mod 1
What characteristic describes spyware?
a. software that is installed on a user device and collects information about the user
b. an attack that slows or crashes a device or network service
c. the use of stolen credentials to access private data
what is
a. software that is installed on a user device and collects information about the user
1.8 Network Security
What is a user trying to determine when issuing a ping 10.1.1.1 command on a PC?
a. if the TCP/IP stack is functioning on the PC without putting traffic on the wire
b. if there is connectivity with the destination device
c. the path that traffic will take to reach the destination
what is
b. if there is connectivity with the destination device
2.8 verify connectivity
Which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model? (Choose three.)
a. application
b. presentation
c. session
d. transport
what is
a. application
b. presentation
c. session
The TCP/IP model consists of four layers: application, transport, internet, and network access. The OSI model consists of seven layers: application, presentation, session, transport, network, data link, and physical. The top three layers of the OSI model: application, presentation, and session map to the application layer of the TCP/IP model.
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3.5 Reference Models
What OSI physical layer term describes the measure of the transfer of bits across a medium over a given period of time?
a. throughput
b. bandwidth
c. latency
what is
a. throughput
4.2 Physical Layer Characteristics
Which two acronyms represent the data link sublayers that Ethernet relies upon to operate? (Choose two.)
a. CSMA
b. FCS
c. LLC
d. MAC
what is
c. LLC
d. MAC
For Layer 2 functions, Ethernet relies on logical link control (LLC) and MAC sublayers to operate at the data link layer. FCS (Frame Check Sequence) and SFD (Start Frame Delimiter) are fields of the Ethernet frame. CSMA (Carrier Sense Multiple Access) is the technology Ethernet uses to manage shared media access.
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ITN
6.1 Purpose of the Data Link Layer
Which statement describes network security?
a. It ensures sensitive corporate data is available for authorized users.
b. It prioritizes data flows in order to give priority to delay-sensitive traffic.
c. It supports growth over time in accordance with approved network design procedures.
what is
a. It ensures sensitive corporate data is available for authorized users.
1.1.6 reliable networks
What is a characteristic of a switch virtual interface (SVI)?
a. Although it is a virtual interface, it needs to have physical hardware on the device associated with it.
b. An SVI is created in software and requires a configured IP address and a subnet mask in order to provide remote access to the switch.
what is
b. An SVI is created in software and requires a configured IP address and a subnet mask in order to provide remote access to the switch.
Cisco IOS switches have physical ports for devices to connect to, but also have one or more switch virtual interfaces (SVIs). These are virtual interfaces, because there is no physical hardware on the device associated with them, rather they are created in software. The virtual interface provides a means to remotely manage a switch over a network that is using IP. Each switch comes with one SVI appearing in the default configuration "out-of-the-box." The default SVI is interface VLAN1. The no shutdown command needs to be issued to activate this interface.
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2.6 Ports and Addresses
Which PDU is processed when a host computer is de-encapsulating a message at the transport layer of the TCP/IP model?
a. bits
b. frame
c. packet
d. segment
what is
d. segment
At the transport layer, a host computer will de-encapsulate a segment to reassemble data to an acceptable format by the application layer protocol of the TCP/IP model.
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3.6 Data Encapsulation
Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)
a. Fiber-optic cabling does not conduct electricity.
b. Fiber-optic cabling has high signal loss.
c. Fiber-optic cabling is primarily used as backbone cabling.
what is
a. Fiber-optic cabling does not conduct electricity.
c. Fiber-optic cabling is primarily used as backbone cabling.
Fiber-optic cabling is primarily used for high-traffic backbone cabling and does not conduct electricity. Multimode fiber uses LEDs for signaling and single-mode fiber uses laser technology. FIber-optic cabling carries signals from only one device to another.
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1.4.5 Fiber-Optic Cabling
A network team is comparing topologies for connecting on a shared media. Which physical topology is an example of a hybrid topology for a LAN?
a. bus
b. extended star
c. ring
what is
b. extended star
An extended star topology is an example of a hybrid topology as additional switches are interconnected with other star topologies. A partial mesh topology is a common hybrid WAN topology. The bus and ring are not hybrid topology types.
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ITN
1.6.2 Topologies