum control bits

A client creates a packet to send to a server. The client is requesting SNMP service. What number will be used as the destination port number in the sending packet?

161 443 110 80

A client creates a packet to send to a server. The client is requesting FTP service. What number will be used as the destination port number in the sending packet?

21 69 67 80

A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received three packets of data from the PC?

6001 3001 3000 1500

Which two fields are included in the TCP header but not in the UDP header? (Choose two.)

sequence number and window


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