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TINFO250 > Final Exam (Test #1.2) > Flashcards

Final Exam (Test #1.2) Flashcards

1
Q

What are two ICMPv6 messages that are not present in ICMP for IPv4? (Choose two.)

Neighbor Solicitation
Destination Unreachable
Host Confirmation
Time Exceeded
Router Advertisement
Route Redirection

A

Neighbor Solicitation
Router Advertisement

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2
Q

A client packet is received by a server. The packet has a destination port number of 80. What service is the client requesting?

DHCP
SMTP
DNS
HTTP

A

HTTP

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3
Q

What is an advantage for small organizations of adopting IMAP instead of POP?

  • POP only allows the client to store messages in a centralized way, while IMAP allows distributed storage.
  • Messages are kept in the mail servers until they are manually deleted from the email client.
  • When the user connects to a POP server, copies of the messages are kept in the mail server for a short time, but IMAP keeps them for a long time.
  • IMAP sends and retrieves email, but POP only retrieves email.
A

Messages are kept in the mail servers until they are manually deleted from the email client.

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4
Q

A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?

tracert
ipconfig
netstat
nslookup

A

nslookup

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5
Q

SKIPPED

A

N/A

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6
Q

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 communicate with other hosts on the 172.16.100.0 network.
  • The switch can be remotely managed from a host on another network.
  • The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1.
  • The switch will have a management interface with the address 172.16.100.1.
A

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

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7
Q

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

  • The SSH client on the switch is enabled.
  • The switch requires a username/password combination for remote access.
  • Communication between the switch and remote users is encrypted.
  • The switch requires remote connections via a proprietary client software.
A

Communication between the switch and remote users is encrypted.

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7
Q

SKIPPED

A

N/A

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8
Q

A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this?

DoS
access
reconnaissance
Trojan horse

A

reconnaissance

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9
Q

What service is provided by HTTP?

  • 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.
  • An application that allows real-time chatting among remote users.
  • A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
A

A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

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10
Q

A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

FTP
DHCP
Telnet
SSH

A

DHCP

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11
Q

What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)

  • Switches become overloaded because they concentrate all the traffic from the attached subnets.
  • The ARP request is sent as a broadcast, and will flood the entire subnet.
  • The network may become overloaded because ARP reply messages have a very large payload due to the 48-bit MAC address and 32-bit IP address that they contain.
  • A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table.
  • All ARP request messages must be processed by all nodes on the local network.
A
  • The ARP request is sent as a broadcast, and will flood the entire subnet.
  • All ARP request messages must be processed by all nodes on the local network.
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12
Q

A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

netsh interface ipv6 show neighbor
arp -a
tracert
ping
ipconfig
nslookup
telnet

A

ping
ipconfig
nslookup

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13
Q

During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

  • analyze the destination IP address
  • switch the packet to the directly connected interface
  • look up the next-hop address for the packet
  • discard the traffic after consulting the route table
A

switch the packet to the directly connected interface

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14
Q

What characteristic describes antispyware?

  • applications that protect end devices from becoming infected with malicious software
  • a network device that filters access and traffic coming into a network
  • software on a router that filters traffic based on IP addresses or applications
  • a tunneling protocol that provides remote users with secure access into the network of an organization
A

applications that protect end devices from becoming infected with malicious software

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15
Q

A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?

Telnet
AUX
SSH
Console

A

SSH

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16
Q

What are the two most effective ways to defend against malware? (Choose two.)

  • Implement a VPN.
  • Implement network firewalls.
  • Implement RAID.
  • Implement strong passwords.
  • Update the operating system and other application software.
  • Install and update antivirus software.
A
  • Update the operating system and other application software.
  • Install and update antivirus software.
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17
Q

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

A

Trojan horse

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18
Q

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

frame check sequence field

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19
Q

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

A

255.255.255.248

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20
Q

What service is provided by POP3?

  • Retrieves email from the server by downloading the email to the local mail application of the client.
  • An application that allows real-time chatting among remote users.
  • Allows remote access to network devices and servers.
  • Uses encryption to provide secure remote access to network devices and servers.
A

Retrieves email from the server by downloading the email to the local mail application of the client.

21
Q

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

A

virtual private networks
intrusion prevention systems

22
Q

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
A

applications that protect end devices from becoming infected with malicious software

22
Q

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.
  • It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.
A

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.

23
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 SMTP TFTP
TFTP
23
SKIPPED
N/A
24
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 DNS on the router. Generate two-way pre-shared keys. Configure the IP domain name on the router. Generate the SSH keys. Enable inbound vty SSH sessions. Enable inbound vty Telnet sessions.
Configure the IP domain name on the router. Generate the SSH keys. Enable inbound vty SSH sessions.
24
What are the three parts of an IPv6 global unicast address? (Choose three.) subnet ID subnet mask broadcast address global routing prefix interface ID
subnet ID global routing prefix interface ID
25
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
all IPv6 configured routers on the local link
26
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.) extensive cabling mobility options packet collision interference security coverage area
interference security coverage area
26
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.
Exit privileged EXEC mode and press Enter.
27
What method is used to manage contention-based access on a wireless network? token passing CSMA/CA priority ordering CSMA/CD
CSMA/CA
28
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
to request that a source decrease the rate at which it transmits data
28
Which switching method drops frames that fail the FCS check? store-and-forward switching borderless switching ingress port buffering cut-through switching
store-and-forward switching
28
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
software that is installed on a user device and collects information about the user
28
What is a function of the data link layer? - provides the formatting of data - provides end-to-end delivery of data between hosts - provides delivery of data between two applications - provides for the exchange of frames over a common local media
provides for the exchange of frames over a common local media
28
Which range of link-local addresses can be assigned to an IPv6-enabled interface? FEC0::/10 FDEE::/7 FE80::/10 FF00::/8
FE80::/10
29
Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.) - NAT adds authentication capability to IPv4. - NAT introduces problems for some applications that require end-to-end connectivity. - NAT will impact negatively on switch performance. - NAT provides a solution to slow down the IPv4 address depletion. - NAT improves packet handling. - NAT causes routing tables to include more information.
- NAT introduces problems for some applications that require end-to-end connectivity. - NAT provides a solution to slow down the IPv4 address depletion.
29
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.
Allows for data transfers between a client and a file server.
29
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
DNS server default gateway
30
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
1E6F:65FF:FEC2:BDF8
30
SKIPPED
N/A
31
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.
Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network
31
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
software that is installed on a user device and collects information about the user
32
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
store-and-forward
32
SKIPPED
N/A
32
SKIPPED
N/A
33
What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.) error detection frame delimiting accessing the media data encapsulation logical addressing
accessing the media data encapsulation
34
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
2001:DA48:FC5:A4::/64
34
SKIPPED
N/A

TINFO250 (6 decks)

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