Midterm Practice
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?
