Ch 1

Hexadecimal numbers are often preceded by "0x." However, when converting a hexadecimal number, do not include the "0x" in the entry on the calculator. Convert the following hexadecimal numbers to binary numbers: 0x0016 = 0x00F8 = 0x00B2B = 0x005A = 0x1234 =

0x0016 = 10110 0x00F8 = 11111000 0x00B2B = 101100101011 0x005A = 1011010 0x1234 = 1001000110100

Convert the following binary numbers to hexadecimal notation: 100 = 1011 = 111101 = 11111000 = 10110011 = 00000001 =

100 = 4 1011 = B 111101 = 3D 11111000 = F8 10110011 = B3 00000001 = 1

Convert the following binary numbers to decimal: 1011 = 0001 1011 = 1010 1010 = 0001 1111 0100 = 0101 1101 1101 = 0011 1110 0000 1111 =

1011 = 11 0001 1011 = 27 1010 1010 = 170 0001 1111 0100 = 500 0101 1101 1101 = 1501 0011 1110 0000 1111 = 15887

Convert the following decimal numbers to hexadecimal notation: 13 = 240 = 255 = 58880 = 65535 =

13 = D 240 = F0 255 = FF 58880 = E600 65535 = FFFF

Convert the following decimal numbers to binary numbers using a calculator or by manual calculations. (To access Windows Calculator in Windows 10, type calculator in the search box and press Enter.) 14 = 77 = 128 = 223 = 255 =

14 = 1110 77 = 1001101 128 = 10000000 223 = 11011111 255 = 11111111

What is the fundamental distinction between a Layer 2 switch and a router?

A Layer 2 switch belongs only to its local network, and a router belongs to two or more

What is the fundamental distinction between a MAN and a WAN?

A MAN covers a small geographical area, and a WAN covers a large geographical area.

What is the fundamental distinction between a node and a host?

A host is a computer that hosts a resource on the network, and a node is any computer or device that can be addressed on the network.

A computer is unable to access the network. When you check the LED lights near the computer's network port, you discover the lights are not lit. Which layer of the OSI model are you using to troubleshoot this problem? At which two layers does the network adapter work?

Physical Layer. Link Layer and Physical Layer.

At the Data Link layer, which type of network address is used to identify the receiving node?

Physical address, MAC address, hardware address, or Data Link layer address

What is a message called that is delivered by TCP? What is a message called that is delivered by UDP? At which layer do the two protocols work?

Segment. Datagram. Transport layer.

True or false? During a Quick Assist session, the technician providing assistance has the same rights and privileges as the user account that is being assisted (the host computer).

True

Which email protocol allows an email client to download email messages to the local computer? a. POP3 b. TCP c. IMAP4 d. SMTP

a. POP3

Which application embedded in Windows operating systems allow remote control of a computer and uses the RDP secure protocol for transmissions? a. Remote Desktop b. Telnet c. SSH d. SFTP

a. Remote Desktop

What device determines the point where one local network ends and another local network begins? a. Router b. Client computer c. Server d. Network adapter

a. Router

Which two encryption protocols might be used to provide seure transmissions for browser and web server communications? a. SSL and TLS b. HTTP and HTTPS c. SSL and HTTP d. TCP and UDP

a. SSL and TLS

In the other network topology question, suppose a new switch is connected to the first switch by way of a network cable, and three computers are connected to the new switch. Which network topology is in use now? a. Star-bus b. Star c. Mesh d. Hybrid

a. Star-bus

Is 172.17.250.25 a public or private IP address? How do you know? a. Private, because the last octet is 25 b. Private, because the first two octets are 172.17 c. Public, because the first three octets are 172.17.250 d. Public, because the first octet is 172

b. Private, because the first two octets are 172.17

The IPv6 address for an Ethernet connection begins with FE80::/64. What does this tell you about the address? a. The address is a global address b. The address was assigned without involving a DHCPv6 server c. The address is a multicast address d. The address is an Automatic Private IP Address (APIPA)

b. The address was assigned without involving a DHCPv6 server

Which choice requires installation of a virtual switch to access the internet? a. VMware b. VirtualBox c. Hyper-V d. All of these

c. Hyper-V

At what layer of the OSI model does a basic low end router function? a. Layer 1 b. Layer 2 c. Layer 3 d. Layer 4

c. Layer 3

A network consists of five computers, all running Windows 10 Professional. All the computers are connected to a switch, which is connected to a router, which is connected to the Internet. Which networking model does the network use? a. Star-bus b. Ring c. Peer-to-peer d. Hybrid

c. Peer-to-peer

Within which of the following OSI layers would a malfunction caused by a bad switch port reside? a. Transport b. Network c. Physical d. Application

c. Physical

Which type of address is used at the Transport layer to identify the receiving application? a. IP address b. MAC address c. Port d. Protocol

c. Port

What value is used to tell the OS which application running on the computer is to receive a request from a client computer? a. MAC address b. IP address c. Port number d. Subnet mask

c. Port number

What mail protocol is used to send mail messages to a server? a. POP3 b. IMAP4 c. SMTP d. HTTPS

c. SMTP

A network consists of seven computers and a network printer, all connected directly to one switch. Which network topology does this network use? a. Mesh b. Hybrid c. Star d. Star-bus

c. Star

Which of the following OSI layers is responsible for the segmentation, multiplexing, flow control and host-to-host communication services for applications? a. Presentation Layer b. Network Layer c. Transport Layer d. Datalink Layer e. Session Layer

c. Transport Layer

Write the following IPv6 address using a short hand method: 2001:0:4147:0:0:1c32:0:fe99. a. 2001:0:4147:0:0:1c32:0:fe99 b. 2001::4147::1c32:0:fe99 c. 2001::4147:0:0:1c32:0:fe99 d. 2001:0:4147::1c32:0:fe99

d. 2001:0:4147::1c32:0:fe99

At what port does an SMTP email server listen to receive email from a client computer? a. 3389 b. 143 c. 110 d. 25

d. 25

You are informed that all the users within the network are unable to access the Internet. You decide to start troubleshooting from the Physical layer of the OSI model. Which of the following approaches would you use to troubleshoot this problem? a. Divide and conquer approach b. Random layer approach c. Top down approach d. Bottom up approach

d. Bottom up approach

You are examining a network problem that many users are experiencing, and you decide to begin your investigation at the network layer of the OSI model. Which of the following troubleshooting approaches are you using? a. Top down approach b. Random layer approach c. Bottom up approach d. Divide and conquer approach

d. Divide and conquer approach

At what layer of the OSI model does a network switch normally operate? a. Layer 4 b. Layer 5 c. Layer 3 d. Layer 2

d. Layer 2

HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the OSI model? a. Layer 4 b. Layer 5 c. Layer 6 d. Layer 7

d. Layer 7

The proper handling procedures for substances such as chemical solvents is typically outlined in which of the following? a. Toxic Chemical Safety Procedure (TCSP) b. Dangerous and Hazardous Waste Disposal Sheet (DHWDS) c. Environmental Chemical Hazard Sheet (ECHS) d. Material Safety Data Sheet (MSDS)

d. Material Safety Data Sheet (MSDS)

Bluetooth creates what type of network? a. MAN b. WAN c. CAN d. PAN

d. PAN

Convert the following hexadecimal numbers to decimal: 0x0013 = 0x00AB = 0x01CE = 0x812A =

0x0013 = 19 0x00AB = 171 0x01CE = 462 0x812A = 33066

What is the name of the domain controller database that Windows Server 2016 uses to store data about user access and resources on the network?

Active Directory

A user complains that he cannot access a particular website, although he is able to access other websites. At which layer of the OSI model should you begin troubleshooting this problem?

Application Layer

A user complains that Skype drops her videoconference calls and she must reconnect. At which layer of the OSI model should you begin troubleshooting? Which OSI layer is responsible for not dropping the Skype connection?

Application Layer. Session Layer.

At the Network layer, what type of address is used to identify the receiving host?

IP address

The 6-digit security code expires after how many minutes? a. 10 b. 15 c. 20 d. 30

a. 10

How many hex numerals are in a MAC address? How many bits are in a MAC address? a. 12, 48 b. 12, 64 c. 32, 128 d. 32, 32

a. 12, 48

Before you can host a Remote Desktop connection on your computer, which port must be opened? a. 3389 b. 143 c. 110 d. 25

a. 3389

In the TCP/IP model, what layer combines the responsibilities of the Application, Presentation, and Session layers from the OSI model? a. Application b. Internet c. Transport d. Link

a. Application

In the network model question, suppose one computer is upgraded from Windows 10 Professional to Windows Servers 2016. Which networking model can the network now support that it could not support without the upgrade? a. Client-server b. Hybrid c. Star-bus d. Ring

a. Client-server

You are on the host computer preparing for a Quick assist session. Which choice do you make to begin? a. Get assistance b. Give assistance

a. Get assistance

In the client-server model, what is the primary protocol used for communication between a browser and web server? a. HTTP b. SSL c. FTP d. TCP

a. HTTP

A computer's IP address is 192.168.25.1 and its subnet mask is 255.255.255.0. Is a computer with the IP address of 192.168.25.254 on its own network or another network? a. Its own network b. Another network c. There is not enough information to answer the question d. The other computer is on the Internet

a. Its own network

What is one advantage of NAT? a. The company can lease fewer public IP addresses b. The company does not need to use a router when NAT is used c. The company can lease fewer private IP addresses d. The company does not need to support a DHCP server

a. The company can lease fewer public IP addresses

What occurs if a network layer protocol is aware that a packet is larger than the maximum size for its network? a. The packet will be divided into smaller packets using fragmentation b. The protocol will send an ICMP message to the destination, requesting a larger packet size be allowed c. The packet will be dropped silently, requiring the communicating application try again d. The protocol will notify a network router capable of receiving the packet and a new path will be used to the destination

a. The packet will be divided into smaller packets using fragmentation

Which choice would not be recommended to install on a host running Hyper-V? a. VirtualBox b. VMware c. Hypervisor d. All of these

a. VirtualBox

To get started with Quick Assist, You need to enter a 6-digit security code. Which is the correct code? a. 321852 b. 312862 c. 318252 d. 312825

b. 312862

How long, in bits, is a typical MAC address? a. 32 bits b. 48 bits c. 64 bits d. No two MAC addresses are the same length

b. 48 bits

Which choice requires HAV on a 64-bit host? a. Oracle VirtualBox b. 64-bit operating system c. Hyper-V d. All of these

b. 64-bit operating system

What type of server resolves fully qualified domain names to IP addresses? a. Email server b. DNS server c. DHCP server d. Web server

b. DNS server

You are on the client computer preparing for a Quick assist session. Which choice do you make to begin? a. Get assistance b. Give assistance

b. Give assistance

Which email protocol allows an email client to read mail stored on the mail server? a. TCP b. IMAP4 c. POP3 d. SMTP

b. IMAP4

In the hexadecimal system, what decimal value does the letter A represent? a. 1 b. 16 c. 10 d. 100

c. 10

What is the subnet mask for 192.168.212/24, written in CIDR notation? a. 255.255.0.0 b. 255.255.24.0 c. 255.255.255.0 d. 255.255.255.255

c. 255.255.255.0

What is the most popular web server application? a. Lighttpd b. Microsoft Internet Information Services c. Apache d. NGINX

c. Apache

Which of the following OSI layers is involved with media access control, hardware addressing and the local delivery of frames between devices on the same LAN? a. Network Layer b. Physical layer c. Datalink layer d. Transport Layer

c. Datalink layer

Transport layer protocols are responsible for what part of networking? a. Determining the speeds of transmissions on networks b. Encrypting data within an application c. Delivering messages over networks d. Controlling the routes a message takes over multiple networks

c. Delivering messages over networks

Which choice is required for a virtual machine manager to be installed on a system? a. VM b. UEFI BIOS c. HAV d. ISO

c. HAV

Which choice is a virtual hard disk file? a. iso b. vma c. vxd d. vhdx

d. vhdx