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WorksheetsPage 1
Total questions: 57
Worksheet time: 30mins
Which type of security threat would be responsible if a spreadsheet add-on disables the local software firewall?
brute-force attack
Trojan horse
DoS
buffer overflow
Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?
User Datagram Protocol field
transport layer error check field
flow control field
frame check sequence field
error correction process field
A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network?
255.255.255.248
255.255.255.0
255.255.255.128
255.255.255.192
What service is provided by POP3?
Retrieves email from the server by downloading the email to the local mail application of the client
Sends outbound mail from a client to a mail server
Synchronizes mail and folders between client and server, leaving messages on the server
Delivers web pages from a server to a browser
What two security solutions are most likely to be used only in a corporate environment? (Choose two.)
antispyware
virtual private networks
intrusion prevention systems
strong passwords
antivirus software
What characteristic describes antivirus software?
applications that protect end devices from becoming infected with malicious software
a network device that filters access and traffic coming into a network
a tunneling protocol that provides remote users with secure access into the network of an organization
software on a router that filters traffic based on IP addresses or applications
What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?
It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host.
It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host.
It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.
A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?
DNS
DHCP
TFTP
. An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)
Configure the IP domain name on the router
Generate the SSH keys.
Enable inbound vty SSH sessions.
Generate two-way pre-shared keys.
Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)
implements a process to delimit fields within an Ethernet 2 frame
implements trailer with frame check sequence for error detection
places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
handles communication between upper layer networking software and Ethernet NIC hardware
Case 2: places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame; adds Ethernet control information to network protocol data; responsible for internal structure of Ethernet frame; enables IPv4 and IPv6 to utilize the same physical medium; implements trailer with frame check sequence for error detection. Which Ethernet component is described?
Ethernet LLC sublayer
responsible for internal structure of Ethernet frame
implements trailer with frame check sequence for error detection
Network layer protocol (IP)
Case 3: integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper; enables IPv4 and IPv6 to utilize the same physical medium; handles communication between upper layer networking software and Ethernet NIC hardware; adds Ethernet control information to network protocol data; implements CSMA/CD over legacy shared half-duplex media. Which Ethernet component is described?
Ethernet LLC sublayer
integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper
implements CSMA/CD over legacy shared half-duplex media
Physical layer medium specification
Case 4: applies delimiting of Ethernet frame fields to synchronize communication between nodes; places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame; adds Ethernet control information to network protocol data; implements trailer with frame check sequence for error detection; handles communication between upper layer networking software and Ethernet NIC hardware. Which Ethernet component is described?
Ethernet LLC sublayer
applies delimiting of Ethernet frame fields to synchronize communication between nodes
implements trailer with frame check sequence for error detection
Physical layer medium specification
An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?
all IPv6 enabled devices on the local link
all IPv6 DHCP servers
all IPv6 enabled devices across the network
all IPv6 configured routers on the local link
What are the three parts of an IPv6 global unicast address? (Choose three.)
subnet ID
subnet mask
broadcast address
global routing prefix
interface ID
A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)
mobility options
packet collision
interference
security
coverage area
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?
Enter CTRL-Z at the privileged mode prompt.
Exit global configuration mode.
Power cycle the device.
Reboot the device.
Exit privileged EXEC mode and press Enter.
What method is used to manage contention-based access on a wireless network?
token passing
CSMA/CA
priority ordering
CSMA/CD
What is a function of the data link layer?
provides for the exchange of frames over a common local media
routing packets between different networks
establishing end-to-end transport connections
providing application-level services
What is the purpose of the TCP sliding window?
to ensure that segments arrive in order at the destination
to end communication when data transmission is complete
to inform a source to retransmit data from a specific point forward
to request that a source decrease the rate at which it transmits data
What characteristic describes spyware?
a network device that filters access and traffic coming into a network
software that is installed on a user device and collects information about the user
an attack that slows or crashes a device or network service
the use of stolen credentials to access private data
Which switching method drops frames that fail the FCS check?
store-and-forward switching
borderless switching
ingress port buffering
cut-through switching
Which range of link-local addresses can be assigned to an IPv6-enabled interface?
FECO::/10
FDEE::/7
FE80::/10
FF00::/8
What service is provided by FTP?
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
An application that allows real-time chatting among remote users.
Allows for data transfers between a client and a file server.
Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? (Choose two.)
DNS server
source port number
HTTP server
source MAC address
default gateway
What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process?
0C6F:65FF:FEC2:BDF8
1E6F:65FF:FEC2:BDF8
C16F:65FF:FEC2:BDF8
106F:65FF:FEC2:BDF8
Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC2. In this scenario, what will happen next?
SW1 will send an ARP reply with the SW1 Fa0/1 MAC address.
SW1 will send an ARP reply with the PC2 MAC address.
PC2 will send an ARP reply with the PC2 MAC address.
RT1 will send an ARP reply with the RT1 Fa0/0 MAC address.
RT1 will send an ARP reply with the PC2 MAC address.
What service is provided by BOOTP?
Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
Allows for data transfers between a client and a file server.
Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network.
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
What characteristic describes adware?
a network device that filters access and traffic coming into a network
software that is installed on a user device and collects information about the user
the use of stolen credentials to access private data
an attack that slows or crashes a device or network service
When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached?
cut-through
store-and-forward
fast-forward
fragment-free
Which related network model does this statement describe: requires a specific user interface?
peer-to-peer network
peer-to-peer application
Which related network model does this statement describe: no dedicated server is required?
peer-to-peer network
peer-to-peer application
Which related network model does this statement describe: a background service is required?
peer-to-peer network
peer-to-peer application
Which related network model does this statement describe: client and server roles are set on a per request basis?
peer-to-peer network
peer-to-peer application
What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.)
error detection
frame delimiting
accessing the media
data encapsulation
logical addressing
Refer to the CLI output of show ip interface brief. Choose three statements that are correct.
Two physical interfaces have been configured.
The switch can be remotely managed.
One device is attached to a physical interface.
Passwords have been configured on the switch.
The default SVI has been configured.
What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64?
2001:DA48::/64
2001:DA48:FC5::A4:/64
2001:DA48:FC5:A4::/64
2001::/64
Match the firewall function to the type of threat protection it provides to the network. Select the protection type that best matches "prevents access by port number." (Not all options are used.)
packet filtering
URL filtering
network address translator
stateful packet inspection
application filtering
Match the firewall function to the type of threat protection it provides to the network. Select the protection type that best matches "prevents access based on IP or MAC address." (Not all options are used.)
packet filtering
URL filtering
network address translator
stateful packet inspection
application filtering
Match the firewall function to the type of threat protection it provides to the network. Select the protection type that best matches "prevents unsolicited incoming sessions." (Not all options are used.)
packet filtering
URL filtering
network address translator
stateful packet inspection
application filtering
Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior?
syslog records and messages
the network performance baseline
debug output and packet captures
network configuration files
How does the service password-encryption command enhance password security on Cisco routers and switches?
It requires encrypted passwords to be used when connecting remotely to a router or switch with Telnet.
It encrypts passwords that are stored in router or switch configuration files.
It requires that a user type encrypted passwords to gain console access to a router or switch.
It encrypts passwords as they are sent across the network.
Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)
The Source Address field name from IPv4 is kept in IPv6.
The Version field from IPv4 is not kept in IPv6.
The Destination Address field is new in IPv6.
The Header Checksum field name from IPv4 is kept in IPv6.
The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.
A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices: IP phones – 22 addresses; PCs – 20 addresses needed; Printers – 2 addresses needed; Scanners – 2 addresses needed. The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?
255.255.255.224
255.255.255.252
255.255.255.240
255.255.255.248
What characteristic describes identity theft?
the use of stolen credentials to access private data
software on a router that filters traffic based on IP addresses or applications
software that identifies fast-spreading threats
a tunneling protocol that provides remote users with secure access into the network of an organization
A network administrator is adding a new LAN to a branch office. The new LAN must support 200 connected devices. What is the smallest network mask that the network administrator can use for the new network?
255.255.255.240
255.255.255.0
255.255.255.248
255.255.255.224
What are three commonly followed standards for constructing and installing cabling? (Choose three.)
cable lengths
connector color
pinouts
connector types
Refer to the exhibit. What is wrong with the displayed termination?
The wire pairs are untwisted too far back from the connector.
The jacket is not seated inside the connector strain relief.
The pinout order does not match TIA/EIA-568B.
The cable shield is shorted to a pin.
Refer to the RJ-45 connector image. What is the most accurate problem with this cable termination?
The woven copper braid should not have been removed.
The wrong type of connector is being used.
The untwisted length of each wire is too long.
The wires are too thick for the connector that is used.
Match the characteristic to the correct category. Select one: IP address, MAC address, or Not used. Characteristic: contained in the Layer 3 header
IP address
MAC address
Not used
Match the characteristic to the correct category. Select one: IP address, MAC address, or Not used. Characteristic: contained in the Layer 2 header
IP address
MAC address
Not used
Match the characteristic to the correct category. Select one: IP address, MAC address, or Not used. Characteristic: separated into OUI and a unique identifier
IP address
MAC address
Not used
Match the characteristic to the correct category. Select one: IP address, MAC address, or Not used. Characteristic: separated into a network portion and a unique identifier
IP address
MAC address
Not used
Match the characteristic to the correct category. Select one: IP address, MAC address, or Not used. Characteristic: 32 or 128 bits
IP address
MAC address
Not used
Match the characteristic to the correct category. Select one: IP address, MAC address, or Not used. Characteristic: 48 bits
IP address
MAC address
Not used
Match the characteristic to the correct category. Select one: IP address, MAC address, or Not used. Characteristic: 64 bits
IP address
MAC address
Not used
A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting?
IMAP
POP3
SMTP
HTTPS
