WorksheetsSuper Session ICT169
Total questions: 39
Worksheet time: 54mins
The DNS protocol is
used to resolve an IP address when the host name is known
used for mapping IP addresses to MAC addresses
used for translating between IPv4 and IPv6
used to resolve the network default gateway when the IP address is known
What best describes a peering relationship between two Internet Service Providers (ISPs)
ISP A and ISP B.
ISP A and ISP B exchange each others traffic freely without any payments involved.
ISP A pays ISP B for the transport of data, but ISP B does not pay ISP A for the transport of data.
ISP A and ISP B run a peer-to-peer file exchange protocol between them.
ISP B pays ISP A for the transport of data, but ISP A does not pay ISP B for the transport of data.
In Australia 802.11b/g Wi-Fi uses 11 different channels. If you're setting up three different WLANs in close proximity (no other existing WLANs in the area), which are the three channels you should choose to minimise the interference between the three WLANs?
1, 6 and 11.
9, 10 and 11.
7,9 and 11.
1, 2 and 3.
1, 4 and 6.
How many Megabytes can be transferred per second by a 1 Gigabits/s link?
Which of the following statements describes the characteristics of a link-state routing protocol?
(Choose two.)
routers build a map of the entire network
routers must be manually configured with routing information
updates occur when the topology changes
routers exchange entire routing tables with neighbours
updates occur periodically
You have been provided with the 132.145.0.0/24 address space. You have a very simple network. You have one point-to-point link (2 hosts) and one internal subnet with 37 hosts. Subnet accordingly. (YOU HAVE 3 MINS)
What is the network address of the internal subnet (do not include subnet mask) (a)
What is the subnet mask of the internal subnet in dotted decimal format (b)
What is the subnet mask of the internal subnet in slash format (c)
What is the network address of the point-to-point link (do not include subnet mask) (d)
What is the subnet mask of the point-to-point link in dotted decimal format (e)
Which hosts will receive an ARP request?
Only the host to which the request is addressed.
All hosts in the collision domain.
All hosts connected to the LAN.
All hosts in the broadcast domain.
Match the following descriptions with types of malicious software
Rootkit (a)
Worm (b)
Virus (c)
Map the following technologies to OSI layers.
IP
Network Layer
UDP
Transport Layer
DNS
Application Layer
WiFi IEEE 802.11
Answer 4
Physical and Data Link Layer
You are designing a network that needs to support 384 users.
Which subnet mask would best meet your needs? (Only use dotted decimal notation)
(a)
Which of the following options is a valid IPv6 address?
2001:0DB8::ABCD::1234
2001:DB8:0:1111::200
2001::ABCD::
ABCD:160D::4GAB:FFAB
Based on the network topology, which logical and physical destination addresses should be used to transmit a packet from PC1 to PC3?
MAC address (a)
IP address (b)
What routes will appear in the routing table of a newly provisioned router?
Default routes.
The routing table will be empty.
Direct connections.
Broadcast routes.
Which of the following commands would correctly configure a static IPv4 route?
(Choose two.)
ip route 10.1.3.0 /24 S0
ip route 10.1.3.0 /24 10.1.1.1
ip route 10.1.3.0 S0
ip route 10.1.3.0 255.255.255.0 10.1.1.1
ip route 10.1.3.0 255.255.255.0 S0
Which of the following statements describes an advantage to implementing VLANs on switched networks?
VLANs improve network security by isolating hosts that have access to sensitive
data.
VLANs improve network performance by regulating ow control and window size.
VLANs reduce network cost by reducing the number of physical ports required on switches.
VLANs enable switches to route packets to remote networks.
Which two layers of the OSI model are combined to form the network access layer of the TCP/IP model? (Choose two.)
Data Link
Physical
Network
Transport
Application
Which of these statements regarding coaxial cabling is true?
(Choose two.)
Only capable of transmitting data at half-duplex.
Used by cable TV providers to connect to the customer's modem
Consists of eight wires, with each pair twisted to prevent interference.
Capable of transmitting data at full-duplex.
Transmits data using pulses of light.
Which of the following functions is performed by both TCP and UDP?
Error recovery
Routing
Multiplexing using port numbers
Windowing
What is the motivation behind using private IP addressing on internal networks?
To make connecting to the Internet easier.
To reduce the ongoing costs of operating an internal network.
To conserve public IP addresses to avoid depletion.
To manage the growth of the internal network.
The status lights for the ports used to connect R1 and PC to
SW1 are not illuminated.
Which of the following steps should be taken to troubleshoot this physical layer problem?
(Choose two.)
Switch cable A to a crossover cable.
Ensure the switch has power.
Replace cables A and B.
Switch cable B to a crossover cable.
Reboot PC, SW1, and R1.
For each of the following devices, define whether the device will extend or limit the size of a collision domain.
Switch (a)
Router (b)
Hub (c)
How many networks/subnets are required to address this topology?
4
6
5
7
3
What is the purpose of the OSI physical layer?
Which statement correctly describes frame encoding?
It converts bits into a predefined code in order to provide a predictable patter to help distinguish data bits from control bits
It uses the characteristics of one wave to modify another wave
It generates the electrical, optical, or wireless signals the represent binary numbers of the frame
What type of physical topology can be created by connecting all Ethernet cables to a central device?
mesh
star
ring
bus
What are the two sublayers of the OSI model data link layer?
(Choose two.)
LLC
MAC
Network access
Physical
Internet
Which two functions or operations are performed by the MAC sublayer?
(Choose two.)
It is responsible for Media Access Control
It performs the function of the NIC driver software
It handles communication between upper and lower layers
It adds a header and trailer to form a OSI layer 2 PDU
It adds control information to network protocol layer data
Which field in an IPv4 packet header will typically stay the same during its transmission?
Packet length
time to live
flag
destination address
When a router receives a packet, what information must be examined in order for the packet to be forwarded to a remote destination?
source IP address
source MAC address
destination IP address
destination MAC address
What is the purpose of ARP in an IPv4 network?
To forward data onwards based on the destination MAC address
To obtain a specific MAC address address when an IP address is known
What is a responsibility of transport layer protocols?
Encrypt data for insecure transmission
Determine the best path to forward a a packet
Tracking individual conversations
Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices?
Which statement is true about FTP?
FTP is a standard type of email protocol.
FTP is a highly secure protocol for file transfer.
The client can download or upload data to the server
Which protocol can be used to transfer messages from an email server to an email client?
What happens to a port that is associated with VLAN 10 when the administrator deletes VLAN 10 from the switch?
How is traffic routed between multiple VLANs on a multilayer switch?
Traffic is routed via internal VLAN interfaces
Traffic is routed via sub interfaces
Which is a DHCPv4 address allocation method that assigns IPv4 addresses for a limited lease period?
Which IEEE standard operates at wireless frequencies in both the 5 GHz and 2.4 GHz ranges?
802.11n
802.11a
802.11g
802.11b
Why would a floating static route be configured with an administrative distance that is higher than the administrative distance of a dynamic routing protocol that is running on the same router?
