Question 1

As a technician of ABCD.com, you are asked to configure a PC that needs to be connected to the Internet. Which two things you will check for FIRST?
A)Host name of the computer and the IP address of the default gateway
B)IP address of the DNS server and IP address of the default gateway
C)IP address of the e-mail server and IP address of the DHCP server
D)Host name of the computer and IP address of the e-mail server

Accepted Answer

While configuring the IP address on a computer, the first two things to check for are the IP addresses of the default gateway and the DNS server. Email-server, DHCP server, and hostnames are not crucial while configuring the IP address.
Key Takeaway: The default gateway is an ISP-provided device that connects the user to the Internet. It can be a DSL or cable modem. Along with the default gateway details, the user also needs to enter valid DNS server IPs, preferably two.

Question 2

Which of the following network types is created by a Bluetooth connection?
A)LAN
B)PAN
C)WAN
D)MAN

Accepted Answer

A Bluetooth connection is used in created a PAN, or Personal Area Network.
Key Takeaway - A Personal Area Network is defined as a smaller computer network used mostly for communication between smaller devices, such as smartphones. Bluetooth creates a PAN when establishing a connection between two or more of these devices. A Local Area Network (LAN) is usually a group of computers in a small area, a Wide Area Network (WAN) is comprised of several LANs over a large geographic distance. A Municipal Area Network is similar to a WAN, but is defined as encompassing a specific municipal area (such as a city).

Question 3

Which of the following specific network devices is required for communication over POTS?
A)Ethernet NIC
B)WAP
C)Modem
D)PSTN

Accepted Answer

A modem is required for communication of POTS, or Plain-Old Telephone System.
Key Takeaway - A modem changes digital signals to analogue signals (and vice-versa) so computers can communicate over the Plain-Old Telephone System, which is also referred to as the Public Switched Telephone Network. An Ethernet NIC, or Network Interface Card, allows communication over an Ethernet Network, while a WAP provides wireless access to client computers.

Question 4

As a part of a troubleshooting process, John wants to check the table that maintains the TCP/IP to MAC address translation on his computer. Which utility should he use?
A)arp
B)ping
C)nbtstat
D)netstat

Accepted Answer

Arp maintains a table with IP to MAC address mapping. This command provides the functionality to add, delete, or display the IP address for Media Access Control address translation.
Key Takeaway: When the node's IP address is known, you should use the arp command to find the MAC address of a node with an IP address on the same physical network.

Question 5

Which of the following protocols is used to send messages to the e-mail server for relaying?
A)Simple Mail Transfer Protocol (SMTP)
B)Post Office Protocol, version 3 (POP3)
C)Internet Control Message Protocol (ICMP)
D)Internet Message Access Protocol, version 4 (IMAP4)

Accepted Answer

SMTP is a text-based protocol used to send messages to a mail server for relaying. The mail sender communicates with the mail receiver by issuing simple command strings and supplying necessary data over a TCP connection.
Key Takeaway: SMTP, unlike POP or IMAP, is a delivery protocol, not a retrieval protocol. It cannot pull messages from a remote server on demand. POP and IMAP are specifically designed for retrieving messages and managing mailboxes.

Question 6

What should you do if you do not want your router to broadcast the name out to anyone who wants to connect to it?
A)Enable MAC filtering
B)Disable MAC filtering
C)Power off your router
D)Disable SSID broadcast

Accepted Answer

If you do not want your router to broadcast the name of your network, you must disable the SSID broadcast feature.
Key Takeaway: Most wireless access points, APs, and routers automatically transmit the name of the network name (SSID) at regular intervals. This feature of Wi-Fi network protocols is intended to allow clients to dynamically discover and roam between WLANs. For improved security, you can disable this feature to preclude automatic discovery of your WLAN. Once your wireless clients are manually configured with the right SSID, they no longer require these broadcast messages. Disabling the SSID broadcast is just one of many techniques for tightening security on a Wi-Fi network. This technique is not 100% effective, as hackers can still detect the SSID by sniffing different messages in the Wi-Fi protocol.

Question 7

Billy is installing a wireless access point at his home and he wants to encrypt and secure the data as strongly as possible. Which technology should he use?
A)WEP
B)WPA
C)TLS
D)WPA2

Accepted Answer

WPA2 is the best technology for securing wireless communications.
Key Takeaway: WPA2, or Wi-Fi Protected Access version 2, is currently how wireless communications should be secured. WEP, or Wired Equivalent Privacy, should never be used as it has been demonstrated to be very easy to hack. TLS, or Transport Layer Security, is the successor to SSL in the TCP/IP suite, but has nothing to do with wireless security.

Question 8

The cables that lead from patch panels (in the wall) to computers and are placed above ceiling tiles are called:
A)STP cables.
B)Coaxial cables.
C)Plenum cables.

Accepted Answer

The word plenum refers to an air-filled space in a structure, especially one that receives air from a blower for distribution (as in a ventilation system).
Key Takeaway: A plenum cable is a type of CAT5e cable that has a jacket that meets specific ANSI requirements to be flame retardant and have low smoke production.

Question 9

George has just attached a computer with an NIC to a network. He is not sure if the NIC has physical connectivity with the network. Which of the following ensures there is successful physical connectivity between the NIC and the network?
A)Being able to ping the local host successfully
B)Glowing NIC LEDs.
C)Device Manager shows that the NIC is OK.
D)Able to boot the PC successfully.

Accepted Answer

The best way to ensure that physical connectivity between the NIC and the network is valid is to check the glowing NIC LEDs. As long as there is a packet exchange between the computer and the network, the LEDs glow.
Key Takeaway: When troubleshooting a network, it is very crucial to check the NIC status before you proceed further. The green LINK LED on the NIC confirms the integrity of physical connectivity.

Question 10

What is the default subnet mask for the IP address 192.168.10.10?
A)255.255.255.0
B)255.0.0.0
C)255.255.0.0
D)255.255.255.255

Accepted Answer

The default subnet mask for the IP address 192.168.10.10 is 255.255.255.0.
Key Takeaway: The method to find out the subnet mask for a given IP address is:
1. Check the class of the IP address given (e.g. A ).
2. Determine the position in the alphabet of the class designation. A is the first letter of the alphabet, so for a class A IP address, you should come up with a value of 1. For a class B IP address, 2.
3. The number of 255s in the subnet mask is the number you determined above. For example, class A will have one 255, class B will have two 255s, and class C will have three 255s.

Question 11

A large company has three offices located in different parts of the same city, and have created a network connecting the three offices. What network type best defines this setup?
A)LAN
B)PAN
C)WAN
D)MAN

Accepted Answer

A MAN, or Municipal Area Network, best defines the network of a company that has three offices connected in one city.
Key Takeaway - A Municipal Area Network (MAN) is similar to a Wide-Area Network (WAN) since it is generally made up of several Local-Area Networks (LANs), however it is generally not as geographically vast. MANs are most often employed by a company that contains several offices, connected within the same municipal area (i.e. city).

Question 12

Which 802.11x standard only operates at 5 GHz?
A)802.11a
B)802.11b
C)802.11g
D)802.11n

Accepted Answer

802.11a is the only 802.11x (wireless) standard to operate only at 5GHz.
Key Takeaway - 802.11a operates at 5GHz with a maximum data transfer rate of 54Mbps. 802.11n operates at both 5GHz and 2.4Ghz with a maximum data transfer rate of 600Mbps. 802.11b and g both operate at a frequency of 2.4GHz.

Question 13

A user wants to be able to access a computer in his home LAN from anywhere in the world using RDP. The user has a SOHO router setup in his home. What service built-into the SOHO router will be most helpful in accomplishing this?
A)Port Forwarding
B)NAT
C)Port Triggering
D)WPS

Accepted Answer

The user will have to utilize the Port Forwarding service on his SOHO Router to access his LAN computer via RDP.
Key Takeaway - Port Forwarding allows you to forward external network requests to an internal IP address and port, hence allowing the RDP service to function. Port Triggering operates the other way around, allowing outgoing ports to be used by special internal applications. NAT (Network Address Translation) allows an internal node to mask its IP address outside the network, and is used in this process, but is not as important as Port Forwarding. WPS (Wi-Fi Protected Setup) is a standard that allows connecting to the SOHO router easy for beginning users-it should be disabled for the most secure Wireless Network.

Question 14

Which of the following protocols best provides network printers with the ability to notify the administrator of an issue?
A)LDAP
B)SNMP
C)SMB
D)SSH

Accepted Answer

SNMP (Simple Network Management Protocol) provides network printers with the ability to notify the administrator of issues.
Key Takeaway - SNMP is used to monitor and manage devices on the network, and is often incorporated with a Network Monitoring System (NMS), providing the administrator with an overview of network devices, including routers, computers, and printers. LDAP (Lightweight Directory Access Protocol) allows for directory synchronization and access, SMB (server message blocks), allowing the sharing of files and printers, and SSH (Secure Shell) delivers a secure method of remote access.

Question 15

Internet Protocol version 6 (IPv6) has an address size of _________ bits and uses _______ values to indicate addresses
A)32; numeral
B)64; numeral
C)128; hexadecimal
D)128; numeral

Accepted Answer

IPv6 has an address size of 128 bits and uses a hexadecimal value for addresses.
Key Takeaway: Since the address size for an IPv6 address is 128 bits, the total number of addresses is practically inexhaustible. An IPv6 address is displayed as hexadecimal vales separated by colons, for example: 3ffe:1900:4545:3:200:f8ff:fe21:67cf

Question 16

A network administrator wants to install fiber optic cable that will work at the fastest speed possible over longer distances. What type of fiber should the administrator purchase?
A)Full-Duplex
B)Multimode
C)Single-Mode
D)Half-Duplex

Accepted Answer

Single-Mode fiber is the fastest fiber media available for long distances.
Key Takeaway: Single-mode fiber can be run farther than most twisted-pair cable with much higher speeds (up to and beyond 10Gbps). Multimode fiber has a larger diameter and can transmit at must faster speeds, but due to distance limitations it is usually only used in server rooms and for backbone connections. Full- and half-duplex apply to how the NIC communicates, not the type of media.

Question 17

Nick bought a new Ethernet NIC and installed it on his new PC. He observes that the link lights on the NIC are flashing orange. What do flashing orange link lights usually indicate?
A)There are collisions on the network.
B)Data is being transmitted to the computer.
C)The network cable is faulty.
D)The network is down.

Accepted Answer

Orange blinking lights on an NIC indicate collisions on the network. Solid green lights represent successful data transfer. If the network is down or the cable is faulty, the light will not glow at all.
Key Takeaway: Whenever an NIC LED shows an orange light, it is time to consider segmenting the network.

Question 18

To complete the installation of an IDF or MDF, which of the following cable tools are you most likely to need?
A)Crimper
B)Stripper
C)Punch-Down
D)Cable Tester

Accepted Answer

To complete the installation of an IDF or MDF, you will most likely need the Punch-Down tool.
Key Takeaway: A punch down tool punches individual wires into the patch panel of an RJ45 jack for termination-this usually looks like a large cabinet with hundreds of small wires running throughout it. Since the Main Distribution Facility (MDF) and Intermediate Distribution Facility (IDF) are where these drops are terminated, using a punch down tool will be necessary. A Stripper and Crimper are used to create the actual cable, and a cable tester will be used to test its functionality.

Question 19

Which of the following best describes communication on an old-fashioned walkie-talkie?
A)Full-Duplex
B)Half-Duplex
C)Duplex
D)Latency

Accepted Answer

Half-duplex best describes the communication on an old-fashioned walkie-talkie.
Key Takeaway: Half-duplex communication allows a device to send and receive data, but not at the same time, unlike full-duplex communication which (like a telephone) allows sending and receiving at the same instant. Latency describes the delay it takes for data to reach its destination. Duplex, by itself, does not relate to network communication.

Question 20

The proper command line syntax for mapping a network share to a local drive letter in Windows is:
A)NET USE z: \Server\ShareName
B)NET SHARE z: \Server\ShareName
C)NET USE z: //Server/ShareName
D)NET SHARE z: //Server/ShareName

Accepted Answer

NET USE z: \Server\ShareName is the correct syntax for mapping a network share to a local drive letter in windows.
Key Takeaway: The NET USE command, followed by the Server and ShareName (represented by \Server\ShareName) is the only correct syntax for mapping a shared resource to a local drive letter. Replace Z with the drive letter, Server with the server name, and ShareName with the name of the shared storage.

Quiz 3: Networking

As a technician of ABCD.com, you are asked to configure a PC that needs to be connected to the Internet. Which two things you will check for FIRST?

Which of the following network types is created by a Bluetooth connection?

Which of the following specific network devices is required for communication over POTS?

As a part of a troubleshooting process, John wants to check the table that maintains the TCP/IP to MAC address translation on his computer. Which utility should he use?

Which of the following protocols is used to send messages to the e-mail server for relaying?

What should you do if you do not want your router to broadcast the name out to anyone who wants to connect to it?

Billy is installing a wireless access point at his home and he wants to encrypt and secure the data as strongly as possible. Which technology should he use?

The cables that lead from patch panels (in the wall) to computers and are placed above ceiling tiles are called:

George has just attached a computer with an NIC to a network. He is not sure if the NIC has physical connectivity with the network. Which of the following ensures there is successful physical connectivity between the NIC and the network?

What is the default subnet mask for the IP address 192.168.10.10?

A large company has three offices located in different parts of the same city, and have created a network connecting the three offices. What network type best defines this setup?

Which 802.11x standard only operates at 5 GHz?

A user wants to be able to access a computer in his home LAN from anywhere in the world using RDP. The user has a SOHO router setup in his home. What service built-into the SOHO router will be most helpful in accomplishing this?

Which of the following protocols best provides network printers with the ability to notify the administrator of an issue?

Internet Protocol version 6 (IPv6) has an address size of ___ bits and uses _ values to indicate addresses

A network administrator wants to install fiber optic cable that will work at the fastest speed possible over longer distances. What type of fiber should the administrator purchase?

Nick bought a new Ethernet NIC and installed it on his new PC. He observes that the link lights on the NIC are flashing orange. What do flashing orange link lights usually indicate?

To complete the installation of an IDF or MDF, which of the following cable tools are you most likely to need?

Which of the following best describes communication on an old-fashioned walkie-talkie?

The proper command line syntax for mapping a network share to a local drive letter in Windows is: