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WorksheetsPart 1
Total questions: 20
Worksheet time: 20mins
What is one main characteristic of the data link layer?
It generates the electrical or optical signals that represent the 1 and 0 on the media.
It converts a stream of data bits into a predefined code.
It shields the upper layer protocol from being aware of the physical medium to be used in the communication.
It accepts Layer 3 packets and decides the path by which to forward the packet to a remote network.
Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.64/26
192.168.1.32/27
192.168.1.32/28
192.168.1.64/29
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
nslookup
ping
ipconfig
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 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
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.
What are the three parts of an IPv6 global unicast address? (Choose three.)
subnet ID
subnet mask
broadcast address
global routing prefix
interface ID
Refer to the exhibit. Which two network addresses can be assigned to the network containing 10 hosts? Your answers should waste the fewest addresses, not reuse addresses that are already assigned, and stay within the 10.18.10.0/24 range of addresses. (Choose two.)
10.18.10.200/28
10.18.10.208/28
10.18.10.240/27
10.18.10.200/27
10.18.10.224/28
What technique is used with UTP cable to help protect against signal interference from crosstalk?
wrapping a foil shield around the wire pairs
twisting the wires together into pairs
terminating the cable with special grounded connectors
encasing the cables within a flexible plastic sheath
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.
A client packet is received by a server. The packet has a destination port number of 110. What service is the client requesting?
DNS
DHCP
SMTP
POP3
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 is a benefit of using cloud computing in networking?
Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more ‘smart’ or automated.
Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.
End users have the freedom to use personal tools to access information and communicate across a business network.
Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables.
A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting?
FTP
LDAP
SLP
SNMP
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.
What service is provided by SMTP?
Allows clients to send email to a mail server and the servers to send email to other servers.
Allows remote access to network devices and servers.
Uses encryption to provide secure remote access to network devices and servers.
An application that allows real-time chatting among remote users.
Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments?
Bluetooth
Zigbee
WiMAX
Wi-Fi
An organization is assigned an IPv6 address block of 2001:db8:0:ca00::/56. How many subnets can be created without using bits in the interface ID space?
256
512
1024
4096
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.
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.
