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CompTIA A+ 220-801: Network Cabling, IP Addressing, Ports and Protocols
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Terms in this set (57)
What is unshielded twisted pair cabling?
This is the cheapest and most common cable used in computer networking. It lacks extra shielding and isn't very resistant to electromagnetic interference.
What is shielded twisted pair cabling?
In this type of cabling, each twisted wire is wrapped separately in a shield of metallic foil, which guards against electromagnetic interference.
What is 10Base2?
This is a thin coaxial cable with a maximum distance of 185 meters.
What is 10Base5?
This is a thick coaxial cable with a maximum distance of 500 meters.
What is 10BASE-T?
This is an ethernet standard that is capable of providing a maximum throughput of 10 Mbps over twisted pair cabling. Cat 3 cable provides the reliability required to meet these specifications and is the most common cable type found in these networks.
What is 100BASE-TX?
This is an ethernet standard capable of providing a maximum of 100 Mbps of throughput.
What is 1000BASE-TX?
This is an ethernet standard capable of providing a maximum of 1,000 Mbps of throughput.
What is 10GBASE-T?
This is an ethernet standard capable of providingt a maximum of 10Gbps of throughput.
What is category 3 cabling?
This is a UTP cable comprised of four wire pairs. It can transfer data at up to 10 Mbps. It is typically used in telephone wiring, 10 Mbps Ethernet and 4 Mbps token ring networks. It is also called RJ-11 cable.
What is category 4 cabling?
This is a UTP cable comprised of four wire pairs. It can support throughput of up to 16 Mbps. It is typically used for token ring or Ethernet networks.
What is category 5 cabling?
This is a UTP cable comprised of four wire pairs. It can support throughput of up to 100 Mbps, although specifications exist for up to 1000 Mbps. They have a higher twist ratio than category 3 cables.
What is category 5e cabling?
This is a twisted pair cable comprised of four wire pairs. It can support throughput of up to 1 Gbps.
What is category 6 cabling?
This is a STP cable comprised of four wire pairs.
What is category 6e cabling?
This is a higher grade version of CAT 6 wiring that supports data throughput at multiple gigabits per second.
What is plenum cable?
This is cable that can be installed in ducts, plenums or other spaces used for environmental air. It is covered in fire-resistant cladding.
What is fiber optic cabling?
This composed of one or more flexible transparent plastic or glass fibers. Data is transmitted through the cable by a laser or LED. It can run at higher speeds across longer distances than copper cables. It is not affected by EMI and RFI, has very high throughput and maintains high security.
What does loss factor refer to?
This is the amount of degradation a light signal experiences before it reaches its destination.
What is connector loss?
Any section of fiber that has been joined with a connector can be expected to suffer a slight loss of signal.
What is attenuation?
This is a decrease in intensity, power, and amplitude of a sound wave as it propagates through a median.
What is microbending?
This occurs when a light source is distorted by a deformation in the fiver, such as a slight bend.
What is macrobending?
This occurs when light leaks through the fiber cladding. This occurs if the fiber cable is bent too much.
What are some types of fiber cables?
1. Single-mode fiber.
2. Multi-mode fiber.
What are some technologies that enhance fiber cables?
1. Wave division multiplexing.
2. Dense wave division multiplexing.
What are some fiber cable standards?
1. SONET - Synchronous Optical Network.
2. SDH - Synchronous Digital Hierarchy.
How does coaxial cable differ from twisted cabling?
Coaxial cable (RG-6) has a single conductor in its center, rather than multiple intertwined conductors. The conductor is protected by one or more shields, which makes coaxial cable highly resistant to EMI.
What is RG-59 cabling?
These are insulated with a copper foil sheath and are commonly used in VHF or UHF receiver applications. It suffers significant high-frequency loss rates, making it unsuitable for use over long distances.
What is RG-6 cabling?
This cable looks similar to RG-59 but has superior shielding qualities. It is used in various commercial and residential applications including television and professional video applications.
What is a fiber cable connector?
Subscriber connector (SC) is one of the most common connectors available for fiber cables.
What is MulHDBaseT?
This is a newer television and computer display device technology that provides 5Play convergence, allowing audio, video, power, web connectivity and control signals over a single cable.
What is High-Definition Multimedia Interface (HDMI)?
This uses a 19-pin connector to deliver uncompressed video and audio signals over a single cable to a display device.
What are the five types of HDMI connectors?
Type A: consists of 19 pins, designed for HDMI 1.0.
Type B: consists of 29 pins, designed for HDMI 1.0.
Type C: consists fo 19 pins in a mini form factor, designed for HDMI 1.3.
Type D: designed for HDMI 1.4.
Type E: small form factor, designed for HDMI 1.4.
What are F series connectors?
These were originally designed for cable television use. They are relatively cheap and are used at an impedance rate of 75 ohms in the 250 MHz to 1 GHz range.
What are BNC connectors?
These are common connectors for coaxial cable, and were originally created for military applications. They come in versions for both 50 and 75 ohm cable impedance and are used commonly in RF and video applications below 3 GHz.
What is an ST connector?
This is the straight tip connector and has a ceramic tip.
What are class A IPv4 addresses?
These use the first octet to denote the network and the remaining 24 bits contain the host information. Range: 0.0.0.0 to 127.255.255.255.
What are class B IPv4 addresses?
These use the first two octets to denote the network and the remaining 16 bits contain the host information. Range: 18.104.22.168 to 22.214.171.124.
What are class C IPv4 addresses?
These use the first three octets to denote the network and the remaining 8 bits contain the host information. Range: 192.0.0.0 to 126.96.36.199.
What are class D IPv4 addresses?
These are reserved for multicasting. Range: 188.8.131.52 to 184.108.40.206.
What are class E IPv4 addresses?
These are reserved for experimental use. Range: 240.0.0.0 to 255.255.255.255.
What are APIPA addresses?
These are intended for small and non-routable networks. As oon as a DHCP server is available, an APIPA address is replaced by an address assigned by that server. The APIPA address range is 169.254.01-169.254.255.254.
How are IPv6 addresses different from IPv4?
They use 128 bits instead of 32 and use hexadecimal notation. The addresses can omit leading zeros and can use double colons to indicate extended zeros. An example is: 2001:0db8:3c4d:0015:0000:0000:12a2f:1a2b
What is a gateway?
These convert data into a format that the receiving network can process. They must be able to work on multiple layers of the Open Systems Interconnection (OSI) model.
What are the five main types of gateways?
4. Voice and data.
What is the default subnet mask of a Class A network?
These have an octet of ones and three octets of zeroes, such as the default of 255.0.0.0.
What is the default subnet mask of a Class B network?
These have two octets of ones and two octets of zeroes, such as the default of 255.255.0.0
What is the default subnet mask of a Class C network?
These have three octets of ones and one octet of zeroes, such as the default of 255.255.255.0
What are three main methods to configure IP addresses on hosts?
What is DHCP?
This is the Dynamic Host Configuration Protocal, and it was developed to replace the Boostrap Protocol. DHCP enables each network to borrow or lease an IP address for a specified period of time.
How do clients and servers negotiate leases under DHCP?
What are some of the most common protocols used to assign ports on in the internet?
1. File Transfer Protocol (FTP, ports 20 and 21).
2. Telnet (port 23).
3. Simple Mail Transfer Protocol (SMTP, port 25).
4. Hypertext Transfer Protocol (HTTP, port 80).
5. Post Office Protocol version 3 (POP 3, port 110).
What are some other common protocols?
1. Internet Message Access Protocol (IMAP, port 143).
2. HTTP Secure (HTTPS, port 443).
3. Domain Name System (DNS, port 53).
4. Remote Desktop Protocol (RDP, TCP port 3389).
What are differences between TCP and UDP?
UDP is connectionless, and TCP requires a connection.
What is LDAP?
This is Lightweight Directory Access Protocol. This is an internet protocol that allows client applications to access information from a server.
What is SNMP?
This is Simple Network Management Protocol. It enables network administrators to monitor network control devices.
What is SMB?
This is Simple Message Block. It helps provide shared access to components on a network, allowing client computers to read and write to files that reside on a remote server.
What is SSH?
This is Secure Shell. It provides a secured method of logging in to a remote network system.
What is SFTP?
This is Secure File Transfer Protocol. This enables you to access and copy files between computers. It requires a secure connection, and also encrypts the data being accessed.
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