Network+ Chapters 4, 6, 7
What is the range of decimal values in each octet of an IPv4 address?
0 to 255
What is the binary equivalent of the decimal value 97?
01100001
By convention, most network administrators give the LAN-side NIC on the default gateway the lowest host address in the network, usually the host ID of ____________________.
1
What is an example of a private IP address?
10.164.19.5
When referring to a NIC, technicians do not actually say, "multispeed, auto-sensing," but rather "____________________".
10/100/1000
When a multispeed, auto-sensing 100BaseT NIC connects to a 10BaseT Ethernet hub, at what speed will the NIC function?
100 Mbps sending and receiving
What is the maximum cable length on a segment of a 1000BaseT network?
100 meters
Of all the Gigabit Ethernet IEEE standards detailed in the chapter, which one maintains a signal over the greatest distance?
1000BaseLX
What version of Gigabit Ethernet is being positioned as the Ethernet backbone of the future? Correct!
1000BaseLX
____________________ is the long-distance carrier for Gigabit Ethernet.
1000BaseLX
The dominant Gigabit Ethernet standard is ____________________.
1000BaseT
Which version of Gigabit Ethernet is published under the 802.3ab standard?
1000BaseT
____________________ uses four-pair UTP or STP cabling to achieve gigabit performance.
1000BaseT
IEEE has approved two different versions of Gigabit Ethernet: 1000BaseT and ____________________.
1000BaseX
The __________ version of Gigabit Ethernet, published under the 802.3z standard, is divided into a series of standards, with names such as 1000BaseSX and 1000BaseLX.
1000BaseX
What is the binary equivalent of the decimal value 151?
10010111
The 100-megabit Ethernet standard that uses fiber-optic cable is called ____________________.
100BaseFX
Because the 100BaseT4 standard disappeared from the market and today has been forgotten, we simply use the term ____________________ when referring to 100BaseTX.
100BaseT
In 100BaseT, what is the maximum number of nodes per hub/switch?
1024
Which is the least expensive and most popular 10 GbE media type?
10GBaseLR
Which 10 GbE standard features a multimode fiber type?
10GBaseSR
What is the name of the IEEE standard for 10 GbE running on twisted pair cabling?
10GBaseT
Which wavelength is used on 10GBaseLW fiber-optic cabling?
1310
If you borrow 4 bits in a class C network, how many usable hosts will be on each subnet?
14
Which port is used to receive e-mail messages from e-mail servers (IMAP4)?
143
What wavelength is used on a 10GBaseEy network?
1550
What is the first usable host address on the network 192.168.5.32 /28?
192.168.5.33
What is an example of a public IP address?
198.192.100.3
A 100BaseFX network has a maximum distance of ____________________ kilometers between the hub and the node.
2
What is the decimal equivalent of the binary value 11010101?
213
What is an example of an IP address for an individual host expressed in dotted decimal notation?
215.233.32.91
What is the default subnet mask of a Class A network?
255.0.0.0
Which formula would you use to arrive at the number of hosts on a subnet?
2^h - 2, where h represents the number of host bits remaining.
Which formula would you use to calculate the number of new subnets?
2^n, where n is the number of bits you add to the subnet mask.
How many binary digits are in an IPv4 address?
32
How long is a subnet mask?
32 bits
To make IP addresses easier for humans to use, the 32-bit binary value is broken down into ____________________ groups of eight, separated by periods, or dots.
4
1000BaseSX cable has a maximum length range of 220 to ____________________ meters.
500
10GBaseT running on CAT 6 has a maximum cable length of only ____________________ meters.
55
Port numbers are values ranging from 1 to ____________________.
65535
How many subnets can you create if you borrow 3 bits in a class C network?
8
Which port do HTTP Web servers use
80
The version of GbE published under the IEEE ____________________ standard is known as 1000BaseX, and is divided into a series of standards, with names such as 1000BaseSX and 1000BaseLX.
802.3z
1000BaseSX cabling has a(n) ____________________ nm wavelength.
850
What wavelength is used on 10GBaseSW fiber-optic cabling?
850 nm
What wavelength is used on a 10GBaseSR network?
850 nm
All DHCP clients are designed to generate a(n) ____________________ address automatically if they do not receive a response to a DHCP Discover message. (Use the acronym.)
APIPA (Automatic Private IP Addressing)
The Regional Internet Registry (RIR) for North America is called the ____________________. (Use acronym.)
ARIN
____________________ is how a TCP/IP network figures out the MAC address based on the destination IP address. (Use acronym.)
Address Resolution Protocol (ARP)
____________________transceivers have only a single optical port designed inside to send on one wavelength, such as 1310 nm, and receive on a different wavelength, such as 1550 nm. (Use acronym.)
BiDi
Which method of sending a packet allows every computer on the LAN to hear the message?
Broadcast
The specification for 100BaseTX (100BaseT) calls for UTP cabling using __________ or better rated cabling.
CAT 5
If the first decimal value of an IP address is between 128 and 191, to what IP class does the network belong?
Class B
What class is the IP address 150.10.10.10?
Class B
Which statement best describes a Class E address ID?
Class E is considered to be experimental
Which task is performed by an ISP when it takes a block of addresses, subnets the block into multiple subnets, and then passes out the smaller individual subnets to customers?
Classless Inter-Domain Routing (CIDR)
Which tool automatically assigns an IP address whenever a computer connects to the network?
DHCP
DHCP stands for ____________________ _______________ __________________________ ______________________________.
Dynamic Host Configuration Protocol
What is the universal MAC address for broadcast?
FF-FF-FF-FF-FF-FF
A connection created using Angled Physical Contact (APC) connectors degrades from multiple insertions. (T/F?)
False
All NICs today run half-duplex. (T/F?)
False
Systems that use only static IP addressing can never have DHCP problems. (T/F?)
False
The Ethernet community would like to position 1000BaseSX as the Ethernet backbone of the future. (T/F?)
False
The Internet Protocol (IP) works at the Link layer. (T/F?)
False
The first binary octet of a Class C IP address always begins with 110 (110xxxxx). (T/F?)
False
The part of the IP address that is the same for all computers on a network is called the host ID. (T/F?)
False
Twisting the fiber is a popular action with fiber-optic cables. (T/F?)
False
User Datagram Protocol (UDP) is a connection-oriented protocol. (T/F?)
False
When a computer gives itself an Automatic Private IP Address (APIPA), it also includes a valid default gateway address. (T/F?)
False
When you want to be positive that the data moving between two systems gets there in good order, use a connectionless application. (T/F?)
False
Which term refers to the 100-Mbps standards, even though there are now newer versions of Ethernet available?
Fast Ethernet
What general type of cabling is a technician most likely to use today when installing Ethernet cabling in areas with high electrical interference?
Fiber-optic
Which protocol uses TCP as its transport layer protocol?
HTTP
The ____________________ was formed to distribute IP addresses through ISPs to those who need them. (Use acronym.)
IANA (Internet Assigned Numbers Authority)
For logical addressing to work, no two computers on the same network may have the same ______ ______________.
IP address
The network ID and the host ID are combined to make a host's ____ ________________.
IP address
To make a DHCP relay-capable device work, you must give the relay the IP address of the real DHCP server, also known as the ____ ________________ address.
IP helper
The world is moving to a newer, longer type of IP address called ____________________.
IPv6 (Internet Protocol version 6)
The "R" in the standard 10GBaseSR stands for which type of signaling?
LAN
In the United States, many fiber experts consider the ____________________ connector to be the predominant fiber connector. (Use acronym.)
LC
What is the most common connector used in a 1000BaseSX network?
LC
1000BaseSX uses an 850-nm (nanometer) wavelength ____________________ to transmit light on the fiber-optic cable.
LED
Which method of sending a packet allows a single computer to send a packet to a group of interested computers?
Multicast
What type of fiber-optic cabling and connectors does a 100BaseFX network use?
Multimode with ST or SC connectors
Manufacturers have accommodated the need for switches to connect to a variety of 10 GbE connector types by devising which solution?
Multisource agreements (MSAs)
To what layer of the OSI model does the TCP/IP model's Internet layer roughly correspond?
Network
The standard connector type today is called a(n) ____________________ connector because the two pieces of fiber touch when inserted. (Use acronym.)
PC
IANA has grown dramatically and now oversees five __________ that parcel out IP addresses to large ISPs and major corporations.
Regional Internet Registries (RIRs)
Which very high-speed fiber network was already in place and being used for wide area networking (WAN) transmissions, before the IEEE developed the 10 GbE Ethernet standards?
SONET
The "W" in the standard 10GBaseSW stands for which type of signaling?
SONET/WAN
What type of fiber-optic cable is used in a 1000BaseLX network?
Single-mode fiber
Which switch and network equipment modular transceivers have replaced gigabit interface converters (GBICs) as the modular connector of choice?
Small form-factor pluggable (SFP)
____________________ addressing means typing all of the IP information into each of your hosts.
Static
Which protocol is connection-oriented?
TCP
What is the de facto protocol suite of the Internet?
TCP/IP
What network protocol do Apple systems use today?
TCP/IP
1000BaseLX connectors look similar to1000BaseSX connectors. (T/F?)
True
1000BaseT connections and ports look exactly like the ones on a 10BaseT or 100BaseT network. (T/F?)
True
A very early protocol called Bootstrap Protocol (BOOTP) preceded DHCP in providing dynamic IP addressing. (T/F?)
True
All machines on the same network have the same subnet mask. (T/F?)
True
All modern NICs are multi-speed and auto-sensing. (T/F?)
True
Domain Name System (DNS) uses the User Datagram Protocol (UDP). (T/F?)
True
Subnet masks are always 32 binary digits long (T/F?)
True
The Mechanical Transfer Registered Jack (MT-RJ) is a type of Small Form Factor (SFF) connector. (T/F?)
True
Transmission Control Protocol (TCP) chops up data into segments. (T/F?)
True
When a DHCP client boots up, it automatically sends out a special DHCP Discover message using the broadcast address. (T/F?)
True
When a technician installs a range of IP addresses to be handed out by a router or server, this is called a DHCP scope. (T/F?)
True
With full-duplex, a NIC can send and receive data at the same time. (T/F??
True
Which protocol do Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) use?
UDP
Which method of sending a packet allows one computer to send a message directly to another user?
Unicast
To show Windows' current ARP cache, open a command line and type ________ ______.
arp -a
The NIC and the attached switch determine full- or half-duplex during ____________________ process.
auto-negotiation
A 100BaseFX network uses a(n) ____________________ signal type.
baseband
A(n) ____________________ network means that only a single signal travels over the wires of the network at one time, occupying the lowest frequencies.
baseband
CompTIA and many technicians use the term ____________________ to describe the traditional class blocks.
classful
The router interface that connects the LAN to the router is known as the ________________ ___________________.
default gateway
The vast majority of network rollouts in offices use a base of 1000BaseT connections, or __________, as you'll hear them called.
drops
Having a server program running on a system that automatically passes out all the IP information to systems as they boot up on or connect to a network is called ____________________ addressing.
dynamic
A Class C network block uses the __________ octets to define only the network ID.
first three
1000BaseLX has a maximum length of ____________________ kilometers.
five
Early 100BaseT NICs, just like 10BaseT NICs, could send and receive data, but not at the same time—a feature called ____________________.
half-duplex
Linux can use the deprecated ifconfig command, but a better tool is ____________________.
ip a, dhclient
A DHCP ____________________ is set for a fixed amount of time, often one to eight days.
lease
The special address 127.0.0.1 is known as the ____________________ address.
loopback
No individual computer can have an IP address that ends with 0 because that is reserved for the ___________________.
network ID
Routers direct network traffic by looking for a match to the _______________ ____ of the destination device in their routing tables.
network ID
Most network folks represent subnet masks using special shorthand: a / character followed by a number equal to the number of ____________________ in the subnet mask.
ones
What command can you use to tell a device to send packets to itself?
ping 127.0.0.1
What command would you run from a Windows command line to test a computer's network stack?
ping 127.0.0.1
To organize individual LANs into a larger network, every TCP/IP LAN that wants to connect to another TCP/IP LAN must have a connection using a ________________.
router
Built into a router is a(n) ________________ __________________, the map that tell the router what interface is associated with each destination network.
routing table
When a technician installs a range (or pool) of IP addresses, this is called a DHCP ____________________.
scope
A(n) ____________ ________ (if viewed in binary) is nothing more than a string of ones (representing the network bits) followed by some number of zeroes (representing the host bits), always totaling exactly 32 bits, typed into every TCP/IP host.
subnet mask
The NIC and the attached __________ determine full- or half-duplex during the auto-negotiation process.
switch
The different colors of the laser signals feature different __________.
wavelengths