Module 1 - 13

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

(BYOD) Bring Your Own Device

Which two protocols are service discovery protocols? (Choose two.)

(DNS) Dynamic Host Configuration Protocol (DHCP) Dynamic Host Configuration Protocol Service discovery protocols, such as DNS and DHCP enable automatic detection of service. DHCP is used to discover services for automatic IP address allocation and DNS for name-to-IP address resolution services.

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) Local Area Network

Which connection physically connects the end device to the network?

(NIC) Network Interface Card

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) Quality of Service

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) Virtual Private Network

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) Wide Area Network

Which feature uses the same cellular technology as a smart phone?

Wireless Broadband

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

Zero-day or Zero-hour

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

a farm in a rural area without wired broadband access

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

a router

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

enable secret class Securing access to the EXEC mode on a Cisco switch is accomplished with the enable secret command followed by the password. In this example the command is Switch(config)# enable secret class.

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

login User EXEC mode access through the console port is enabled with the login command entered in line mode. For example: Switch(config-line)# login.

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 Sequencing uniquely identifies or labels each transmitted segment with a sequence number that is used by the receiver to reassemble the segments in the proper order.

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

transport TCP and UDP are both transport layer protocols.

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

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

Extranet

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

False The correct answer is False. Data link addresses change within the data link frame when the receiving device is not on the same network.

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

False The correct answer is False. It is the left-most portion of an IP address that identifies the network. The right-most portion is used to identify the specific device or interface.

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

Fault Tolerance

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

Fiber-optic cable

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 The AUX port on a Cisco device provided out-of-band connections over a telephone line.

MODULE - 2

BASIC SWITCH AND END DEVICE CONFIGURATION

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

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

Which option blocks unauthorized access to your network?

Firewall

Which three are components of message timing? (Choose three.)

Flow Control Access Method Response timeout

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 Because a new switch would not have any initial configurations, it could only be configured through the console port.

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 Connecting a computer to a Cisco device through the console port requires a special console cable.

Which two protocols belong in the TCP/IP model application layer?

DNS DHCP DHCP and DNS are both application layer protocols.

Which attack slows down or crashes equipment and programs?

Denial of Service (DoS)

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

Encapsulation As data moves down the protocol stack, protocol data is added to the original data. This process is known as encapsulation.

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

Encoding

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

Ethernet Ethernet is a network access layer protocol.

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

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

Formatting

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

Global Configuration Mode Global configuration mode is identified by the (config)# prompt.

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

Hosts

Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery? (Choose two.)

ICMPv4 ICMPv6 ICMPv4 and ICMPv6 provide feedback when errors occur.

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 Data is de-encapsulated so the next layer to receive the data would be the internet layer.

Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.)

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 MAC addresses are physical addresses and 48 bits or 12 hex digits in length. IPv4 addresses and IPv6 addresses are logical. IPv4 addresses are 32 bits and IPv6 addresses are 128 bits.

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 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) IANA is responsible for overseeing and managing IP address allocation, domain name management, and protocol identifiers for ICANN.

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) The IETF develops and maintains the specifications for new protocols and updates to existing protocols through published documents called Request for Comments (RFCs).

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

It affects the operation of the device immediately when modified

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

Multicast

MODULE - 1

NETWORKING TODAY

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

NVRAM

MODULE - 3

PROTOCOLS AND MODELS

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

Which IOS mode allows access to all commands and features?

Privileged EXEC mode (or enable mode)The privileged EXEC mode allows access to all commands. Higher level commands like global configuration mode and subconfiguration modes can only be reached from the privileged EXEC mode.

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

RAM

Which two devices are intermediary devices? (Choose two)

Routers and Switches

Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.)

Routing Protocols Messaging Internet Protocol IP (Internet Protocol), ICMP (Messaging), and Routing Protocols are services provided at the Internet Layer.

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

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

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

Switch Virtual Interface (SVI) Switch virtual interfaces (SVIs) are virtual and have no physical port. Layer 2 switches use SVIs for remote management.

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

TCP Transmission Control Protocol (TCP) manages the conversation between end devices and guarantees the reliable delivery of information.

What are two functions of end devices on a network? (Choose two.)

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

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

Telnet/SSH Both Telnet and SSH are in-band access methods that require an active network connection to the device.

Which two statements are true regarding the user EXEC mode? (Choose two.)

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

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

True The correct answer is True. Most standards organizations are vendor-neutral, non-profit organizations that develop and promote open standards.

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

True The correct answer is True. When two devices are on different IP networks, frames cannot be sent directly to the receiver since it is on a different logical network. The frames must first be forwarded to a default gateway (router).

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

User EXEC mode (or view-only mode) The > prompt after the device name identifies user EXEC mode.

What is the default SVI on a Cisco switch?

VLAN1

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 option creates a secure connection for remote workers?

Virtual Private Network (VPN)

Which option describes malicious code running on user devices?

Virus, Worm, or Trojan Horse

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

the internet

Which functionality is provided by DHCP?

automatic assignment of an IP address to each host

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

banner motd $Keep Out$ The command to set a banner stating "Keep out" that will be displayed when connection to a Cisco switch is Switch(config)# banner motd $ Keep out $

Which two Internet connection options do not require that physical cables be run to the building? (Choose two.)

cellular satellite

Which protocol stack layer encapsulates data into frames?

data link The data link layer encapsulates data into a frame.

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

destination MAC, source MAC The data link frame addressing consists of a destination and source MAC address in that order.

Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.)

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

What is the structure of an IPv4 address called?

dotted-decimal format IPv4 addresses are written in dotted-decimal format. For example: 192.168.1.1.

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

electric wiring and connectors The Electronics Industries Alliance (EIA) develops standards related to electrical wiring, connectors, and network equipment racks.

Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? (Choose two.)

end & 'CTRL + Z' To return from any prompt, all the way down to privileged EXEC mode, type the end command or by pressing the CTRL+Z keys simultaneously on the keyboard.

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

How is an IPv4 address represented?

four decimal numbers between 0 and 255 separated by periods IPv4 addresses are written as four groups of decimal numbers separated by periods. For example: 192.168.1.1.

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

hostname Sw-Floor-2 The global configuration command to set the host name on a Cisco device is hostname. So, in this example the full command is Switch(config)# hostname Sw-Floor-2.

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

privileged EXEC

BGP and OSPF are examples of which type of protocol?

routing Border Gateway Protocol (BGP) Open Shortest Path First (OSPF) BGP and OSPF are routing protocols. They enable routers to exchange route information to reach remote networks.

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 The transport layer PDU is known as a segment.

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

segmentation Segmentation is the process of dividing a large data stream into smaller pieces which are then transmitted to the receiver.

Which command encrypts all plaintext passwords access on a switch?

service password-encryption The service password-encryption command entered in global configuration mode will encrypt all plaintext passwords.

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

subnet mask It is the subnet mask used in IPv4 that is used to determine the network portion of an IPv4 address.

What are two characteristics of a scalable network? (Choose two.)

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

When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.)

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