CCNA 200-301 KEY VOCABULARY TERMS. EXAM

PDF Download

CCNA 200-301 KEY VOCABULARY TERMS. EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -76 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Frame Check Sequence (FCS)

Answer:

A field in many data link trailers used as part of the error-detection process.

Question 2: PDU

Answer:

Protocol Data Unit.A generic term referring to the header defined by some layer of a networking model, and the data encapsulated by the header (sometimes the trailer as well ) of that layer, does not include any lower layers headers and trailers just like a packet.

Question 3: Layer 3 switch

Answer:

A switch that can also do routing.we prefer routers however when you need to consider cost and you don't need as much processing power this is a good option

Question 4: root cost

Answer:

root cost The STP cost from a nonroot switch to reach the root switch, as the sum of all STP costs for all ports out which a frame would exit to reach the root.

Question 5: static access interface

Answer:

A LAN network design term, synonymous with the term access interface, but emphasizing that the port is assigned to one VLAN as a result of static configuration rather than through some dynamic process.

Question 6: startup-config file

Answer:

In Cisco IOS switches and routers, the name of the file that resides in NVRAM memory, holding the device's configuration that will be loaded into RAM as the running-config file when the device is next reloaded or powered on.

Question 7: Subnetting

Answer:

The process of subdividing a Class A, B, or C network into smaller groups called subnets.

Question 8: Telco

Answer:

A common abbreviation for telephone company.Most often used in reference to the telco box.

Question 9: trunk

Answer:

In campus LANs, an Ethernet segment over which the devices add a VLAN header that identifies the VLAN in which the frame exists.typically trunks are what you want to configure to pass data to the next device also known as untagged.

Question 10: AAA server

Answer:

AAA server A server that holds security information and provides services related to user login, particularly authentication (is the user who he says he is?), authorization (once authenticated, what do we allow the user to do?), and accounting (tracking the user).

Question 11: Frame

Answer:

A term referring to a data link header and trailer, plus the data encapsulated between the header and trailer.These are sent on layer 1 for TCP/IP and layer 2 for OSI

Question 12: IP subnet

Answer:

Subdivisions of a Class A, B, or C network, as configured by a network administrator. Subnets allow a single Class A, B, or C network to be used instead of multiple networks, and still allow for a large number of groups of IP addresses, as is required for efficient IP routing.

Question 13: local username

Answer:

local username A username (with matching password), configured on a router or switch. It is considered local because it exists on the router or switch, and not on a remote server.

Question 14: what is adjacent-layer interaction?

Answer:

The topic of how on one computer, two adjacent layers in in a network model work together, with the lower layer providing services to the higher layer.

Question 15: Encapsulation

Answer:

The placement pf data from a higher layer protocol behind the header or in-between an ethernet header and trailer.

Question 16: ethernet link

Answer:

A generic term for any physical link between two Ethernet nodes, no matter what type of cabling is used.

Question 17: HDLC (High-level Data Link Control)

Answer:

A bit-oriented synchronous data link layer protocol developed by the International Organization for Standardization (ISO).

Question 18: Single-mode fiber (SMF)

Answer:

Fiber-optic cable that allows only a single light wave to pass down the cable.

Question 19: Flood

Answer:

The result of the LAN switch forwarding process for broadcasts and unknown unicast frames. Switches forward these frames out all interfaces, except the interface in which the frame arrived. Switches also flood multicasts by default, although this behavior can be changed.

Question 20: EtherChannel

Answer:

EtherChannel A feature in which up to eight parallel Ethernet segments exist between the same two devices, each using the same speed. May be a Layer 2 EtherChannel, which acts like a single link for forwarding and Spanning Tree Protocol logic, or a Layer 3 EtherChannel,which acts like a single link for the switch's Layer 3 routing logic.

Question 21: what is a packet?

Answer:

A logical grouping of bytes that includes the network layer header and encapsulated data.

Question 22: Multimode Fiber (MMF)

Answer:

Type of fiber-optic cable that uses LEDs and emits light at multiple angles.

Question 23: autonegotiation

Answer:

autonegotiation An IEEE standard mechanism (802.3u) with which two nodes can exchange messages for the purpose of choosing to use the same Ethernet standards on both ends of the link, ensuring that the link functions and functions well.It chooses what it thinks is the best duplex (full or half) based on the information it has of the two links.