When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the retransmission of missing data?

An upper-layer connection-oriented protocol or service

[image]Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?

Connection 1 - straight-through cable

Connection 2 - crossover cable

Connection - straight-through cable

Which OSI layer does IP rely on to determine whether packets have been lost and to request retransmission?

transport

[image]Refer to the exhibit. What is the correct destination socket number for a web page request from Host A to the web server?

198.133.219.25:80

A PC can not connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?

Use the ping 127.0.0.1 command at the command prompt.

Which type of media is immune to EMI and RFI?

100 Base-FX

1000 Base LX

[image]

Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correctly identifies the component or protocol used at each numbered stage of the diagram.

1.MUA 2.SMTP 3.MTA 4.SMPT 5.MTA 6.MDA 7.POP 8.MUA

What is true regarding network layer addressing (choose 3)

• Heirarchial
• Uniquely identifies each host
• contains a network portion

Which OSI layers offers reliable, connection-oriented data communication services?

Transport

[image]

Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to 127.0.0.1 was successful, the replacement computer can not access the company network. What is the likely cause of the problem?

subnet mask incorrectly entered

[image]Refer to the exhibit. The command that is shown was issued on a PC. What does the IP address 192.168.33.2 represent?

Primary domain name server for the host

[image]Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?

Leaving Dallas

[image]Refer to the exhibit. What two facts can be determined from the information that is given? (Choose two.)

• The destination port indicates that an HTTP session has been initiated.
• The data listed is associated with the transport layer.

[image]

Refer to the exhibit. On the basis of the IP configuration that is shown, what is the reason that Host A and Host B are unable to communicate outside the local network?

The gateway address was assigned a broadcast address.

Which of the following are the address ranges of the private IP addresses? (choose 3)

• 10.0.0.0 to 10.255.255.155
• 172.16.0.0 to 172.31.255.255
• 192.168.0.0 to 192.168.255.255 

Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?

172.16.128.0 255.255.224.0

Which password is automatically encrypted when it is created?

enable secret

Which three statements characterize the transport layer protocols? (choose 3)

• TCP and UDP port number are used by application layer protocols.
• TCP uses windowing and sequencing to provide reliable transfer of data
• TCP is a connection-oriented protocol. UDP is a connectionless protocol.

When must a router serial interface be configured with the clock rate command?

When the interface is functioning as a DCE device.

Which two functions of the OSI model occur at layer two? (choose 2)

• physical addressing
• media access control

A routing issue has occured in your internetwork. Which of the following type of devices should be examined to isolate this error?

router

[image]Refer to the exhibit. With the router running NAT, what IP addresses can be applied to the computer to allow access to the Internet? (Choose three)

• 192.168.18.49
• 192.168.18.52
• 192.168.18.59

Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two)

Router(config)# line vty 0 3 Router(config-line)# password c13c0 Router(config-line)# login

• The entries specify four Telnet lines for remote access.
• Access will be permitted for Telnet using "c13c0" as the password.

As network administrator, what is the subnet mask that allows 510 hosts hiven the IP address 172.30.0.0?

255.255.254.0