1. 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?
IP
UDP
Ethernet
a connectionless acknowledgement
an upper-layer, connection-oriented protocol or service
Option 5
2. Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?
Connection 1 - rollover cable
Connection 2 - straight-through cable
Connection 3 - crossover cable
Connection 1 - crossover cable
Connection 2 - rollover cable
Connection 1 - straight-through cable
Connection 2 - crossover cable
Connection 3 - straight-through cable
Option 4
3. Which OSI layer does IP rely on to determine whether packets have been lost and to request retransmission?
application
presentation
session
transport
4. What is true regarding network layer addressing? (Choose three.)
uses a flat structure
prevent broadcasts
heirarchical
uniquely identifies each host
48 bits in length
contains a network portion
Option 3, Option 4, and Option 6 are correct.
5. 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 ipconfig /all command at the host’s command prompt.
Use the ping 127.0.0.1 command at the command prompt.
Use the traceroute command at the command prompt to identify any failures on the path to the gateway.
Use FTP to check for connectivity to remote sites.
Download a troubleshooting tool from the PC manufacturer's website.
Option 2
6.Which type of media is immune to EMI and RFI? (Choose two.)
10 Base-T
10 Base-2
10 Base-5
100 Base-FX
100 Base TX
1000 Base LX
Option 4 and Option 6 are correct.
7. Refer to the exhibit. The command that is shown was issued on a PC. What does the IP address 192.168.33.2 represent?
IP address of the host
default gateway of the host
IP address of the homepage for the host
primary domain name server for the host
IP address of the website resolver1.mooki.local
8. 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.MDA 3.MTA 4.SMTP 5.MTA 6.POP 7.MDA 8.MUA
1.MUA 2.POP 3.MDA 4.SMTP 5.MTA 6.MDA 7.SMTP 8.MUA
1.MUA 2.POP 3.SMTP 4.MDA 5.MTA 6.SMTP 7.POP 8.MUA
1.MDA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MUA 7.POP 8.MDA
1.MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA
9. Which three statements characterize the transport layer protocols? (Choose three.)
TCP and UDP port numbers are used by application layer protocols.
TCP uses port numbers to provide reliable transportation of IP packets.
UDP uses windowing and acknowledgments for reliable transfer of data.
TCP uses windowing and sequencing to provide reliable transfer of data.
TCP is a connection-oriented protocol. UDP is a connectionless protocol.
Option 1, Option 4, and Option 5 are correct.
10. Which OSI layers offers reliable, connection-oriented data communication services?
network
11. 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?
IP address incorrectly entered
network cables unplugged
subnet mask incorrectly entered
network card failure
Option 3
12. Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?
IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2
IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17
IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18
IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5
IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1
IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18
13. As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?
255.255.0.0
255.255.248.0
255.255.252.0
255.255.254.0
255.255.255.0
255.255.255.128
14. What are three characteristics of CSMA/CD? (Choose three.)
Devices can be configured with a higher transmission priority.
A jam signal indicates that the collision has cleared and the media is not busy.
A device listens and waits until the media is not busy before transmitting.
The device with the electronic token is the only one that can transmit after a collision.
All of the devices on a segment see data that passes on the network medium.
After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.
Option 3, Option 5, and Option 6 are correct.
15. Which of the following are the address ranges of the private IP addresses? (Choose three.)
10.0.0.0 to 10.255.255.255
200.100.50.0 to 200.100.25.255
150.150.0.0 to 150.150.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255
127.16.0.0 to 127.31.255.255
16. Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?
172.16.128.0 255.255.255.224
172.16.128.0 255.255.0.0
172.16.128.0 255.255.192.0
172.16.128.0 255.255.224.0
172.16.128.0 255.255.255.192
17. Which password is automatically encrypted when it is created?
vty
aux
console
enable secret
enable password
18. 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 three Telnet lines for remote access.
The entries specify four Telnet lines for remote access.
The entries set the console and Telnet password to "c13c0".
Telnet access will be denied because the Telnet configuration is incomplete.
Access will be permitted for Telnet using "c13c0" as the password.
Option 2 and Option 5 are correct.
19. When must a router serial interface be configured with the clock rate command?
when the interface is functioning as a DTE device
when the interface timers have been cleared
when the connected DTE device is shut down
when the interface is functioning as a DCE device
20. Which two functions of the OSI model occur at layer two? (Choose two.)
physical addressing
encoding
routing
cabling
media access control
Option 1 and Option 5 are correct.
21. A routing issue has occurred in you internetwork. Which of the following type of devices should be examined to isolate this error?
access point
host
hub
router
switch
22. 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.)
192.168.18.38
192.168.18.48
192.168.18.49
192.168.18.52
192.168.18.59
192.168.18.63
Option 3, Option 4, and Option 5 are correct.
23. Refer to the exhibit. What two facts can be determined from the information that is given? (Choose two.)
This exchange is part of the three-way handshake.
The source port indicates that a Telnet session has been initiated.
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