Network+
Which of the answers listed below refer(s) to the characteristic features of the 10GBASE-T Ethernet standard? (Select all that apply)
10 Gbps transfer rate over a maximum cable segment length of 55 meters (Cat 6 UTP cable), 10 Gbps transfer rate over a maximum cable segment length of 100 meters (Cat 6 STP cable), Twisted-pair copper cabling, 10 Gbps transfer rate over a maximum cable segment length of 100 meters (Cat 6a UTP/STP cable), Uses all four pairs of wires in a cable for data transmission
Which of the answers listed below refer(s) to the characteristic feature(s) of Category 5 (Cat 5) cabling? (Select all that apply)
100 Mbps transfer rate over 2 cable pairs (100BASE-T networks), 1 Gbps transfer rate over all 4 cable pairs (1000BASE-T networks) 100-meter cable segment length Twisted-pair copper cabling RJ45 connector
What is the typical cable segment length for a copper twisted-pair Ethernet cable?
100 meter
Which of the following answers describe(s) the characteristics of Category 5e (Cat 5e) cabling? (Select all that apply)
100-meter cable segment length, Twisted-pair copper cabling, RJ45 connector, 1 Gbps transfer rate over all 4 cable pairs (1000BASE-T networks)
Compared to SFP, SFP+ offers enhanced data transfer rates of up to:
16 Gbps
Which of the following answers refers to the maximum data transfer rate of QSFP?
4 Gbps
QSFP+ offers data transfer rates of up to:
40 Gbps
What is the most common type of a DSL Internet access?
ADSL
Which of the following answers refer to the characteristics of Category 8 (Cat 8) cabling? (Select 3 answers)
Appropriate for connecting datacenter equipment, Designed for short-distance (approx. 30 meters), high-speed links, 40GBASE-T
In the OSI model, the physical layer PDU is known as:
Bit
A type of network that interconnects multiple LANs within a limited geographical area is known as:
CAN
The use of cable modems for Internet access within a standard cable television infrastructure is commonly referred to as:
Cable broadband
Which of the following answers refers to a recommended minimum requirement for twisted-pair copper cabling in 1000BASE-T networks?
Cat 5e
Which of the following answers refer to the RG-6 cabling specification? (Select 3 answers)
Coaxial cabling, Suitable for long-distance cable runs, Used for cable television, satellite television, and cable modems
What are the characteristics of the RG-59 cabling specification? (Select 3 answers)
Coaxial cabling, Suitable for short-distance cable runs, Used for analog video and CCTV installations
Which of the following terms refer to the characteristic features of DSL? (Select 3 answers)
Copper cabling, Telephone lines, Last mile solutions
Shielded Twisted-Pair (STP) cabling reduces what kind of interference? (Select 2 answers)
Crosstalk, EMI
Layer 2 of the OSI model is also referred to as:
Data Link Layer
In the OSI model, the layer 4 UDP PDU is called:
Datagram
Which of the following answers can be used to describe leased-line connections? (Select 3 answers)
Dedicated, point-to-point, always-on connections, Typically used by businesses and organizations, WAN links
A type of coaxial connector commonly used for cable television and cable modems is called:
F-type
In the context of the OSI model, the term "Data encapsulation" is used to describe a process where each layer of the OSI model adds its own control information to the original data that is being passed across the layers from the physical layer up to the application layer.
False
Transmission Control Protocol (TCP) is an example of a connectionless protocol. Because TCP does not support three-way handshake while establishing a network connection, it is referred to as unreliable or best-effort protocol. Example applications of TCP include transmission of video and audio streaming data.
False
User Datagram Protocol (UDP) is a connection-oriented protocol using a three-way handshake which is a set of initial steps required for establishing network connection. UDP supports retransmission of lost packets, flow control (managing the amount of data that is being sent), and sequencing (rearranging packets that arrived out of order). Example applications of UDP include transmission of text and image data.
False
In the OSI model, the layer 2 PDU is called:
Frame
Which of the following protocols reside(s) at the application layer of the OSI model? (Select all that apply)
HTTP, FTP, SMTP
What are the characteristic features of satellite Internet connections? (Select 3 answers)
High signal latency, Interference (weather dependent), Relatively high cost in comparison to terrestrial links
Which of the following reside at the physical layer of the OSI model? (Select 3 answers)
Hub, Network Cabling, Repeater.
A network topology where each node connects to a central switching device is known as: (Select 2 answers)
Hub-and-spoke, Star
In virtualization technology, a computer software, firmware, or hardware that creates and runs virtual machines is called:
Hypervisor
What is the name of a network layer protocol that specifies the format of packets and addressing scheme in network communications?
IP
Which of the following answers refers to a proprietary European alternative to 110 block?
Krone
A type of network connecting computers within a small geographical area such as a building or group of buildings is called:
LAN
Which of the following answers refer(s) to (an) example(s) of (a) fiber-optic connector(s)? (Select all that apply)
LC ST SC MT-RJ
Physical layer of the OSI model is also known as:
Layer 1
Which of the following terms refers to the OSI network layer?
Layer 3
Which of the following answers does not refer to the OSI TCP segment header?
Layer 3 header
Which of the following answers does not refer to the OSI UDP datagram header?
Layer 3 header
The term "Presentation layer" refers to:
Layer 6 of the OSI model
The application layer of the OSI model is also known as:
Layer 7
Which of the following statements apply to Peer-to-Peer (P2P) networking? (Select 3 answers)
Less stable and secure than client-server networking model, Decentralized network type, In P2P networks, each node can at the same time serve and request resources
Which of the following answers does not refer to the characteristics of twinaxial cabling?
Long-distance cable runs
What are the characteristic components of the OSI data link layer? (Select 3 answers)
MAC address, Network switch, Ethernet frame
A computer network connecting multiple LANs over an area of a city is referred to as:
MAN
A limit on the maximum amount of data that can be transmitted over a network without fragmentation is referred to as:
MTU
What are the characteristic features of the 1000BASE-T Ethernet standard? (Select 3 answers)
Maximum cable segment length of 100 meters, Twisted-pair copper cabling (Cat 5 or higher), Uses all four pairs of wires in a cable for data transmission
What are the characteristic features of the 100BASE-TX Ethernet standard? (Select 3 answers)
Maximum cable segment length of 100 meters, Transfer rate of 100 Mbps over two-pair Cat 5 or better cable, Twisted-pair copper cabling (Category 5 or higher)
A network link consisting of two dissimilar transmission medium types requires an intermediary device known as:
Media converter
A network topology in which each node has a direct physical connection to every other node is known as:
Mesh
Which type of network topology provides the highest level of redundancy?
Mesh
What are the features of GBIC? (Select all that apply)
Modular (hot swappable) interface, Converts optical signals to electrical signals, Converts electrical signals to optical signals, Data transfer of 1 Gbps
What are the characteristic traits of single-mode fiber optics? (Select 3 answers)
More expensive than multimode fiber optics, Transmission distances of up to 100 km, Uses laser as the source of light
Which of the following answers can be used to describe client-server architecture? (Select 3 answers)
More stable and secure than peer-to-peer architecture, Centralized network type, Less reliable than peer-to-peer architecture
Which of the following solutions replaces network hardware with virtual machines?
NFV
Which of the following answers can be used to describe the characteristics of ring topology? (Select 3 answers)
Network nodes are daisy-chained in a closed loop, Data is passed through each intermediate node until the receiver node is reached, Each network node connects to exactly two other nodes
A type of limited-range computer network used for data transmission among various types of personal devices is referred to as:
PAN
In the OSI model, the layer 3 PDU is known as:
Packet
A simple device consisting of multiple connector blocks and ports used for cable management is known as:
Patch panel
Which of the following answers refer(s) to mGRE? (Select all that apply)
Point-to-multipoint network links, Tunneling protocol, Enables delivery of various data packet types over the same network link, Used in Dynamic Multipoint VPN (DMVPN)
Data format translation, data compression, and data encryption/decryption take place at the:
Presentation Layer of the OSI model
Which of the following answers refer to the OSI network layer components? (Select 3 answers)
Router, IP address, Packet
A dedicated local network consisting of devices providing data access is called:
SAN
Which of the following answers refers to a solution that simplifies large network infrastructure management through the use of software?
SDWAN
Which of the following TCP flags are used for establishing a network connection via TCP three-way handshake? (Select 2 answers)
SYN, ACK
In the OSI model, the layer 4 TCP PDU is known as:
Segment
Which OSI layer assumes the responsibility for opening, closing, and maintaining connections between applications?
Session Layer
Layer 5 of the OSI model is also referred to as:
Session layer
Authentication and authorization take place at the:
Session layer of the OSI model
Which of the answers listed below refer(s) to the characteristic feature(s) of SFP? (Select all that apply)
Small form factor transceiver, Converts electrical signals to optical signals, Newer transceiver type that replaces GBIC, Modular (hot swappable) interface, Converts optical signals to electrical signals, Data transfer of 1 Gbps
A remote-line diagnostic device placed at the joining point between an ISP's line and customer's on-premises wiring is known as:
Smartjack
Which of the following answers refer to examples of network layer header data? (Select 2 answers)
Source IP address, Destination IP address
Which of the following answers refer to the OSI layer 2 header data? (Select 2 answers)
Source MAC address, Destination MAC address
Which of the following network topologies is most commonly used in contemporary Ethernet LANs?
Star topology
Which of the answers listed below refers to a data link layer device designed to forward frames between network segments?
Switch
Which of the following answers refer to the characteristic features of bus topology? (Select 3 answers)
The main network cable becomes a single point of failure, All network nodes connect to a single central cable (a.k.a. backbone or trunk).
Which of the following answers refers to a modular network device designed to provide a seamless link between different types of network interfaces?
Transceiver
What are the characteristic features of the 10BASE-T Ethernet standard? (Select 3 answers)
Transfer rate of 10 Mbps over two-pair Category 3 or better UTP cable, Maximum cable segment length of 100 meters, RJ45 connector
Which of the answers listed below refer to the characteristics of multimode fiber optics? (Select 3 answers)
Transmission distances of up to 2 km, Less expensive than single-mode fiber optics, Uses LED as the source of light
Layer 4 of the OSI model is also known as:
Transport layer
A physical point where an ISP's network ends and connects with the customer's on-premises wiring (which also defines where the ISP's responsibility for maintenance ends and the consumer's responsibility begins) is referred to as a demarcation point, or demarc.
True
A type of network topology that combines two or more differing standard network topologies is referred to as a hybrid network topology.
True
Category 7 is a twisted-pair cabling standard featuring improved specifications for canceling crosstalk and system noise. As in Cat 6a, Cat 7 cabling offers 10 Gbps data transfer rate over a cable segment length of 100 meters in 10GBASE-T networks. Category 7 standard introduces new connector types (the GG45 and TERA connector). Cat 7 cabling has not seen a widespread consumer market adoption yet, because all manufacturers of active equipment and network cards prefer Cat 6a standard which offers similar performance and takes advantage of the traditional RJ45 connector.
True
In 10GBASE-T networks, Category 6 (Cat 6) UTP cabling supports a 10 Gbps data transfer rate at a limited range of 33-55 meters, whereas Cat 6a (augmented) cabling allows for 10 Gbps data transfer rate over a cable segment length of 100 meters.
True
In the OSI model, the payload data (a.k.a. user data) is the actual data that is being nested between header and tail control information.
True
The 66 block (older type / primarily used in analog telephone systems) and the 110 block (newer type / used in computer networks) are examples of punchdown blocks used for connecting sets of wires.
True
The Internet is an example of a large public WAN.
True
The general feature of all twisted-pair cabling types is that wires inside the cable are grouped into pairs and wires in each pair are twisted around each other to reduce signal interference from adjacent wire pairs (effect known as crosstalk).
True
The main difference between the UTP and STP cabling is that STP cable takes advantage of additional protective cover reducing signal interference from outside sources.
True
The shape and angle of the tip of a fiber-optic connector can have an impact on the performance of a fiber-optic communication link. The two basic types of fiber end are Ultra Physical Contact (UPC) and Angled Physical Contact (APC). In the UPC-type connector, the connector end is polished with no angle, while APC connectors feature a fiber end polished at an 8-degree angle, which results in better performance.
True
The term "Metro-optical" is a shorthand term for a Metropolitan Area Network (MAN) implemented with the use of fiber-optic connections.
True
vSwitch and vNIC are emulated hardware components that enable VM-to-VM connectivity as well as connections between VMs and physical networks.
True
Which of the answers listed below refer(s) to UTP cabling? (Select all that apply)
Twisted-pair copper cabling, Used in Ethernet networks and telephone systems, Low cost and ease of installation, Not surrounded by any shielding that would provide protection against interference from outside sources, In Ethernet networks, installed with RJ45 connector type
Which of the protocols listed below reside at the OSI transport layer? (Select 2 answers)
UDP, TCP
Which of the following answers refer(s) to the characteristic features of MPLS? (Select all that apply)
Used for connecting devices on a WAN, Unencrypted network traffic, Enables sending packets over a single, faster network path (routing decisions based on labels), Enables delivery of various data packet types over the same network link
What are the characteristic features of the RJ45 connector? (Select 2 answers)
Used with Ethernet network cabling, Twisted-pair copper cabling connector
Which of the answers listed below refer to the RJ11 connector? (Select 2 answers)
Used with telephone cabling, Twisted-pair copper cabling connector
Which of the following answers refer to the characteristic features of the 40GBASE-T Ethernet standard? (Select 3 answers)
Uses all four pairs of wires in a cable for data transmission, Twisted-pair copper cabling, 40 Gbps transfer rate over a maximum cable segment length of 30 meters (Cat 8 cabling),
A computer network connecting multiple smaller networks over very large geographical areas is known as:
WAN
A type of network consisting of computers and peripheral devices that use high-frequency radio waves to communicate with each other is called:
WLAN
In modern Ethernet networks, a twisted-pair copper cable terminated according to the TIA/EIA-568A standard on one end and TIA/EIA-568B standard on the opposite end forms a:
crossover cable (none of the above)
