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Debesys
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Questions
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Answers
1
What is IP address size?
64 Bytes
4 Bytes
255 bits
16 bits
2
Which of the services models typically requires the highest level of technical literacy from the client?
laaS
SaaS
All of the choices are equivalent in regards of the knowledge needed.
PaaS
3
Which network topology is the most resistant to physical cable failure:
Mesh
Star
Bus
Ring
4
A _ protects an organization's network from outside attack
Fortress
Extranet
Firewall
Proxy
5
When data is encapsulated, which is the correct order?
Segment, data, packet, frame
Data, segment, frame, packet
Data, frame, packet, segment
Data, segment, packet, frame
6
Which of the following fields are NOT a part of IPv4 header?
Time to live
Port number
Header checksum
Source address
7
In MapReduce the number of maps is usually driven by the size of
Computational complexity
Tasks
Inputs
Outputs
8
What is the main reason for introducing IPv6?
The need for faster transfer speeds
To ensure security of internet traffic
The need for more IP addresses
To increase the reliability of the internet
9
According to OSI model ARP resides on which layer?
Transport layer
Data Link layer
Session layer
Application layer
10
How many copper wires are inside a twisted pair Ethernet cable?
1
8
4
2
11
What is the typical order in which DNS servers are queried?
Local, Authoritative, Top Level Domain, Root
Local, Root, Top Level Domain, Authoritative
Authoritative, Local, Root, Top Level Domain
Root, Local, Authoritative, Top Level Domain
12
If a Kafka Broker goes down, what ensures the data is not lost?
Data is saved in external databases
Data is backed up in cloud storage
Data is replicated across multiple brokers in the cluster
Kafka uses failover servers
13
Which protocol allows to dynamically assign IP addresses to devices on the network?
ARP
DHCP
RIP
DNS
14
How many layers are there in OSI (Open Systems Interconnection) model?
4
8
5
7
15
Which of the following is not a type of a client in cloud architecture model?
Mobile client
Stationary client
Thin client
Thick client
16
How many hexadecimal digits are in a MAC address?
12
2
16
8
17
Docker platform was originally designed to run on which operating system?
Docker is OS agnostic
Linux
Windows
FreeBSD
18
Which of the following ensures message order in Kafka?
Consumer
Broker
Partition
Replica
19
Which layer of the internet protocol suite is responsible for code formatting and conversion and graphic standards
Internet layer
Application layer
Transport layer
Link layer
20
Which of the following options is not a SaaS service
Google Sites
IBM Bluemix
Office 365
Dropbox
21
What are the three main network topologies?
Mesh/Star/Square
Bus/Square/Star
Bus / Mesh / Star
Bus/Oval / Star
22
A distributed network configuration in which all data/ information pass through a central computer is
Star network
Point to point network
Bus network
Ring network
23
If the IP address of a website is known it is possible to reach it without which protocol?
DNS
RIP
HTTP
IP
24
Docker software runs natively on which operating system?
Windows
Docker is OS agnostic
MacOS
Linux
25
In which software distribution model a cloud provider manages and hosts an app that users access
DaaS
laaS
PaaS
SaaS
26
Which of the fields in IPv4 header are responsible for packet fragmentation?
Identification
Fragment offset
Flags
All of the listed fields
27
Which programming model is the basis of Apache Hadoop software?
MapReduce
Grand Central Dispatch
POSIX Threads
Spurious wakeup
28
A repository of data from disparate sources that is stored in its original, raw format is called...
Data Mesh
Data Warehouse
Data Lake
Database
29
What is a public cloud?
A multi-tenant cloud environment accessed over the internet
A cloud service that can only be accessed from a publicly shared computer
A cloud formation that can be accessed by anyone
A cloud environment owned, operated and controlled by a public company
30
RIP uses which metric to choose a path of a packet?
Time it will take for the packet to reach the destination
Hop count
The cost of sending the packet
Channel capacity
31
Serverless computing is often chosen for which advantage?
It does not require servers to run.
Little to no vendor lock-in.
Low startup time.
It is highly elastic by nature.
32
Which concept is not part of VXLAN protocol?
VXNET
VTEP
Overlay network
Underlay network
33
Maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.0 subnet mask?
254
255
256
0
34
Ethernet frame contains
Destination IP address
None of the above
Port number
Source MAC address
35
In MapReduce which of the following maps input key/value pairs to a set of intermediate key/value pairs?
Merge
Reducer
Sort
Mapper
36
Which protocol is used to achieve reliable data transmission?
RIP
IPv6
UDP
TCP
37
Which device would NOT be typically used to expand LAN to include more computers?
Switch
Wireless Access point
Firewall
Hub
38
Which of the following is private IP address?
168.172.19.39
12.0.0.1
192.168.24.43
255.255.255.255
39
In a design, one computer or dedicated storage device acts as a central storage unit for the network
Bus topology
Client Server
Star topology
Peer to Peer
40
Kubernetes system is routinely used in conjunction with
Docker Swarm
Docker
Apache Hadoop
Apache Spark
41
Acknowledgements, sequencing, and flow control are characteristics of which protocol in Internet Protocol Suite?
IPv6
UDP
OSFP
TCP
42
What is a server in a computer network?
Powerful computer that provides a service such as centralised file storage
None of the other options are correct
Network media such as cables
A network administrator
43
Mathematical operations in checksum algorithm are performed in following order.
sum, compliment, wrap
sum, multiply by -1, wrap, compliment
wrap, compliment, sum, multiply by -1
sum, wrap, compliment
44
What does a computer network allow computers to share?
Internet connection
Hardware, Software and Internet connection
Software
Hardware
45
Which search algorithm does OSPF protocol employ?
Floyd-Warshall
Bellman-Ford
Dijkstra's
A* (A star)
46
What are Kafka partitions used for?
Data encryption
Data backup
Load balancing of data
Data segmentation in to logs of defined size
47
Which device is only displayed on physical topology map, but not on logical topology map of a network
Switch
Host
Hub
Router
48
A hypervisor is a _.
All options are incorrect
Virtual machine monitoring software
Software used to supervise cloud tenants
Hardware used to host cloud services
49
What physical medium is most commonly used to connect continents across oceans?
Microwaves
Coaxial cable
Fiber-optic cable
Twisted-pair wire
50
What is the maximum hop count supported by RIP?
255
15
16
Infinite
51
A cloud solution can never offer which advantage over an on-premise solution
Security
Reliability
Economic advantage
None of the other options are correct
52
ARP is typically used to bridge the gap between what two protocols?
Ethernet and IP
TCP and IP
IP and World Wide Web domain names
TCP and UDP
53
Which type of virtualization has highest performance overhead?
Hardware Virtualization
Desktop Virtualization
Paravirtualization
Containerization
54
What is the purpose of a Kafka broker?
To store data and serve client requests
To route messages to different networks
To consume messages
To produce messages
55
What is Apache Kafka primarily used for?
Machine Learning
Real-time messaging, streaming and processing
Databases
as MapReduce implementation
56
Demultiplexing of data between applications occurs on which layer of Internet Protocol Suite?
Transport
Internet
Application
Link
57
What is a hybrid cloud?
A blend of private cloud and legacy on-premises hardware
A cloud service deployed across multiple offices or locations
A blend of public and private cloud services with orchestration between
None of the options are correct
58
Which optical phenomenon is used in optic-fibre cables?
Fluorescence
Rayleigh Scattering
Light Interference
Total internal reflection
59
For very large networks, _ topology is used
Ring
Star
Mesh
Bus
60
Which of the following sentences describes Ethernet most accurately?
Ethernet is used to connect multiple networks together.
None of the sentences above can be used to describe Ethernet.
Ethernet is used in local networks to connect multiple devices.
Ethernet is used to establish point-to-point connection between two devices
61
Multitenancy in context of cloud computing offers which advantage?
Allows to cut costs
Decreases software complexity and development costs
Increases security and stability of services
All of the statements are true
62
What ensures data availability in case a Kafka broker fails?
Snapshots
Replicas
Backups
Segments
63
Which search algorithm does RIP employs?
Floyd-Warshall
A* (A star)
Bellman-Ford
Dijkstra's
64
In TCP protocol how many segments are needed to gracefully end the connection?
0
4
2
1
65
What are Load Balancers?
Networking device that forwards data between computer networks.
Software which redirects web traffic and obfuscates its source.
Hardware, software that distributes traffic to servers in the resource pool
Hardware which limits connectivity to a resource to protect it.
66
What is the subnet address for 172.16.112.1/24?
172.16.112.255
172.16.112.0
172.16.96.0
172.16.0.0
67
Which functionality has been added in IPv6 that doesn't exist in IPv4?
Packet fragmentation
Port forwarding
Type of service selection
Protection from packet reordering through flow labelling
68
What is the primary role of Zookeeper in a Kafka cluster?
Compressing data for faster transmission.
Storing actual message data
Balancing load between Kafka brokers.
Managing topic and partition metadata.
69
Which are types of network communications media?
Network Interface Card
Ethernet Cables / Fibre Optic Cables
Hub/Switch / Router
All options are wrong
70
What protocol can be used to find the hardware address of a local device?
Ethernet
ARP
RIP
MAC
