Net essentials Ch 1-5
Which three factors should be considered when choosing the appropriate network media? (choose three)
-the environment in which the media is installed -the amount of data and the data transfer rate desired -the distance between hosts that the media will correct
What are three characteristics of multicast transmission? (Choose three.)
1. A single packet can be sent to a group of hosts. 2. Multicast transmission can be used by routers to exchange routing information. 3. The range of 224.0.0.0 to 224.0.0.255 is reserved to reach multicast groups on a local network.
Which two criteria are used to help select a network medium for a network? (Choose two.)
1. the distance the selected medium can successfully carry a signal 2. the environment where the selected medium is to be installed
What are three characteristics of UTP cabling? (Choose three.)
1.susceptible to EMI and RFI 2.easiest type of networking cable to install 3.most commonly used networking cable
What are three private IPv4 address? (Choose three.)
10.1.1.1 1 72.16.4.4 1 92.168.5.5
Which three IP addresses are considered private addresses?
10.234.2.1 (10.0.0.0-10.255.255.255) 172.17.251.4 (172.16.0.0-172.31.255.255) 192.168.5.29 (192.168.0.0-192.168.255.255)
Transport layer ports 1 through_____ are used to identify well-known ports.
1023
How many binary bits exist within an IPv6 address?
128
When a computer assembles a frame to be sent over the network what is the maximum size of an Ethernet frame?
1518 bytes
Which network does a host with IP address 172.32.65.13 reside on if it is using a default subnet mask?
172.32.0.0
Which IP address is a unicast address if a default subnet mask is used?
192.16.42.67
What is the full uncompressed representation of the IPv6 address 2001:DB8:0:0:AA::200?
2001:0DB8:0000:0000:00AA:0000:0000:0200
What is the equivalent decimate value given a binary number 1100 1010?
202
Refer to the exhibit. What is an equivalent representation of the full IPv6 address?
2031:0:300::C0:8000:130B
How many usable hosts are available given a Class C IP address with the default subnet mask?
254
Which destination IPv4 address does a DHCPv4 client use to send the initial DHCP Discover packet when the client is looking for a DHCP server?
255.255.255.255
How much data can be encapsulated into a normal sized ethernet frame before it is sent over the network?
46 to 1500 (once the destination MAC address, source MAC address, and FCS is added it will be 64-1518)
Which type of technology is used to provide digital data transmissions over cell phone networks?
4G
A technician is setting up equipment on a network. Which three devices will need IP addresses? (Choose three.)
A Printer with an integrated NIC. A server with two NICs. An IP phone.
which statement defines a data communications protocol?
A set of rules that govern the communication process
What is an example of a binary value from everyday life?
A simple light switch
Match the components in the notation 100Base-T to the specification. (Not all options are used.)
Base = Baseband Transmission T = Twisted Pair Cable 100 = Speed in mbps
What are two differences between binary and decimal numbers? (Choose two.)
Binary numbers are based on powers of 2 and Decimal numbers include 0 through 9.
Which two types of interference may affect the data throughput on UTP?
Crosstalk and EMI
Which type of packet is sent by a DHCP server after receiving a DHCP Discover message?
DHCP Offer
A user type www.cisco.com into a web browser to visit the corporate website. Which service will resolve the domain name to an associated IP address?
DNS
Which protocol allows a user to type www.cisco.com instead of an IP address to access the web server?
DNS
Which network device is used to translate a domain name to the associated IP address?
DNS server
A ______ center is a facility used to house computer systems in an enterprise network.
Data
What address type does a switch use to make selective forwarding decisions?
Destination MAC
A client is sending a message to request information form a web server on the internet. Which parameter is used in the message to indicate the specific service requested?
Destination Port
A workstation gets its IP address automatically.
Domain Host Configuration
A user requests a website by typing in its name.
Domain Name System
A service that allows workers to send messages to each other over the Internet.
What type of server would use IMAP?
What makes it possible for e-mail to be sent and received on a wide variety of devices including cell phones, PDAs, laptops, and desktop computers?
Email Software is written using standards and protocols that ensure compatibility.
What is the primary motivation for development of IPv6?
Expand addressing capabilities
What is the destination MAC address of a broadcast Ethernet frame?
FF-FF-FF-FF-FF-FF
Which three protocols operate at the application layer of the TCP/IP model? (Choose three.)
FTP, POP3, DHCP
A user uploads new files to his or her website.
File Transfer
Which term is used to refer to a Layer 2 PDU?
Frame
What is a technology used in a cellular telephone network?
Global System for Mobile Communications (GSM)
Which two application layer protocols manage the exchange of messages between a client with a web browser and a remote webserver?
HTTP nd HTTPS
What is the purpose of the core layer in the Cisco hierarchical network design model?
High-speed Backbone Switching
Match the term to a function. Web Server
Hosts a Web Page
The __________ is an organization that develops and maintains Ethernet and Wireless standards.
IEEE
which three configuration components are required to allow a host to communicate with other hosts on remote networks?
IP address Default Gateway Subnet Mask
What type of information is contained in an ARP table?
IP address to MAC address mappings
Which communication tool allows multiple users to communicate with each other in real time by using a smartphone application or social media site?
Instant Messaging
What is the purpose of an IP address?
It identifies the source and destination of data packets on a network
Which statement describes a MAC address?
It is a physical assigned to an Ethernet NIC by manufacturer
The _________ address is a physical address assigned to every Ethernet network interface.
MAC
A wireless network was recently installed in a coffee shop and customer mobile devices are not receiving network configuration information. What should be done to correct the problem?
Make sure the DHCP server is functional.
Which three elements do all communication methods have in common? (Choose three.)
Message Destination, Message Source, Transmission Medium
What type of message is sent to a specific group of hosts?
Multicast
Which function does NAT perform in a wireless router?
NAT takes an internal source IP address and translates it to a global IP address.
Which wireless technology is used on smart phones to transmit data to another device within only very close proximity?
NFC (Near Field Communications)
The ______ model breaks network communications down into seven functional layers.
OSI
Which two protocols are used in the process of sending and receiving emails? (Choose two.)
POP and SMTP
Which two layers of the OSI model specify protocols that are associated with Ethernet standards? (Choose two.)
Physical Layer and Data Link Layer
What is used by TCP and UDP to track multiple individual conversations between clients and servers?
Port Numbers
A user opens multiple windows on the desktop with several task including web surfing, emailing, and skype calling. what is used by the TCP/IP protocol stack to track the specific sessions for each application?
Port number
Match the term to a function. HTTP
Protocol commonly used by a web browser
Which type of network model describes the functions that must be completed at a particular layer but does not specify exactly how each protocol should work?
Reference Model
Match the term to a function. Web Client
Requests a Web Page
A network technician accesses a network device securely from a remote site
SSH
Which two applications provide virtual terminal access to remote servers? (Choose two.)
SSH and Telnet
What is the advantage of using SSH over Telnet?
SSH provides secure communications to access hosts.
Which type of network cable contains multiple copper wires and uses extra shielding to prevent interference?
STP
What role does a router play on a network?
Selecting the path to destination networks
Which three layers of the OSI model make up the application layer of the TCP/IP model? (Choose three.)
Session, Presentation, Application
Which term refers to the set of rules that define how a network operates?
Standard
What are two wiring schemes defined by the TIA/EIA organization for Ethernet installation in homes and businesses? (Choose two.)
T568A T568B
Refer to the exhibit. A technician has configured a user workstation with the information shown. Although the user can access all local LAN resources the user cannot access any Internet sites by using either domain names or IP addresses. What is causing this failure?
The default Gateway address is incorrect
When IPv4 is configured for a computer on a network what does the subnet mask identify?
The part of the IP address that identifies the network.
What action does a DNS server take if it does not have an entry for a requested URL?
The server checks with another DNS server to see if it has an entry.
Which statement describes the ping and tracert commands?
Tracert shows each hop, while ping shows a destination reply only.
At what layer of the OSI model are port numbers addressed?
Transport
At which layer of the TCP/IP model does TCP operate?
Transport
What is a "best effort" protocol well suited for streaming audio and VoIP?
UDP
Which Transport layer protocol provides best effort delivery without guaranteeing that packets arrive at the destination?
UDP
Which IP address type is intended for a specific host?
Unicast
A user types in a URL and a page loads in the client browser.
Web Service
Match the term to the value represented: bit
a one or zero
which scenario describes a peer-to-peer network?
a user has shared a printer attached to the workstation
What is the difference between the terms bandwidth and throughput?
bandwidth is the capacity of data transfer in a network and throughput is the actual data transfer rate
What terms represent the maximum and actual speed that can be utilized by a device to transfer data?
bandwidth; throughput
Which wireless technology can be used to connect wireless headphones to a computer?
bluetooth
When a user is visiting an e-learning website to learn about networking, the user computer is acting as a __________?
client
Which type of network cable is used to connect the components that make up satellite communication systems?
coaxial
Which type of Ethernet cable should be used to directly connect two devices that both use the same pins for transmitting and receiving data?
crossover twisted-pair cable
Which term describes the interference when electrical impulses from one cable cross over to an adjacent cable?
crosstalk
Information in its raw or unorganized form that represents something is known as __________
data
Which IP configuration parameter provides the IP address of a network device that a computer would use to access the Internet?
default gateway
What is an advantage of the peer-to-peer network model?
ease of setup
Match the term to the value represented: byte
eight bits
Which type of network cable is commonly used in backbone networks and telephone companies?
fiber-optic cable
Which type of network component is used to interconnect computing devices?
intermediate devices
when a host sends a packet, how does it determine if the destination of the packet is on the same local network or on a remote network?
it uses the subnet mask to compare the source and destination IP address
Which two devices are considered end devices? (Choose two.)
laptop, printer
What is the delay in the amount of time for data to travel between two points on a network?
latency
In fiber-optic media, the signals are represented as patterns of __________
lights
What are two sources of electromagnetic interference that can affect data transmissions? (Choose two.)
microwave oven fluorescent light fixture
What is the internet?
network of networks
What type of network is defined by two computers that can both send and receive requests for resources?
peer-to-peer
When a network is installed in a high school, it is important for a network admin to create a ___________ topology diagram to document where each host is located and how they are connected to the network.
physical
Which two devices are shares peripherals?
printer and scanner
Match the term to a function. HTTPS
secure protocol that uses port 443
A ________ is a host that runs software to provide information such as web content, to other hosts.
server
Which term is used to describe a network device with the primary function of providing information to other devices?
server
A client is sending a message to request information from a web server on the internet. Which parameter is used in the message to indicate the specific service requested?
server domain name
What information does an ethernet switch examine and use to build its address table?
source MAC address of an incoming frame
Which three devices are considered intermediate devices in a network?
switch, wireless access point, and router
Which criterion can be used to select the appropriate type of network media for a network?
the environment where the selected medium is to be installed
Which factor classifies a host as a server?
the software installed
Match the term to a function. HTML
used to create web pages
Which items are collectively referred to as network media?
wires and radio waves
Match the term to the value represented: kilobyte
~ 1 thousand bytes
Match the term to the value represented: gigabyte
~1 billion bytes
Match the term to the value represented: megabyte
~1 million bytes
Match the term to the value represented: terabyte
~1 trillion bytes
