Chapter 8 Study

SMB over NETBIOS

137, 138, 139

POP3 email server

110

You are configuring email on a customer's computer. Which port should you configure for pop.companymail.com? For smtp.companymail.com? a. 143, 25 b. 110, 143 c. 110, 25 d. 25. 110

110, 25

IMAP email server

143

SNMP agent

161

SNMP manager

162

FTP client port number

20

FTP server port number

21

You would like to prevent file transfer protocol traffic from coming into or being sent out of your network via the Internet.Which port will you block on your firewall? a. 443 b. 143 c. 23 d. 21 e. 22

21 (ports 20 and 21 are assigned to FTP. FTP client receives data on port 20, and port 21 is used by the FTP server to listen for commands from an FTP client. FTP is NOT encrypted)

SSH server port

22

Telnet Server port

23

SMTP

25

RDP

3389

LDAP

389

SLP and AFP

427

HTTPS

443

Which of the following are secure protocols, ports, services, or applications? (Select TWO.) a. SLP b. Port 443 c. SMTP d. SSH e. Ports 161/162

443 and SSH

SMTP secure

465

DNS server port

53

You're setting up a secure email server on your local network that you want clients to be able to access from the Internet using IMAP4 and SMTP. Which ports should you open in your firewall? a. 25 and 143 b. 587 and 993 c. 80 and 443 d. 25 and 110

587 and 993

DHCP server port

67

DHCP client port

68

HTTP port

80

IMAP secure

993

POP3 secure

995

Your customer recently installed a new router in her dance studio, as shown in the diagram in Figure 8-56. She then ran Ethernet cables through the drop ceiling to computers in various offices. Without any further testing, which computers do you suspect are experiencing connection problems? Choose all that apply. Figure 8-56 A diagram of a dance studio a. Computer A b. Computer B c. Computer C d. None of them

Computer B

Your company received a call from a historical society inquiring about the possibility of networking a two-century-old building with no existing network. In 1924, someone added electrical outlets to the building, but the layout and design of the building prohibits adding any additional copper or fiber cable. You completed a wireless site survey and concluded that wireless networking is out of the question and will not properly function due to environmental interference.Which of the following could be used to network this building? a. PoE b. EoP c. WAP d. NIC e. NAT

EoP

A hub transmits all incoming messages to all of its ports except the port where the messages came in. A switch usually sends messages only to the destination computer. What information does a switch collect from messages crossing its interfaces so it knows where to send data in future transmissions? a. IP address b. MAC address c. Port number d. FQDN

MAC address

Which of the following is used primarily to allow older computers and NetBIOS-aware applications to communicate over a TCP/IP network? a. NetBT b. UDP c. SSH d. LDAP

NetBT

FTP requires confirmation that a file was successfully transmitted to a client, but it has no built-in mechanism to track this information for itself. What protocol does FTP rely on at the Transport layer of the TCP/IP model to ensure delivery is complete? a. UDP b. HTTP c. SSH d. TCP

TCP

Which of the following protocols guarantees the message is delivered reliably to the destination? a.UDP b.TCP c.DHCP d.LDAP

TCP

You are tasked with securing a small network for a client in which the following requirements must be met:If a user on the private network attempts to send confidential company information to an unauthorized entity, an alert should be triggered.The private trusted network should not be accessible from the public untrusted network.If attacks are coming from the external network, the system should detect and prevent malicious activity.All incoming and outgoing email should be scanned for malware.Which of the following would best meet the requirements of the client? a. Implement a firewall. b. Implement an IPS. c. Implement a UTM appliance. d. Implement identity-based ACLs. e. Implement an IDS.

UTM appliance (c)

A server or service is responsible for sending the contents of cengage.com to your browser when you type cengage.com into the location bar. If this service is malfunctioning, your browser will display a page not found error.What server provides this service? a. Print server b. File server c. DNS server d. Web server e. Authentication server

Web server

Your boss asks you to transmit a small file that includes sensitive personnel data to a server on the network. The server is running a Telnet server and an FTPS server. Why is it not a good idea to use Telnet to reach the remote computer? a. Telnet transmissions are not encrypted. b. Telnet is not reliable and the file might arrive corrupted. c. FTP is faster than Telnet. d. FTP running on the same computer as Telnet causes Telnet not to work.

a

Which of the following are valid IPv6 addresses? Select all that apply. a. fe80::64d2:bd2e:fa62:b911 b. fe80::g90p:bd2e:fa62:b911 c. fe80::64d2:bd2e::b911 d. ::1

a, d (WATCH OUT BC G IS NOT A HEX LETTER)

The network icon in the notification area of a Windows 7 machine is displaying a yellow triangle with a black exclamation point indicating limited connectivity. a. FE80::feba:123:8:9343 b. 192.168.0.1 c. 169.254.1.1 d. 2000:db08:1919:100:feba:123:8:9343 e. 10.0.0.1 f. 172.16.1.1

a,c

Which of the following tools can be used to determine if a network cable is good? Choose all that apply. a. Cable tester b. Crimper c. Loopback plug d. Network multimeter

a,c,d

Which two of the following hosts on a corporate intranet are on the same subnet? a. 192.168.2.143 255.255.255.0 b. 172.54.98.3 255.255.0.0 c. 192.168.5.57 255.255.255.0 d. 172.54.72.89 255.255.0.0

b, d

The accounting department moved its network-attached printer from one side of the office to a more centralized location, making the printer much more accessible to all accounting users. Since the move, the users have not been able to print to the printer. The printer powers on and shows it is ready to accept print jobs. The printer configuration page shows the following output.You disconnect the patch cable from the keystone jack at the new location and move the printer and cable to reconnect it at the original location. The printer begins printing the jobs that failed to print earlier.Which of the following are the most likely reasons for the printer failing to print at the new location? (Select TWO.) a. The DHCP server is down or has a problem with the DHCP service. b. The cable run connecting the new keystone jack to the patch panel is bad. c. The printer needs to have static IP configuration parameters assigned. d. The printer does not have a valid default gateway assigned. e. The patch panel connector for the new location's cable run is not connected to a switch. f. The printer's integrated network interface controller is faulty.

b,e

A technician has been dispatched on an elevated trouble ticket in which the customer's initial complaint was no network connectivity messages on her Windows 10 system. On examination of the system, the technician notices Windows does not recognize any installed NIC. Which of the following is the most likely reason for this issue? a. Network patch cable is disconnected from integrated NIC. b. The default gateway is unreachable or unresponsive. c. Network interface controller is disabled in system BIOS. d. The patch cable is crimped according to the T568B standard.

c

All the users in the maintenance office are complaining about intermittent WLAN connectivity with an existing WAP. It seems the problem started when a new addition was added to the area adjacent to the maintenance office.Which of the following is the most likely reason for this issue? a .A LAN cable was cut during construction of the addition. b. The WAP is faulty and needs to be replaced. c. The addition is causing a reduction in RF signal strength. d. The existing equipment in the maintenance department is emitting excessive RFI.

c

Which of the following indicates the most concise abbreviation of the IPv6 address FEFE:0000:0000:0000:0002:0000:0000:0001? a. FEFE::2::1 b. FEFE::0002:0000:0000:0001 c. FEFE::2:0:0:1 d. FEFE:0:0:0:2:0:0:1 e. ::1

c

A technician is troubleshooting a computer that will not communicate on the network. While diagnosing the network, the technician is viewing a tool that produced the following output.What tool is the technician using that produced this output? a. Cable tester b. Loopback plug c. Tone generator and probe d. Cable stripper

cable tester

A technician is working at a client's office after hours and needs two cables to finish the work but does not have immediate access to prebuilt cables. One cable needed is for a dial-up connection from the dial-up modem to the existing analog POTS jack on the wall. The other cable is for an Ethernet connection from the computer to the existing keystone jack on the wall. The technician has the necessary wire and connectors to make the cables.Which of the following tools will the technician use to make the cables and then verify that they both work properly? (Select THREE.) a. Crimper b. Toner probe c. Cable tester d. Cable stripper e. Punchdown tool f. Loopback plug

crimper, cable tester, cable stripper (a,c,d)

You are cabling a small office and need a custom-length network cable. Neither you nor the customer have a cable long enough for this cable run. The cable will have RJ-45 connectors terminating both ends.Which tool will you use to terminate this cable? a. Crimping tool b. Network multimeter c. Cable tester d. Punchdown tool

crimping tool

Examine the exhibit above."Device A" receives a frame addressed to destination 10-EA-44-09-87-65 from the host on Port 4. How will "Device A" handle this frame? a. Forward the frame to Ports 1-3. b. Forward the frame to Ports 1-4. c. Send the frame to Port 3 only. d. It depends on whether "Device A" is a hub or switch.

d

You received a call from a user who brought her own device to the office but cannot find or connect to the company WLAN. The laptop shows other available wireless networks in the building. This user and the other users in her department are connected to the company WLAN and can browse to multiple websites with no problems from their company-assigned laptops.Which of the following is the most likely reason the user cannot find the company WLAN from her own device? a. The company WAP has its radio turned off. b. The company WAP is powered down or disconnected. c. The laptop's wireless network is toggled to the off position. d. The company WAP has SSID broadcast disabled. e. The user's laptop NIC has MAC address filtering enabled.

d

Your SOHO router has failed and you have installed a new router. The old router's static IP address on the network is 192.168.0.1. The new router has a static IP address of 10.0.0.1. You go to a computer to configure the new router and enter 10.0.0.1 in the browser address box. The router does not respond. You open a command prompt window and try to ping the router, which does not work. Next, you verify that the router has connectivity and you see that its local connection light is blinking, indicating connectivity. What is the most likely problem and its best solution? a. The computer you are using to configure the router has a corrupted TCP/IP configuration. Restart the computer b. The router is defective. Return it for a full refund. c. The computer and the router are not in the same subnet. Release and renew the IP address of the computer. d. The computer and the router are not in the same subnet. Change the subnet mask assigned to the computer.

different subnet, release and renew IP address of computer (c)

A technician is being asked to provide a network solution that will reduce network broadcast traffic on a private LAN by implementing VLANs.Which of the following will the technician implement? a. Enable quality of service on an unmanaged switch. b. Enable MAC filtering on a managed switch. c. Subnet the LAN and implement VLANs on a managed switch. d. Configure an IP address on the subnet to a managed switch.

subnet (c)