Midterm Practice

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

AAAA record

In a DNS zone, what type of record holds the name-to-address mapping for IPv6 addresses?

sliding-window

In a TCP segment, what field indicates how many bytes the sender can issue to a receiver before acknowledgment is received?

False

Servers that have a NOS installed require less memory, processing power, and storage capacity than clients because servers are called on to handle only light processing loads and requests from multiple clients. True or False

1300 nanometers

The 1000Base-LX utilizes light with what wavelength?

False

The 1024 - 65535 range of ports is also known as the "well-known" range. True or False?

wiki

What type of documentation tool is a website that can be edited by users, allowing them to add files and photos and links between pages?

punchdown tool

What type of tool would you utilize to terminate twisted pair wire on a 66 or 110 block?

mtr

What utility is the equivalent to the pathping command on a Linux system?

ping

What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network?

SIP

Which of the following protocols is used as a signaling protocol for the initial connection between hosts, but does not participate in data transfer during the session?

Light experiences virtually no resistance when traveling through glass.

Which of the following statements about fiber-optic cabling is accurate?

False

Cable that is coated with flame-resistant polyvinyl chloride (PVC) is acceptable for use in plenum areas. True or False?

False

DNS follows a centralized database model, allowing for easier management of DNS records. True or False?

True

Fiber-optic cable comes in two types: single-mode fiber (SMF) or multimode fiber (MMF). True or False

Layer 7

HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the OSI model?

Z-Wave

Healing messages are a feature of what smart home protocol?

False

ICANN is responsible for restrictions on use of the .com, .org, and .net TLDs. True or False?

True

IP is an unreliable, connectionless protocol, as it does not establish a session to send its packets. True or False?

False

IPv4 and IPv6 use the same packet format. True or False?

False

The pathping utility sends 10 pings per hop by default. True or False?

True

The process of designing, implementing, and maintaining an entire network is called the system life cycle. True or False?

False

The protocol data unit for the Physical layer of the OSI model is payload, or data. True or False

True

The term firmware refers to programs embedded into hardware devices. This software only changes when a firmware upgrade is performed. True or False?

wiring schematic

What type of diagram is a graphical representation of a network's wired infrastructure?

flow label

In IPv6, what field is used to indicate what sequence of packets from one source to one or multiple destinations a packet belongs to?

star topology

If your network consists of all connected devices connecting to one central device, such as a switch, what type of topology is being used?

False

A 66 block is more suitable for data connections than the older 110 block. True or False?

project manager

A change coordinator functions as what type of manager?

VoIP PBX (private branch exchange)

A dedicated telephone switch or virtual switching device that connects and manages calls within a private organization, and manages call connections that exit the network through a VoIP gateway, is known by what term?

True

A hexadecimal number is a number written in the base 16 number system. True or False?

The cable must be a rollover cable.

A junior administrator is having issues connecting to a router's console port using a TIA/EIA 568B standard cable and a USB serial to RJ-45 adapter, despite verifying terminal settings. What is the issue?

fail-open

A policy in which all exit doors for a building stay unlocked during a fire is an example of what type of policy?

False

A short circuit is one where needed connections are missing, such as when a wire breaks. True or False

True

A time domain reflectometer sends a signal and analyzes the return signal's change in amplitude to determine where cable imperfections may exist. True or False?

a fiber cleaver

A typical fiber termination kit should include what tool for cutting a clean slice through fiber strands?

True

A wavelength mismatch occurs when transmissions are optimized for one type of cable but sent over a different type of cable. True or False?

True

After a problem and its symptoms have been identified, a theory regarding a probable cause should be established. True or False?

40km

Both 10GBase-ER and 10GBase-EW have what maximum distance limitation on a segment of single mode fiber?

port numbers

At the Transport layer of the OSI, what is used to find and communicate with a particular application running on a host?

Network

At what layer of the OSI model do the IP, ICMP, and ARP protocols operate?

Layer 2

At what layer of the OSI model does a network switch normally operate?

True

Each organization that provides host services on the public Internet is responsible for providing and maintaining DNS authoritative servers for public access. True or False?

True

Each type of cable has a prescribed bend radius, which is the radius of the maximum arc into which you can loop a cable without impairing data transmission. True or False?

TCP 3389

Encrypted control of remote computers using the RDP protocol is accomplished using what port number?

19 inches

Equipment data racks most commonly are a standard width of what measurement?

False

F5 Networks set the standard for the diagram symbols used to represent routers, switches, firewalls, and other devices. True or False?

fire suppression agent

In a fire suppression system, what term is used to describe what is typically a foaming chemical, gas, or water that is sprayed everywhere to put out a fire?

True

In general, a Layer 3 or Layer 4 switch is still optimized for fast Layer 2 data handling. True or False?

at least 3 feet

In order to ensure that a cable is not affected by electromagnetic interference, how far away should the cable be from fluorescent lighting?

On the DNS root servers

In the DNS hierarchy, where is information about how to find the top-level domain servers held?

The President

In the United States, who is able to activate the Emergency Alert System at the national level?

128.0.x.y to 191.255.x.y

In the classful addressing scheme, what range of network addresses is considered a Class B?

True

Multimode fiber contains a core that is larger than a single mode fiber core. True or False?

An IS-IS capable network router

Originally codified by ISO, what does the "intermediate system" in IS-IS (Intermediate System to Intermediate System) stand for?

link-state protocols

Routing protocols that enable routers to communicate beyond neighboring routers, allowing each router to independently map the network, are known as which type of protocols?

simplex

Signals that can travel in only one direction on a medium are referred to as what type of signal?

False

Static electricity is an electrical charge in motion. True or False?

False

The CTRL + S key combination can be used to stop an actively running command. True or False?

frame

The Data Link Layer utilizes what name for its protocol data unit (PDU)?

False

The Data Link layer attaches a trailer to the end of a packet, and does not include a header. True or False?

False

The FTP protocol utilizes UDP, while TFTP uses TCP for data transmission. True or False?

TCP

The IP connectionless protocol relies on what other protocol to guarantee delivery of data?

True

The TIA/EIA standard for wall jacks in a work area require that at least one outlet be provided for data and one for voice. True or False?

False

The Transmission Control Protocol (TCP) is considered to be a connectionless, or best-effort delivery protocol. True or False?

Remote Desktop Protocol (RDP)

The Windows Remote Desktop application utilizes what protocol to provide secure, encrypted transmissions?

True

The cost of upgrading infrastructure has been a major factor in the slow adoption of IPv6. True or False?

MAC (Media Access Control) address

The frame header at the Data Link layer includes hardware addresses of the source and destination NICs. What is another name for this address?

True

The industry standard height for a rack in rack units is 42U. True or False

False

UDP provides error checking, but not sequencing. True or False?

Zenmap

What is the name of the GUI front end that is available for the Nmap utility?

statistical time division multiplexing

Utilizing time slots that are adjusted according to priority and need is an example of what type of multiplexing on copper lines?

SNMP

What Application layer protocol can be used to monitor and gather information about network traffic and can alert network administrators about adverse conditions that need attention?

netstat -n

What command will list only current connections, including IP addresses and port numbers?

vertical cross connect

What component of the backbone runs between a building's floors and can be used to connect an MDF and IDF or multiple IDFs?

RG-6 coaxial

What is NOT a TIA/EIA recognized cabling type that can be used for horizontal cabling?

Devices are daisy-chained together in a single line.

What is a defining characteristic of a bus topology based network?

IP address

What is assigned to each node on a network, which is then used by the Network layer to uniquely identify the node?

8 degrees

What is the industry standard angle for an Angle Polished Connector (APC)?

SMTP

What mail protocol is used to send mail messages to a server?

coarse wavelength division multiplexing

What multiplexing technology lowers cost by spacing frequency bands wider apart to allow for cheaper transceiver equipment?

The last 24 bits of the MAC address

What part of a MAC address serves as the extension identifier, or device ID?

latency

What routing metric affects a path's potential performance due to delay?

TIA/EIA-568

What standard describes uniform, enterprise-wide cabling systems, regardless of who manufactures or sells the various parts used in the system?

Jitter is what happens when packets experience varying amounts of delay and arrive out of order.

What statement correctly describes "jitter"?

A customer modem is continuously losing signal due to large distance from the transmitting device.

What statement describes a transmission flaw that is occurring due to attenuation?

Power over Ethernet requires CAT6 or better copper cable.

What statement regarding the Power Over Ethernet standards is inaccurate?

vim

What text editor can be used on Linux to view and edit the contents of a configuration file?

True

When using IPv6, two or more nodes on the same link are said to be neighbors.

15

When using the Routing Information Protocol (RIP), what is the maximum number of hops a message can take between its source and its destination before the destination is considered unreachable?

white/orange, orange, white/green, blue, white/blue, green, white/brown, brown

When viewing the pinout for T568B, what is the correct order of wire colors, starting at pin 1?

netstat -s

Which command will produce statistics about each message transmitted by a host, separated according to protocol type?

127.0.0.1

Which of the following IP addresses would be a loopback IP address?

A router forwards broadcasts over the network.

Which of the following is not a task handled by a router?

SFP+ is the same size as SFP, and supports a theoretical maximum transmission speed of 16 Gbps.

Which of the following statements correctly describes the SFP+ transceiver?

EIGRP

Which routing protocol started as a Cisco proprietary protocol and combines some of the features of a link-state protocol with that of distance-vector protocols?

The exposure of the cable can cause transmission interference between wires.

Why should you not leave more than 1 inch of exposed cable before a twisted-pair termination?

A mismatched connector will have different impedance ratings, causing data errors.

Why should you terminate coaxial cable with connectors that are rated for the exact cable type?

show ip route

You are connected to your network's Cisco router, and need to verify the route table. What command should you enter?

TIA/EIA 568A

You have been awarded a contract for wiring a new federal building. What twisted-pair wiring standard must you use?

Master license agreement

Your company is setting itself up to distribute software made by another company. What type of document should your company procure from the developing company?


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