Midterm Spring 2024

What is the special value assigned to the first 24 bits of a multicast MAC address transporting an IPv4 packet?

01-00-5E

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

How many binary bits exist within an IPv6 address?

128

Which is true of the IPv6 header?

40 octets 8 header fields

What are the two sizes (minimum and expected maximum) of an Ethernet frame? (Choose two.)

64 / 1518 bytes

Which of the following are data link layer protocols? (Choose three)

802.11 Ethernet PPP

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

A farm in a rural area without wired broadband access.

What feature automatically negotiates the best speed and duplex setting between interconnecting devices?

Autonegotiation

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 of these is the name for the capacity of a medium to carry data?

Bandwidth

What method is used to manage contention-based access on a wireless network?

CSMA/CA

Which data link layer media access control method does Ethernet use with legacy Ethernet hubs?

CSMA/CD

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

CTRL+Z / end

Which of the following attaches antennas to wireless devices? It can also be bundled with fiber-optic cabling for two-way data transmission.

Coaxial

Which of the following terminates with BNC, N type and F type connectors?

Coaxial

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

DNS / DHCP

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

DNS / DHCP

Which layer is responsible for taking an IP packet and preparing it for transmission over the communications medium?

Data Link Layer

Which lists the Layer 2 and Layer 3 address fields in the correct order?

Destination NIC address Source NIC address Source IP adress Destination IP address

What process is used to place one message inside another message for transfer from the source to the destination?

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

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 physical layer is only concerned with wired network connections.

False

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

Flow Control / Access method / Response timeout

What is the term for splitting up an IP packet when forwarding it from one medium to another medium with a smaller MTU?

Fragmentation

What PDU is received by the physical layer for encoding and transmission?

Frame

A web client is sending a request for a webpage to a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to prepare the request for transmission?

HTTP, TCP, IP, Ethernet

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

Which organization defines standards for the network access layer (i.e., the OSI physical and data link layers)?

IEEE

Which standards organization oversees development of wireless LAN standards?

IEEE

Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.)

IEEE ITU

Which two protocols function at the internet layer? (Choose two.)

IP ICMP

Which three options are major issues associated with IPv4? (Choose three.)

IP address depletion Increased network complexity and internet routing table expansion lock of end-to-end connectivity

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

Which two functions or operations are performed by the MAC sublayer? (Choose two.)

It adds a header and trailer to form an OSI Layer 2 PDU It is responsible for Media Access Control

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 function or operation is performed by the LLC sublayer?

It communicates with upper protocol layers

Which two characteristics describe Ethernet technology? (Choose two.)

It is supported by IEEE 802.3 standards. It uses unique MAC addresses to ensure that data is sent to the appropriate destination.

What are two benefits of using a layered network model? (Choose two.)

It prevents technology in one layer from affecting other layers It assists in protocol design

What are two services performed by the data link layer of the OSI model? (Choose two.)

It provides media access control and performs error detection. It accepts Layer 3 packets and encapsulates them into frames.

Which data link sublayer controls the network interface through software drivers?

LLC

Which data link sublayer works with the upper layers to add application information for delivery of data to higher level protocols?

LLC

The IEEE 802 LAN/MAN data link layer consists of which two sublayers? (Choose two.)

Logical Link Control LLC Media Access Control MAC

What attribute of a NIC would place it at the data link layer of the OSI model?

MAC address

The media access control method used depends on which two criteria?

Media Sharing Topology

Which of the following fiber-optic cable types can help data travel approximately 500 meters?

Multimode

Which of the following fiber-optic cable types use light emitting diodes (LEDs) as a data light source transmitter?

Multimode

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

What is the responsibility of the MAC sublayer?

Provides the method to get the frame on and off the media

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

What type of cable is used to connect a workstation serial port to a Cisco router console port?

Rollover

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

Routing Protocols / Messaging / Internet Protocol

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

Scalability

Which of the following fiber-optic cable types use lasers in a single stream as a data light source transmitter?

Single-mode

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

Which is true of the IPv6 packet header?

The Hop Limit field replaces the IPv4 Time to Live field

Which characteristic describes an IPv6 enhancement over IPv4?​

The IPv6 header is simpler than the IPv4 header is, which improves packet handling.

How does the network layer use the MTU value?

The MTU is passed to the network layer by the data link layer

What addressing information is recorded by a switch to build its MAC address table?

The source Layer 2 address of incoming frames

Although CSMA/CD is still a feature of Ethernet, why is it no longer necessary?

The use of full-duplex capable Layer 2 switches

Which is a characteristic of static routes?

They are manually configured

Which of these is a measure of the transfer of bits across the media?

Throughput

Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?

Transport

Which OSI layer sends segments to be encapsulated in an IPv4 or IPv6 packet?

Transport layer

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

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

Which of the following wireless standards is best suited for industrial and IoT environments?

Zigbee

What is auto-MDIX?

a feature that detects Ethernet cable type

What does a code of "O" indicate next to a route in the routing table?

a route learned dynamically from OSPF

What is a characteristic of UTP cabling?

cancellation

Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?

data link

Which protocol stack layer encapsulates data into frames?

data link

This type of route is also known as a gateway of last resort.

default route

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

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

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 LAN topology is a hybrid topology?

extended star

Which duplex communication method is used in WLANs?

half-duplex

Which two options are improvements provided by IPv6 as compared to IPv4? (Choose two.)

increased the IP address space Uses a simpler header to provide improved packet handeling

What is done to an IP packet before it is transmitted over the physical medium?

it is encapsulated in a Layer 2 frame

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

login

Which two commands could be entered on a Windows host to view its IPv4 and IPv6 routing table? (Choose two.)

netstat -r route print

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

What is the PDU associated with the transport layer?

segment

What is the command used on a Cisco IOS router to view the routing table?

show IP route

What information is added during encapsulation at OSI Layer 3?

source and destination IP addresses

What is indicated by the term throughput?

the measure of the bits transferred across the media over a given period of time

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

to copy an existing configuration into RAM

Which is a function of the Logical Link Control (LLC) sublayer?

to identify which network layer protocol is being used

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

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

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

transport