ccna questions

What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address? 1. It will discard the frame. 2. It will forward the frame to the next host. 3. It will remove the frame from the media. 4. It will strip off the data-link frame to check the destination IP address.

1. It will discard the frame.

What is the purpose of having a converged network? 1. to provide high speed connectivity to all end devices 2. to make sure that all types of data packets will be treated equally 3. to achieve fault tolerance and high availability of data network infrastructure devices 4. to reduce the cost of deploying and maintaining the communication infrastructure

4. to reduce the cost of deploying and maintaining the communication infrastructure

What are three characteristics of multicast transmission? The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255. A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255. Computers use multicast transmission to request IPv4 addresses. Multicast messages map lower layer addresses to upper layer addresses.

A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255.

Which scenario describes a function provided by the transport layer? 1. A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network. 2. A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header. 3. A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window. 4. A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.

A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.

What method is used to manage contention-based access on a wireless network? 1. CSMA/CD 2. priority ordering 3. CSMA/CA 4. token passing

CSMA/CA

What are two characteristics of fiber-optic cable? (Choose two.) 1. It is not affected by EMI or RFI. 2. Each pair of cables is wrapped in metallic foil. 3. It combines the technique of cancellation, shielding, and twisting to protect data. 4. It typically contains 4 pairs of fiber-optic wires. 5. It is more expensive than UTP cabling is.

It is more expensive than UTP cabling is. It is not affected by EMI or RFI.

What is a characteristic of the LLC sublayer? 1. It provides the logical addressing required that identifies the device. 2. It provides delimitation of data according to the physical signaling requirements of the medium. 3. It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media. 4. It defines software processes that provide services to the physical layer.

It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.

Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network? 1. Data is sent from the internet layer to the network access layer. 2. Packets are sent from the network access layer to the transport layer. 3. Segments are sent from the transport layer to the internet layer. 4. Frames are sent from the network access layer to the internet layer.

Segments are sent from the transport layer to the internet layer.

Refer to the exhibit. From global configuration mode, an administrator is attempting to create a message-of-the-day banner by using the command banner motd V Authorized access only! Violators will be prosecuted! V When users log in using Telnet, the banner does not appear correctly. What is the problem?

The delimiting character appears in the banner message.

What is a characteristic of a fault tolerant network? 1. a network that protects confidential information from unauthorized access 2. a network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing users 3. a network that supports a mechanism for managing congestion and ensuring reliable delivery of content to all users 4. a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure

a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure

A network engineer is analyzing reports from a recently performed network baseline. Which situation would depict a possible latency issue? 1. a change in the bandwidth according to the show interfaces output 2. a next-hop timeout from a traceroute 3. an increase in host-to-host ping response times 4. a change in the amount of RAM according to the show version output

an increase in host-to-host ping response times

What addresses are mapped by ARP? 1. destination MAC address to a destination IPv4 address 2. destination IPv4 address to the source MAC address 3. destination IPv4 address to the destination host name 4. destination MAC address to the source IPv4 address

destination MAC address to a destination IPv4 address

What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.) 1. error correction through a collision detection method 2. session control using port numbers 3. data link layer addressing 4. placement and removal of frames from the media 5. detection of errors through CRC calculations 6. delimiting groups of bits into frames 7. conversion of bits into data signals

data link layer addressing detection of errors through CRC calculations delimiting groups of bits into frames

Which switching method has the lowest level of latency? 1. cut-through 2. store-and-forward 3. fragment-free 4. fast-forward

fast-forward

What are two examples of the cut-through switching method? (Choose two.) store-and-forward switching fast-forward switching CRC switching fragment-free switching QOS switching

fast-forward switching fragment free

What layer is responsible for routing messages through an internetwork in the TCP/IP model? 1. internet 2. transport 3. network access 4. session

internet

Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.) 1. data link 2. network 3. physical 4. session 5. transport

network transport

What are two characteristics shared by TCP and UDP? (Choose two.) default window size connectionless communication port numbering 3-way handshake ability to to carry digitized voice use of checksum

port numbering use of checksum

What is the TCP mechanism used in congestion avoidance? 1. three-way handshake 2. socket pair 3. two-way handshake 4. sliding window

sliding window

What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server? 1. TCP 2. IP 3. HTTP 4. Ethernet

tcp

A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.) 1. the amount of traffic that is currently crossing the network 2. the sophistication of the encapsulation method applied to the data 3. the type of traffic that is crossing the network 4. the latency that is created by the number of network devices that the data is crossing 5. the bandwidth of the WAN connection to the Internet 6. the reliability of the gigabit Ethernet infrastructure of the backbone

the amount of traffic that is currently crossing the network the type of traffic that is crossing the network the latency that is created by the number of network devices that the data is crossing

A user opens three browsers on the same PC to access http://www.cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify which of the three web browsers should receive the reply? 1. the destination IP address 2. the destination port number 3. the source IP address 4. the source port number

the destination port number

What are two characteristics of Ethernet MAC addresses? (Choose two.) 1. They are globally unique. 2. They are routable on the Internet. 3. They are expressed as 12 hexadecimal digits. 4. MAC addresses use a flexible hierarchical structure. 5. MAC addresses must be unique for both Ethernet and serial interfaces on a device.

they are globally unique They are expressed as 12 hexadecimal digits.

In computer communication, what is the purpose of message encoding? 1. to convert information to the appropriate form for transmission 2. to interpret information 3. to break large messages into smaller frames 4. to negotiate correct timing for successful communication

to convert information to the appropriate form for transmission

What is the function of the HTTP GET message? 1. to request an HTML page from a web server 2. to send error information from a web server to a web client 3. to upload content to a web server from a web client 4. to retrieve client email from an email server using TCP port 110

to request an HTML page from a web server

What are two functions of NVRAM? (Choose two.) 1. to store the routing table 2. to retain contents when power is removed 3. to store the startup configuration file 4. to contain the running configuration file 5. to store the ARP table

to retain contents when power is removed to store the startup configuration file

What are two actions performed by a Cisco switch? (Choose two.) 1. building a routing table that is based on the first IP address in the frame header 2. using the source MAC addresses of frames to build and maintain a MAC address table 3. forwarding frames with unknown destination IP addresses to the default gateway 4. utilizing the MAC address table to forward frames via the destination MAC address 5. examining the destination MAC address to add new entries to the MAC address table

using the source MAC addresses of frames to build and maintain a MAC address table utilizing the MAC address table to forward frames via the destination MAC address