20+ Dialogic Solutions Interview Questions and Answers

To access others' computers on our PC within a single network, we can use remote desktop tools like Remote Desktop Protocol (RDP) or Virtual Network Computing (VNC).

• Remote Desktop Protocol (RDP) allows accessing Windows-based computers remotely.

• Virtual Network Computing (VNC) enables remote access to computers running various operating systems.

• Both RDP and VNC require the target computer to have the necessary software and permissions set up.

• Other tools like TeamViewer, AnyDes...read more

The latest router and switch used in the market are Cisco Catalyst 9000 Series switches and Cisco ASR 9000 Series routers.

• Cisco Catalyst 9000 Series switches are known for their advanced security features and programmability.

• They offer high performance and scalability for enterprise networks.

• Cisco ASR 9000 Series routers provide high-density, high-performance routing and are suitable for service provider networks.

• They support advanced features like segment routing and network...read more

The difference between color coding of 568A and 568B is the arrangement of the wire pairs in the Ethernet cable.

• 568A uses a different order for the green and orange wire pairs compared to 568B.

• 568A: white-green, green, white-orange, blue, white-blue, orange, white-brown, brown

• 568B: white-orange, orange, white-green, blue, white-blue, green, white-brown, brown

• Both standards are used for Ethernet connections, but 568B is more commonly used in the United States.

• The color coding ...read more

Configuring routers and switches involves setting up network protocols, IP addresses, VLANs, and security features.

• Access the router/switch CLI through console or SSH.

• Configure basic settings like hostname, domain name, and passwords.

• Set up IP addresses and subnet masks on interfaces.

• Enable routing protocols like OSPF or BGP for routers.

• Create VLANs and assign ports to them on switches.

• Implement security features like access control lists (ACLs) or port security.

• Test connecti...read more

Straight cables are used to connect different types of devices, while cross cables are used to connect similar devices.

• Straight cables are used to connect a computer to a switch, router, or hub.

• Cross cables are used to connect two computers directly or to connect two switches or hubs together.

• Straight cables have the same wiring sequence on both ends, while cross cables have a different wiring sequence on each end.

• Straight cables use the T568A or T568B wiring standard, while ...read more

Topology refers to the arrangement of nodes and connections in a network. Types include bus, star, ring, mesh, and hybrid.

• Topology defines the physical or logical layout of a network.

• Bus topology connects all devices to a single cable.

• Star topology connects devices to a central hub or switch.

• Ring topology connects devices in a circular loop.

• Mesh topology connects devices with multiple redundant paths.

• Hybrid topology combines two or more types of topologies.

• Examples: Ethernet ...read more

DHCP stands for Dynamic Host Configuration Protocol. It is a network protocol that enables devices to obtain IP addresses automatically.

• DHCP is used to assign IP addresses to devices on a network.

• The DHCP process involves four steps: discovery, offer, request, and acknowledgement.

• During the discovery phase, a device sends a broadcast message to find a DHCP server.

• The DHCP server responds with an offer, providing an available IP address.

• The device then sends a request to the D...read more

NAT/PAT stands for Network Address Translation/Port Address Translation. It is used to translate private IP addresses to public IP addresses and vice versa.

• NAT/PAT is used to conserve public IP addresses by allowing multiple devices to share a single public IP address.

• It provides security by hiding the internal IP addresses of a network from the external network.

• NAT translates the private IP addresses of devices in a local network to a public IP address when communicating wit...read more

IP stands for Internet Protocol. It is a set of rules that governs the format of data sent over the internet.

• IP is responsible for routing data packets between devices on a network.

• There are two versions of IP: IPv4 and IPv6.

• IPv4 uses 32-bit addresses and can support up to 4.3 billion unique addresses.

• IPv6 uses 128-bit addresses and can support an almost infinite number of unique addresses.

• IP is a layer 3 protocol in the OSI model.

• IP addresses can be static or dynamic, and ca...read more

DNS stands for Domain Name System. It is a decentralized system that translates domain names into IP addresses.

• DNS is used to resolve domain names to IP addresses.

• It works by querying DNS servers to find the IP address associated with a domain name.

• The DNS process involves recursive and iterative queries.

• DNS caching is used to improve performance and reduce network traffic.

• DNS records like A, CNAME, MX, etc., store information about a domain.

• DNSSEC provides security by digita...read more

Data link layer is responsible for transferring data between adjacent network nodes and detecting errors in transmission.

• Data link layer is the second layer of the OSI model.

• It provides a reliable link between two devices over a physical layer.

• It is responsible for framing, error detection and correction, flow control, and access control.

• Examples of data link layer protocols include Ethernet, Wi-Fi, and PPP.

• Data link layer devices include switches and bridges.

A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

• Firewalls can be hardware or software-based

• They can be used to block unauthorized access to a network or specific devices

• Firewalls can also be used to restrict access to certain websites or applications

• Examples of popular firewall software include Norton, McAfee, and Windows Firewall

• Firewalls are an important component of network secur...read more

To share a printer in a network, you need to set up printer sharing and configure the necessary settings.

• Connect the printer to a computer that will act as the print server

• Enable printer sharing on the computer

• Configure the printer settings on the print server

• Add the shared printer to other computers on the network

• Test the printer to ensure it is working properly

RIP, OSPF, EIGRP, and BGP are all routing protocols used in networking.

• RIP is a distance-vector protocol that uses hop count as its metric.

• OSPF is a link-state protocol that uses cost as its metric.

• EIGRP is a hybrid protocol that uses both distance-vector and link-state characteristics.

• BGP is an exterior gateway protocol used for routing between different autonomous systems.

• RIP and OSPF are used within a single autonomous system, while EIGRP and BGP are used between different...read more

Routers connect different networks, switches connect devices within a network, and hubs connect devices to a network.

• Routers operate at the network layer and use IP addresses to forward packets between networks.

• Switches operate at the data link layer and use MAC addresses to forward frames within a network.

• Hubs operate at the physical layer and simply broadcast data to all connected devices.

• Routers can provide security by blocking unwanted traffic, while switches and hubs can...read more

VLAN stands for Virtual Local Area Network. It is used to logically segment a network into smaller broadcast domains.

• VLANs are created by configuring network switches.

• Devices in the same VLAN can communicate with each other as if they are on the same physical network.

• VLANs can improve network performance and security by reducing broadcast traffic and isolating network traffic.

• VLANs can be used to group devices by department, function, or security level.

• VLANs can span multiple...read more

Network architecture refers to the design and layout of a computer network.

• It includes the physical components of the network such as routers, switches, and cables.

• It also includes the logical components such as protocols and network topologies.

• The architecture should be designed to meet the needs of the organization and provide efficient and secure communication.

• Examples of network architectures include client-server, peer-to-peer, and cloud-based.

• Network architecture can be...read more

SSH is a secure protocol for remote access while Telnet is an unsecured protocol.

• SSH encrypts data while Telnet sends data in plain text.

• SSH uses public-key cryptography while Telnet uses username and password authentication.

• SSH is more secure and recommended over Telnet.

• SSH uses port 22 while Telnet uses port 23.

• SSH is used for remote access to servers while Telnet is mostly used for testing network connectivity.

Configuring Outlook involves setting up email accounts, server settings, and security options.

• Open Outlook and click on File

• Click on Add Account and enter your email address

• Enter your password and follow the prompts to complete setup

• Configure server settings such as incoming and outgoing mail servers

• Set up security options such as encryption and authentication

• Test the account to ensure it is working properly

Routing protocols are sets of rules that determine how routers communicate with each other to forward data packets across networks.

• Routing protocols are used to exchange routing information between routers.

• They help routers to build and maintain routing tables.

• There are two types of routing protocols: interior gateway protocols (IGPs) and exterior gateway protocols (EGPs).

• Examples of IGPs include OSPF and EIGRP, while BGP is an example of an EGP.

An operating system (OS) is a software that manages computer hardware and software resources and provides common services for computer programs.

• OS acts as an interface between the user and the computer hardware.

• It manages the computer's memory and processes.

• Examples of OS include Windows, macOS, Linux, Android, and iOS.

RAID stands for Redundant Array of Independent Disks. It is a data storage technology that combines multiple physical disk drives into a single logical unit.

• RAID provides improved performance, fault tolerance, and data protection.

• There are different RAID levels, each with its own advantages and disadvantages.

• RAID 0 offers improved performance but no redundancy, while RAID 1 provides redundancy but no performance improvement.

• RAID 5 and RAID 6 offer both performance improvement...read more

WDS is a Windows Deployment Services used for network-based installation of Windows OS. MDT is a Microsoft Deployment Toolkit used for customizing and automating Windows OS deployment.

• WDS is used for network-based installation of Windows OS

• MDT is used for customizing and automating Windows OS deployment

• WDS is a component of Windows Server

• MDT is a standalone tool that can be used with WDS or other deployment tools

OST and PST are file extensions used by Microsoft Outlook to store email data.

• OST stands for Offline Storage Table and is used for storing email data when Outlook is in offline mode.

• PST stands for Personal Storage Table and is used for storing email data on the user's computer.

• OST files are created automatically when Outlook is configured to use Cached Exchange Mode.

• PST files can be created manually by the user to store email data locally.

• Both OST and PST files can be importe...read more

HDD is a traditional spinning hard drive, while SSD is a newer, faster type of drive that uses flash memory.

• HDD uses spinning disks to read/write data, while SSD uses flash memory chips.

• SSD is faster and more reliable than HDD.

• SSD is more expensive than HDD.

• SSD consumes less power than HDD.

• SSD has no moving parts, making it less prone to physical damage.

• HDD has larger storage capacity than SSD.

• SSD is commonly used in laptops and tablets, while HDD is used in desktop computers...read more

Active Directory (AD) is a Microsoft service that manages network resources and user accounts.

• AD is used to authenticate and authorize users and computers in a Windows domain network.

• It stores information about users, groups, computers, and other network resources.

• AD enables administrators to manage network resources from a central location.

• It provides a hierarchical structure for organizing network resources.

• AD can be integrated with other Microsoft services like Exchange an...read more

OSI model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system.

• OSI stands for Open Systems Interconnection.

• It has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has a specific function and communicates with adjacent layers.

• Example: HTTP operates at the Application layer, while TCP operates at the Transport layer.

• The model helps ensure interoperabil...read more