What destination MAC address would be included in a frame sent from a source device to a destination device on a remote local network?

The MAC address of the local router interface.

A broadcast MAC address of FF-FF-FF-FF-FF-FF.

The MAC address of the destination device.

What is the primary purpose of the ICMP protocol?

To provide feedback about issues related to IP packet processing

To route packets across different networks

To encrypt data before transmission

To assign IP addresses to devices

Which factor determines TCP window size?

the amount of data the destination can process at one time

the amount of data to be transmitted

the number of services included in the TCP segment

the amount of data the source is capable of sending at one time

What are three responsibilities of the transport layer? (Choose three.)

multiplexing multiple communication streams from many users or applications on the same network

meeting the reliability requirements of applications, if any

identifying the applications and services on the client and server that should handle transmitted data

directing packets towards the destination network

formatting data into a compatible form for receipt by the destination devices

What does a client do when it has UDP datagrams to send?

It queries the server to see if it is ready to receive data.

It sends a simplified three-way handshake to the server.

It sends to the server a segment with the SYN flag set to synchronize the conversation.

What is wrong with the displayed termination?

The untwisted length of each wire is too long.

The woven copper braid should not have been removed.

The wrong type of connector is being used.

The wires are too thick for the connector that is used.

What is the purpose of the FCS field in a frame?

to determine if errors occurred in the transmission and reception

to obtain the MAC address of the sending node

to verify the logical address of the sending node

to compute the CRC header for the data field

What are two actions performed by a Cisco switch? (Choose two.)

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

building a routing table that is based on the first IP address in the frame header

forwarding frames with unknown destination IP addresses to the default gateway

examining the destination MAC address to add new entries to the MAC address table

What is the purpose of ICMP messages?

to provide feedback of IP packet transmissions

to inform routers about network topology changes

to ensure the delivery of an IP packet

to monitor the process of a domain name to IP address resolution

With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

the magnetic field around the adjacent pairs of wire

the use of braided wire to shield the adjacent wire pairs

the reflection of the electrical wave back from the far end of the cable

the collision caused by two nodes trying to use the media simultaneously

The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?

The switch can be remotely managed from a host on another network.

The switch will have a management interface with the address 172.16.100.1.

The switch can communicate with other hosts on the 172.16.100.0 network.

The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1.

What happens when the transport input ssh command is entered on the switch vty lines?

Communication between the switch and remote users is encrypted.

The SSH client on the switch is enabled.

The switch requires a username/password combination for remote access.

The switch requires remote connections via a proprietary client software.

What function does pressing the Tab key have when entering a command in IOS?

It completes the remainder of a partially typed word in a command.

It aborts the current command and returns to configuration mode.

It exits configuration mode and returns to user EXEC mode.

It moves the cursor to the beginning of the next line.

What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?

(config)# service password-encryption

(config)# enable password secret

(config)# enable secret Secret_Password

(config)# enable secret Encrypted_Password

How is SSH different from Telnet?

SSH provides security to remote sessions by encrypting messages and using user authentication. Telnet is considered insecure and sends messages in plaintext.

SSH makes connections over the network, whereas Telnet is for out-of-band access.

SSH requires the use of the PuTTY terminal emulation program. Tera Term must be used to connect to devices through the use of Telnet.

SSH must be configured over an active network connection, whereas Telnet is used to connect to a device from a console connection.

What are two potential network problems that can result from ARP operation? (Choose two.)

On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays.

Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic.

Manually configuring static ARP associations could facilitate ARP poisoning or MAC address spoofing.

Large numbers of ARP request broadcasts could cause the host MAC address table to overflow and prevent the host from communicating on the network.

Multiple ARP replies result in the switch MAC address table containing entries that match the MAC addresses of hosts that are connected to the relevant switch port.

Within a production network, what is the purpose of configuring a switch with a default gateway address?

The default gateway address is used to forward packets originating from the switch to remote networks.

Hosts that are connected to the switch can use the switch default gateway address to forward packets to a remote destination.

A switch must have a default gateway to be accessible by Telnet and SSH.

It provides a next-hop address for all traffic that flows through the switch.

Which statement is correct about network protocols?

They define how messages are exchanged between the source and the destination.

Network protocols define the type of hardware that is used and how it is mounted in racks.

They all function in the network access layer of TCP/IP.

They are only required for exchange of messages between devices on remote networks.

What is true about the Server Message Block protocol?

Clients establish a long term connection to servers.

Different SMB message types have a different format.

SMB messages cannot authenticate a session.

SMB uses the FTP protocol for communication.

What statement describes the function of the Address Resolution Protocol?

ARP is used to discover the MAC address of any host on the local network.

ARP is used to discover the IP address of any host on a different network.

ARP is used to discover the IP address of any host on the local network.

ARP is used to discover the MAC address of any host on a different network.

What are two actions performed by a Cisco switch? (Choose two.)

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

building a routing table that is based on the first IP address in the frame header

forwarding frames with unknown destination IP addresses to the default gateway

examining the destination MAC address to add new entries to the MAC address table

What source IP address does a router use by default when the traceroute command is issued?

the IP address of the outbound interface

the highest configured IP address on the router

the lowest configured IP address on the router

Which statement describes a feature of the IP protocol?

IP relies on upper layer services to handle situations of missing or out-of-order packets.

IP encapsulation is modified based on network media.

IP relies on Layer 2 protocols for transmission error control.

MAC addresses are used during the IP packet encapsulation.

A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?

The computer has an invalid default gateway address.

The cable is not connected properly to the NIC.

The computer has an invalid IP address.

The computer has an incorrect subnet mask.

NWC2

Authored by Phạm Minh Đức Huy undefined

Computers

University

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

Reboot the device.

Enter CTRL-Z at the privileged mode prompt.

Exit global configuration mode.

Power cycle the device.

Exit privileged EXEC mode and press Enter.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the loopback address used for in IPv4 networking?

To route packets to a different network

To test if the TCP/IP stack is functioning correctly

To identify the default gateway

To assign a dynamic IP address

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the prefix length notation for the subnet mask 255.255.255.224?

/28

/27

/26

/25

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main purpose of a subnet mask in IPv4 addressing?

To identify the gateway of the network

To determine the network and host portions of an IP address

To provide security by masking IP addresses

To route packets between networks

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet?

subnetwork 192.168.1.64 subnet mask 255.255.255.192

subnetwork 192.168.1.32 subnet mask 255.255.255.240

subnetwork 192.168.1.64 subnet mask 255.255.255.240

subnetwork 192.168.1.128 subnet mask 255.255.255.192

subnetwork 192.168.1.8 subnet mask 255.255.255.224

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Console

Telnet/SSH

Aux

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why would a Layer 2 switch need an IP address?

to enable the switch to send broadcast frames to attached PCs

to enable the switch to function as a default gateway

to enable the switch to be managed remotely

to enable the switch to receive frames from attached PCs

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NWC2

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

What is the loopback address used for in IPv4 networking?

What is the prefix length notation for the subnet mask 255.255.255.224?

What is the main purpose of a subnet mask in IPv4 addressing?

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet?

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

Why would a Layer 2 switch need an IP address?

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

What are the two most commonly referenced fields in an IPv4 packet header that indicate where the packet is coming from and where it is going? (Choose two.)

What destination MAC address would be included in a frame sent from a source device to a destination device on a remote local network?

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