Chapters 1 - 6

What is the IPv4 loopback address? What is the IPv6 loopback address?

127.0.0.1 ::1/128

How many bits does an IPv6 address contain?

128

What is the range of IP addresses that might be assigned by APIPA

169.254.0.1 - 169.254.255.254

FTP sometimes uses a random port for data transfer, but an FTP server always, unless programmed otherwise, listens to the same port for session requests from clients. What port is the FTP server listening on?

21

Suppose you want to change the default port for RDP as a security precaution. What port does RDP use by default, and from what range of numbers should you select a private port number?

3389 (default) 49152-65538

A routing protocol's reliability and priority are rated by what measurement? A. Routing table B. MTU C. Latency D. AD

AD (Administrative Distance)

What is the name of the domain controller database that Windows Server 2012 R2 uses to store data about user access and resources on the network?

Active Directory

What veriosn of smb can be used across Windows, UNIX, and other operating systems? A. SIP (Session Initiation Protocol) B. RDP (Remote Desktop Protocol) C. CIFS (Common Internet File System) D. MGCP (Media Gateway Control Protocol)

CIFS (Common Internet FIle System_

Which of the following cabling types is not recognized by the TIA/EIA for horizontal wiring? A. UTP B. STP C. Coaxial D. Fiber-optic

Coaxial

What generator component converts DC power from the generator to AC power that the electrical infrastructure in data center can use? A. Inverter B. Rectifier C. Transformer D. Voltage regulator

Inverter

What does a loopback plug do?

It allows you to test the NIC to see if it will pass a physical component test, by crossing the receive and transmit lines. (echo)

What database does a router consult before determining the most efficient path for delivering a message?

It's routing table

What device provides a central control portal for all devices on a rack? A. Server rails B. Rack ears C. Rack-monitoring system D. KVM switch

KVM (Keyboard, video, and mouse) switch

In which layers of the OSI model do NICs operate? A. Layers 5, 6, and 7 B. Layers 1 and 2 C. Layer 4 D. Layers 2 and 3

Layers 1 and 2

What version of the ping command do you use in Windows with IPv6 addresses? What version do you use on a Linux system

Linux: ping6 Windows: ping -6

What kind of web site allows you to remotely collect network routing information back to your actual location?

Looking glass site

At which OSI layer does IP operate? A. Application layer B. Transport layer C. Network layer D. Data Link layer

Network layer / 3

Which email protocol allows an email client to download email messages to the local computer? A. IMAP4 B. SMTP C. TCP D. POP3

POP3

You issue a transmission from your workstation to the following socket on your LAN: 10.1.1.145:110. Assuming your network uses standard port designations, what Application layer protocol are you using?

POPv3

What kind of networking device on today's racks does nothing to do with data transmitted on a line other then pass it along through the connection? A. Patch panel B. Punch-down block C. 110 block D. Hub

Patch panel

When determining whether a local network has any NetBIOS traffic, do you use the nslookup utility in interactive mode or a packet analyzer such as Wireshark?

Wireshark

When running a scan on your computer, you find that a session has been established with a host at the address 208.85.40.44:80. Which protocol is in use for this session? What command-line utility might you use to find out who the host is?

Port 80 nslookup

A user complains that he cannot access a particular Web site, although he is able to access other Web sites. At which layer of the OSI model should you begin trouble- shooting the problem?

Application layer/7

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/7 Session layer/6

What number does a host use to identify the application involved in a transmission? A. IP address B. MAC address C. Port number D. Sequence number

Port number

Providing a backup power source is called________. A. power conversion B. power redundancy C. power inversion D. line conditioning

Power redundancy

What is the very beginning of an Ethernet frame called? A. Header B. Data C. Preamble D. Trailer

Preamble

List three interior gateway protocols (IGPs).

RIP / RIPv2 OSPF IS-IS

Which session layer protocol is a streaming live video teleconference likely to use on the network? A. UDP B. SMTP C. RTP D. TCP

RTP

What is the unit of measurement that defines the space available in a rack? How tall standard racks?

RU (Rack Unit) 42U or 6 feet

Which application embedded in Windows operating systems allows remote control of a computer and uses the RDP secure protocol for transmissions? A. Telnet B. Remote Desktop C. FTP D. SSH

Remote Desktop

What service provided by Windows Server 2012 R2 allows a computer to serve up applications to other computers on the network? A. Remote Desktop Services B. Windows 8.1 C. File Transfer Protocol D. Active Directory

Remote Desktop Services

What computers are the highest authorities in the DOMAN Name System hieracrchy? A. Authoritative name servers B. Root servers C. Top-level domain servers D. Primary DNS server

Root servers

Manually modifying a routing table can cause messages to get stuck hopping between a limited number of routers. what is this problem called?

Routing Loop the end of reality itself

In question 14, suppose a new switch is connected to the first switch by way of network cable and three computers are connected to the new switch. Which topology is now used?

Star-bus Topology

What kind of route is created when a network administrator configures a router to use a specific path between nodes? A. Trace route B. Static route C. Default route D. Best path

Static routing

What device protects computer from a momentary increase in voltage due to lighting strikes, solar flares, or electrical problems. A. NAS B. Surge protector C. Generator D. Power converter

Surge protector

What process is used to establish a TCP connection?

TCP Three-Way Handshake

Which protocol's header would a Layer 4 device read and process. A. IP B. TCP C. ARP D. HTTP

TCP or UDP

Which client-server application allows an administrator to control a remote computer but does not encrypt or secure the communication between client and server? A. Telnet B. Remote Desktop C. FTP D. SSH

Telnet

Which part of a mac address is unique to each manufacturer? A. The network identifier B. The OUI C. The device identifier D. The physical address

The OUI I to enjoy French

What is the difference between dynamic ARP table entries and static ARP table entries?

Dynamic ARP is used when a ARP request can not be satisfied by data already in the ARP table Static ARP entries are manually entered using the ARP utility.

The second 64 of an autoconfigured IPV6 address may either be random or generated from the computer MAC address, which contains 48 bits. What standard defines the conversion of the MAC address to the IPv6 64-bit device id?

EUI-64

Give three examples of routers to determine the best of various available routing paths?

Hop count MTU (maximum transmission unit) Routing cost Theoretical badwidth Actual throughput Path latency/delay Cost Reliability Taco Tuesday

Which email protocol allows an email client to read mail stored on the mail server? A. IMAP4 B. SMTP C. TCP D. POP3

IMAP4

What is the primary protocol used at the Network layer?

IP (Internet Protocol)

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

IP address

If you are connected to a network that uses DHCP,and you need to terminate your windows workstation DHCP lease, which command would you use? A. ipconfig /release B. ipconfig /renew C. ifconfig /release D. ifconfig /new

IP config /release

What is the first point of interconnection between an organization's LAN or WAN and a service provider's facility, and what components are generally included at this location?

MDF (Main distribution frame), which may contain the demarc and other networking devices such as switches, routers, and fiber-optic cable.

Which type of DNS record identifies a mail server?

MX

Which OSI layer is responsible for directing data from one LAN to another? A. Transport layer B. Network layer C. Data Link layer D. Physical layer

Network layer / 3

A network consists of 10 computers, all running Windows 7 Professionals. One computer acts as a file server and serves up data to other computers on the network. Which networking model does the network use?

P2P (Peer-to-peer model)

What protocol does a network gateway use to keep track of which internal client is talking to which external Web server

PAT (Port Address Translation)

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

Physical address MAC address Hardware address Data Link layer address

You have decided to use SNAT and PAT on your small office network. At minimum, how many IP addresses must you obtain from your ISP for all five clients in your office to be able to access servers on the Internet?

1

What four functions do all routers perform?

1. Connect dissimilar network 2. Interpret Layer 3 and Layer 4 addressing. (etc) 3. Determine the best path for data to follow 4. Reroute traffic if the path of the first choice is down.

On what port is an IPv6 client listening for DHCP messages?

546

What are the fundamental distinctions between a layer 2 switch and router?

A Layer 2 switch operates only on its local network. A router belongs to two or more networks.

What is a PDU called at the Link layer?

A frame

What is a wiring schematic?

A graphical representation of a network's wired infrastructure.

What are the fundamental distinctions between a node and a host?

A host is a computer/device which hosts a resource on the network A node is any computer/device that can be addressed on the network

At the Network layer, what is a message called?

A packet

Suppose you send data to 11111111 11111111 11111111 11111111 IP address on an IVP4 network. To which device are you transmitting? A. All devices on the Internet B. All devices on your local network C. The one device with this given IP address D. Because no device can have this given IP address, no devices receive the transmission

All devices on your local network

List three types of services a network might support that are considered part of unified communications or convergence? A. File transfers, print services, and conversational voice B. User authentication, streaming live audio and video, and print services C. Web services, email services, and file services D. Conversational voice, streaming live audio and voice, and streaming stored audio and voice

Conversational voice, streaming live audio and voice, and streaming stored audio and voice

What are the fundamental distinctions between a MAN and WAN?

Coverage area. A MAN covers a smaller area (such as a campus), while a WAN covers a large area.

What type of device does a computer turn to first when attempting to make contact with a host on another network? A. Default gateway B. DNS server C. Root server D. DHCP server

Default gateway

Which type of Ethernet frames do today's networks use? A. Jumbo frame B. Ethernet II frame C. 802.3 frame D. CSMA/CD frame

Ethernet II frame

When your computer first joins an IVP6 network, what is the prefix of the IP address the computer first configures itself? A. FE80::/10 B. FF00::/8 C. 2001::/64 D. 2001::/3

FE80::/10

When a router can't determine a path to a message's destination, where does it send the message? A. Default gateway B. Default route C. Gateway of last resort D. Routing table

Gateway of last resort

List three signaling protocols discussed in the chapter that are used for communicating multimedia data.

H.323, MGCP, SIP

In the client-server model, what is the primary protocol used for communication between a browser and Web server? A. FTP B. TCP C. HTTP D. SSL

HTTP

Which two protocols are essential to IPv4 networks, but whose functions are performed by ICMPv6 on IPv6 networks?

IGMP (Internet Group Management Protocol) ARP (Address Resolution Protocol)

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 net- work adapter work?

Physical layer/1 Data Link layer/2 and Physical layer/1

What are some elements that are typically included in network diagrams?

Physical topology Logical topology Access method Network devices and connections Perimeter

When messages to a remote Web server are being lost for no apparent reason and you suspect the problem might be a path MTU black hole, which TCP/IP utility can you use to diagnose the problem? A. netstat B. traceroute C. nbtstat D. ping

Ping

Which type of address is used at the Transport layer to identify the receiving application?

Port number

Which statement describes SMTP? A. SMTP is a connectionless protocol that uses UDP B. SMTP is a connection-based protocol that uses UDP C. SMTP is a connectionless protocol that uses TCP D. SMTP is a connection-based protocol that uses TCP

SMTP is a connection based protocol that uses TCP

Which two-encryption protocols might be used to provide secure transmissions for browser and Web server communication? A. HTTP and HTTPS B. SSL and TLS C. SSL and HTTP D. TCP and UDP

SSL and TLS

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

Segment Datagram Transport layer / 4 Landshark: Candygram

What are the two general categories of UPSs?

Standy by Online

A network consists of seven computers and a network printer all connected directly to one switch. Which network topology does the network use?

Star topology

You are the network manager for a computer training center that allows clients to bring their own laptops to class for learning and taking notes. Clients need access to the Internet, so you have configured your network's DHCP server to issue IP addresses automatically. What DHCP option should you modify to make sure you are not wast- ing addresses that were used by clients who have left for the day?

The lease duration for the client computer

You have just brought online a new secondary DNS server and notice your monitoring software report a significant increase in network traffic. WHich two hosts on your network are likely to be causing the increased traffic and why? A. The caching and primary DNS servers, because the caching server is requesting zone transfers from the primary server B. The secondary and primary DNS servers, because the secondary server is requesting zone transfers from the primary server C. The root and primary DNS servers, because the primary server is requesting zone transfers from the root server. D. The Web server and primary DNS server, because the Web server is requesting zone transfers from the primary DNS server

The secondary and primary DNS servers, because the secondary server is requesting zone transfers from the primary server.

Apache is a popular example of what type of network software? A. Web server B. Browser C. Email server D. Email client

Web Server

What is the GUI version of Nmap for Windows?

Zenmap

You have just set up a new wireless network in your house, and you want to determine whether your Linux laptop has connected to it and obtained a valid IP address. What command will give you the information you need?

ifconfig -a

While troubleshooting a network connection problem for a coworker, you discover the computer is querying a nonexistent DNS server. What command-line utility can you use to assign the correct DNS server IP address?

nslookup

If you know that your colleague's TCP/IP host name is JSMITH, and you need to find out his IP address, what command should you type at your shell prompt or command prompt?

nslookup jsmith, or ping jsmith

While troubleshooting a network connection problem for a coworker, you discover that the computer has a static IP address and is giving a duplicate IP address error. What command-line utility can you use to find out what other device may already be using that IP address?

ping nslookup

What are the three methods by which a NIC can interface with a computer's motherboard?

1. Integrated into the motherboard 2. Installed in an expansion slot on the motherboard. 3. Installed as a peripheral device

What are the primary standard widths for rack systems? A. 3 feet and 6 feet B. 18U and 42U C. 19 inches and 23 inches D. 1U and 4U

19 inches and 23 inches

What decimal number corresponds to the binary number 11111111? A. 255 B. 256 C. 127 D. 11111111

255

Which routing protocol does an exterior router use to collect data to build its routing tables? A. RIPv2 B. BGP C. OSPF D. IS-IS

BGP (Border gateway protocol)

Why is it important to use plenum-rated cabling in the area above the ceiling tile?

Because it's flame-resistant and produces less smoke. Plus it tastes delicious.

What field in a TCP segment is used to determine if an arriving data unit exactly matches the data unit sent by the source? A. Source port B. Acknowledgment number C. Data D. Checksum

Checksum

A network consists of 10 computers running Windows 7, suppose one computer is upgraded to Windows Server 2012 R2. Which networking model can the network now support that it could not support without the upgrade?

Client-server

What three characteristics distinguish TCP from UDP.

Connection-oriented Uses sequencing and checksums Provides flow control

Why is it important to use a structured cabling standard when installing and managing cabling systems?

To maximize performance and minimize upkeep.

Why is it important to wear an ESD strap when installing a server in a rack?

To protect the server against static electricity, ESD (electrostatic discharge), and separation anxiety.

Is TCP or UDP normally used when streaming live video? Why?

UDP, because faster transmissions are more important than guaranteed delivery (for live streaming)