Intro to Networks Midterm Study (Module 1-3)

With which type of policy, a router can manage the flow of data and voice traffic, giving priority to voice communications if the network experiences congestion?

QoS

Which memory location on a Cisco router or switch will lose all content when the device is restarted?

RAM

During a routine inspection, a technician discovered that software that was installed on a computer was secretly collecting data about websites that were visited by users of the computer. Which type of threat is affecting this computer?

Spyware

Which option creates a secure connection for remote workers?

Virtual Private Network (VPN)

Which option describes malicious code running on user devices?

Virus, work, or Trojan horse

Which network infrastructure provides access to other networks over a large geographical area, which is often owned and managed by a telecommunications service provider?

WAN

In which scenario would the use of a WISP be recommended?

a farm in a rural area without wired broadband access

Which is the command to configure a banner to be displayed when connecting to a switch?

banner motd $ Keep out $

What type of communication will send a message to all devices on a local area network?

broadcast

Which protocol stack layer encapsulates data into frames?

data link

What is the order of the two addresses in the data link frame?

destination MAC, source MAC

What is the structure of an IPv4 address called?

dotted-decimal format

What types of standards are developed by the Electronics Industries Alliance (EIA)?

electric wiring and connectors

How is the privileged EXEC mode access secured on a switch?

enable secret class

What is the name of the process of adding protocol information to data as it moves down the protocol stack?

encapsulation

Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators?

extranet

BGP and OSPF are examples of which type of protocol?

routing

A router with a valid operating system contains a configuration file stored in NVRAM. The configuration file has an enable secret password but no console password. When the router boots up, which mode will display?

user EXEC mode

Which IOS mode are you in if the Switch> prompt is displayed?

user EXEC mode

Which network infrastructure might an organization use to provide secure and safe access to individuals who work for a different organization but require access to the organization's data?

Extranet

True or False? Data Link addresses are physical so they never change in the data link frame from source to destination.

False

True or false? The right-most part of an IP address is used to identify the network that a device belongs to.

False

Which type of network topology lets you see which end devices are connected to which intermediary devices and what media is being used?

Logical Topology

Which IOS mode allows access to all commands and features?

Privileged EXEC mode

UDP and TCP belong to which layer of the TCP/IP protocol?

transport

Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? (Choose two.) *CTRL+Z *disable *enable *end *exit

*CNTRL+Z *end

Which two protocols are service discovery protocols? (Choose two.) *DNS *TCP *SSH *DHCP

*DNS *DHCP

Which two protocols belong in the TCP/IP model application layer? *EIGRP *DNS *OSPF *ICMP *DHCP

*DNS *DHCP

Formatting *Flow Control *Sequence Numbers Access Method *Retransmit Time *Response Timeout

*Flow Control *Access Method *Response Timeout

Which three acronyms/initialisms represent standards organizations? (Choose three.) *MAC *IANA *TCP/IP *IEEE *IETF *OSI

*IANA *IEEE *IETF

Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery? (Choose two.) *IPv4 *TCP *ICMPv4 IPv6 *UDP *ICMPv6

*ICMPv4 *ICMPv6

Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.) *Data link layer addresses are logical and network addresses are physical *Network layer addresses are expressed as 12 hexadecimal digits and data link layer addresses are decimal. *Network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits. *Data link layer addresses are physical and network layer addresses are logical *Network layer addresses are either 32 or 128 bits in length. *Data link layer addresses are 32 bits in length.

*Network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits. *Data link layer addresses are physical and network layer addresses are logical *Network layer addresses are either 32 or 128 bits in length.

Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.) *File Transfer *Address Resolution *Routing Protocols *Messaging *Ethernet *Internet Protocol

*Routing Protocols *Messaging *Internet Protocol

Which two statements are true regarding the user EXEC mode? (Choose two.) *The device prompt for this mode ends with the ">" symbol. *Global configuration mode can be accessed by entering the enable command. *Only some aspects of the router configuration can be viewed. *All router commands are available *Interfaces and routing protocols can be configured.

*The device prompt for this mode ends with the ">" symbol. *Only some aspects of the router configuration can be viewed.

What are two functions of end devices on a network? (Choose two.) *They are the interface between humans and the communication network *They direct data over alternate paths in the event of link failures. *They provide the channel over which the network message travels. *They filter the flow of data to enhance security. *They originate the data that flows through the network.

*They are the interface between humans and the communication network *They originate the data that flows through the network.

Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.) *selecting the best command to accomplish a task *displaying a list of all available commands within the current mode *determining which option, keyword, or argument is available for the entered command. *allowing the user to complete the remainder of an abbreviated command with the TAB key *providing an error message when a wrong command is submitted.

*displaying a list of all available commands within the current mode *determining which option, keyword, or argument is available for the entered command.

What are two characteristics of a scalable network? (Choose two.) *is not as reliable as a small network *grows in size without impacting existing users *suitable for modular devices that allow for expansion *easily overloaded with increased traffic *offers limited number of applications

*grows in size without impacting existing customers *suitable for modular devices that allow for expansion

Which two devices are intermediary devices? (Choose two) *hosts *routers *servers *switches

*routers *switches

Which two Internet connection options do not require that physical cables be run to the building? (Choose two.) *satellite *DSL *dedicated lease line *cellular *dialup

*satellite *cellular

When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.) *the hostname should be written in all lower case characters. *the hostname should end with a special character. *the hostname should begin with a letter. *the hostname should be fewer than 64 characters in length. *the hostname should contain no spaces.

*the hostname should begin with a letter. *the hostname should be fewer than 64 characters in length. *the hostname should contain no spaces.

To what subnet does the IP address 10.1.100.50 belong if a subnet mask of 255.255.0.0 is used?

10.1.0.0

Which protocol operates at the network access layer of the TCP/IP model?

Ethernet

Which access method would be the most appropriate if you call your manager to tell him you cannot access your router in another city over the internet and he provides you with the information to access the router through a telephone connection?

Aux

Which feature describes using personal tools to access information and communicate across a business or campus network?

BYOD

How does BYOD change the way in which businesses implement networks?

BYOD provides flexibility in where and how users can access network resources

A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe?

Bring Your own Device (BYOD)

Which feature contains options such as Public, Private, Custom and Hybrid?

Cloud Computing

Which access method would be most appropriate if you were in the equipment room with a new switch that needs to be configured?

Console

Which access method would be most appropriate if your manager gave you a special cable and told you to use it to configure the switch?

Console

Which attack slows down or crashes equipment and programs?

Denial of Service (DoS)

What is the process of converting information into the proper form for transmission?

Encoding

When data is encoded as pulses of light, which media is being used to transmit the data?

Fiber-optic Cable

Which option blocks unauthorized access to your network?

Firewall

Which step of the communication process is concerned with properly identifying the address of the sender and receiver?

Formatting

A device receives a data link frame with data and processes and removes the Ethernet information. What information would be the next to be processed by the receiving device?

IP at the internet layer

Which connections are specialized ports on a networking device that connect to individual networks?

Interface

This standards organization is responsible for IP address allocation and domain name management.

Internet Assigned Numbers Authority (IANA)

This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones.

Internet Engineering Task Force (IETF)

What is the function of the shell in an OS?

It interfaces between the users and the kernel.

What is an ISP?

It is an organization that enables individuals and businesses to connect to the Internet.

What is the Internet?

It provides connections through interconnected global networks.

Which network infrastructure provides access to users and end devices in a small geographical area, which is typically a network in a department in an enterprise, a home, or small business?

LAN

Which delivery method is used to transmit information to one or more end devices, but not all devices on the network?

Multicast

Which connection physically connects the end device to the network?

NIC

Which memory location on a Cisco router or switch stores the startup configuration file?

NVRAM

An administrator has just changed the IP address of an interface on an IOS device. What else must be done in order to apply those changes to the device?

Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed.

Which type of network topology lets you see the actual location of intermediary devices and cable installation?

Physical Topology

Which feature is being used when connecting a device to the network using an electrical outlet?

Powerline

When designers follow accepted standards and protocols, which of the four basic characteristics of network architecture is achieved?

Scalability

Confidentiality, integrity, and availability are requirements of which of the four basic characteristics of network architecture?

Security

This protocol is responsible for guaranteeing the reliable delivery of information.

TCP

Which access method would be the most appropriate in-band access to the IOS over a network connection?

Telnet/SSH

True or false. Standards organizations are usually vendor-neutral.

True

True or false? Frames exchanged between devices in different IP networks must be forwarded to a default gateway.

True

What is the default SVI on a Cisco switch?

VLAN1

An employee wants to access the network of the organization remotely, in the safest possible way. What network feature would allow an employee to gain secure remote access to a company network?

VPN

Which feature is a good conferencing tool to use with others who are located elsewhere in your city, or even in another country?

Video Communications

Which feature uses the same cellular technology as a smartphone?

Wireless Broadband

Which option describes a network attack that occurs on the first day that a vulnerability becomes known?

Zero-day or Zero-hour

Which device performs the function of determining the path that messages should take through internetworks?

a router

Which functionality is provided by DHCP?

automatic assignment of an IP address to each host

Which type of access is secured on a Cisco router or switch with the enable secret command?

privileged EXEC

A college is building a new dormitory on its campus. Workers are digging in the ground to install a new water pipe for the dormitory. A worker accidentally damages a fiber optic cable that connects two of the existing dormitories to the campus data center. Although the cable has been cut, students in the dormitories only experience a very short interruption of network services. What characteristic of the network is shown here?

fault tolerance

Having multiple paths to a destination is known as redundancy. This is an example of which characteristic of network architecture?

fault tolerance

How is an IPv4 address represented?

four decimal numbers between 0 and 255 separated by periods

Which IOS mode are you in if the Switch(config)# prompt is displayed?

global configuration mode

What is the command to assign the name "Sw-Floor-2" to a switch?

hostname Sw-Floor-2

Which of the following is the name for all computers connected to a network that participate directly in network communication?

hosts

Which statement is true about the running configuration file in a Cisco IOS device?

it affects the operation of the device immediately when modified

Which command enables password authentication for user EXEC mode access on a switch?

login

What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users?

scalability

What is the PDU associated with the transport layer?

segment

What is the process of dividing a large data stream into smaller pieces prior to transmission?

segmentation

Which command encrypts all plaintext passwords access on a switch?

service password-encryption

What is used to determine the network portion of an IPv4 address?

subnet mask

What type of interface has no physical port associated with it?

switch virtual interface (svi)

What type of network must a home user access in order to do online shopping?

the internet

In computer communication, what is the purpose of message encoding?

to convert information to the appropriate form for transmission

Why would a technician enter the command copy startup-config running-config?

to copy an existing configuration into RAM

What is the purpose of the sequencing function in network communication?

to uniquely label transmitted segments of data for proper reassembly by the receiver