COMPTIA Server+ SK0-004: Networking and Disaster Recovery Exercises, Exams of Nursing

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COMPTIA SERVER+ SK0-004: NETWORKING AND DISASTER

RECOVERY

What are the best practices for media storage and restore operations? - Answer Label backup media with Physical and electronic labels. Verify that the source data is the same as the destination data. Test whether you can restore data from the back-up media. Apply strategies for tape rotation and retention. What are some best practices for managing cables? - Answer Cables should be labelled to identify their purpose. To avoid damage, the cable bend radius should not be exceeded. Cables should be grouped with cable ties for better airflow. what range do registered ports fall into? - Answer 1,024 to 49, Which statements describe a default gateway? - Answer It is a type of network device it's used to send data off the network

It can be viewed with the ipconfig utility Which statements describe the Media Access Control (MAC) address? - Answer It's a layer 2 address It is the first half of the manufacture ID It can be viewed using the ipconfig command It is represented as a 12-character hexadecimal address Which statements are true about public and private IP addressing? - Answer Public IP address is an IP address that is rout-able on the internet Any system that uses a private IP address cannot send its packets out to the internet Private IP addresses are provided for internal communication within a organization's network what are the considerations for using a Network Interface Card (NIC)? - Answer By default, most network cards detect the duplex state of the system they connect to. Some NICs support multiple speed settings.

The full duplex setting allows information to be sent and received at the same time. NIC teaming provides performance and redundancy benefits. Which statements are true about backup media? - Answer It takes more time to backup to tape than to disc or optical media. Optical media are commonly used to archive data that isn't going to be used on a regular basis. A common scenario is to backup a server to a disk , and backup it up to tape in the background. Match the three main NetBIOS services to their descriptions. - Answer NetBIOS datagram distribution service - Does not guarantee data delivery

• Sends data to a remote system NetBIOS session service - Guarantees data delivery
• Sends data to a remote system NetBIOS name service - Registers and resolves computer names

Which statements are true about disaster recovery replication methods? - Answer Asynchronous replication offers better performance than synchronous replication. Asynchronous replication requires that a change is written to one location before it is sent to the other location. Synchronous replication requires that a change is written in both places before the change is considered successful. Data can be replicated to another disk, server, or site. what are the characteristics of the TCP and UDP network services? - Answer TCP operates at the transport layer of the TCP/IP protocol stack. UDP is a connectionless protocol. TCP requires an acknowledgment for every packet that is sent. TCP is a connection-oriented protocol. UDP is faster than TCP. Which statements describes how network address translation (NAT) and port address translation (PAT) work? - Answer PAT maintains separate

entries for each session by recording the source and destination ports of the sessions. NAT is used to translate private IP addresses to the public IP addresses. PAT is an extension to NAT that permits multiple devices on a network to be mapped to a single public IP address. NAT is a router-based service that allows a router to change the IP addresses of the packets that they send. Which statement is true about copper cables? - Answer CAT5 is used in a 100-megabit Ethernet or Fast Ethernet environments. CAT6 is used in 10-gigabit Ethernet environments. A rollover cable is used to connect to the console port on a Cisco device. CAT5 is used in gigabit Ethernet networks. Match the types of backups to their descriptions. - Answer Bare metal backup - The operating system, its applications, and data are backed up. Differential backup - Files that have changed since the last backup are backed up, and the archive bit is not cleared.

Copy backup - Then selected files are backed up, and the archive bit is not cleared. Snapshot backup - -A read-only copy of the data for a certain point in time is created. Incremental backup - Files that have changed since the last backup are backed up, and the archive bit is cleared. Full backup - The selected files are backed up, and the archive bit is cleared Which statements describe how Dynamic Host Configuration Protocol (DHCP) and static assignment work? - Answer When a system powers on, it broadcasts on the network looking fore a DHCP server. DHCP is used to automatically assign IP addresses to all the systems on a network. A DHCP server must be configured with an IP address scope and lease period. It is time consuming to statically assign IP addresses to all the systems on a network.

Which statements describe the characteristics of fiber-optic cabling? - Answer Multiple rays of light travel through the glass core of multi- mode fiber-optic cabling. Single mode fiber-optic cabling has a glass core of approximately 9 microns. A single ray of light travels through the glass core of a single mode fiber-optic cabling. Which statements describe a disaster recovery plan? - Answer It's typically technology driven. It's typically a step-by-step guide on how to recover from failures. It forms part of the business continuity plan. Match the well-known ports to their protocols. - Answer TCP 20 and 21

• FTP TCP 23 - Telnet TCP 443 - HTTPS UDP 67 and 68 - DHCP TCP 80 HTTP UDP 161 - SNMP

Which statements are true about cable management? - Answer Cables can be routed through cable channels. Cables should be managed in the office environment. Cables should be managed in the server room. Cables can be routed through cable management trays. What is the purpose of the Domain Name System (DNS). - Answer To translate fully qualified domain names to IP addresses. Match the IPv4 address classes to their characteristics. Each class is used more than once. - Answer Class A - it provides over 16 million addresses.

• The value of the first octet ranges from 1 to 127 Class B - It provides 65,536 addresses
• the value of the first octet ranges from 128 to 191 Class C - It provides 254 addresses.
• the value of the first octet ranges from 192 to 224 Match the addressing schemes to their characteristics. Each scheme is used more than once. - Answer IPv4 - 23-bit address
• Made up of four parts separated by a decimal.
• Supports broadcast communication. IPv6 - 128-bit addresses.
• Supports uni-cast, multicast, and any-cast communication.
• Made up of 8 parts in a hexadecimal notation.

What do you need to take into consideration when choosing a location for backup media? - Answer Backup media should be encrypted to protect sensitive data. You need to be able to control the environment's humidity and temperature. Media needs to be stored in a secure location with controlled access. Onsite storage risks, losing the backup media if a disaster occurs at a site. Offsite storage can be very expensive and inconvenient. Match the network cable connectors to their descriptions. - Answer Lucent Connector (LC) -It is a snap-in-place connector that's very compact and offers high-density connections Straight tip (ST) connector - It has a bayonet type of fitting and is typically found with single mode fiber-optic connections RJ-11 connector - It is a twisted pair cabling connector that connects to the telephone system.

Subscriber Connector (SC) - It is a snap-in-place connector that's less compact than the other snap-in-place connectors. Small Form-factor Pluggable (SFP) connector - It supports transfer rates of up to 4 gigabits per second. RJ-45 - IT is a twisted pair cabling connector that connects to the Ethernet networks Which statements describe how the Windows Internet Naming Service (WINS) is used? - Answer A NetBIOS name is typically resolves through a network broadcast. The WINS service hosts a database of computer names and corresponding IP addresses. WINS translates NetBIOS names to the IP addresses. Match the types of disaster recovery sites to their descriptions. Some sites are used more than once. - Answer Hot site - Costs the most amount of money.

• Includes a facility, equipment, and recent data Warm site - Includes a facility and equipment , but not recent data.

Cold site - Includes a facility, but not computers or telephones.

• Costs the least amount of money. What type of information is included in a business continuity plan? - Answer Replacement of personnel for key positions. Alternative sites and their functionality. Threats to business, such as crime and natural disasters. Ways to reduce threat risk and recover from threats. Critical business tasks and how to ensure their continuation. Which statements describe a business impact analysis? - Answer It identifies critical tasks for business continuity. It's an early step in creating noncritical tasks for business continuity. It identifies the severity of the impact of functions being unavailable. It specifies the recovery point objective and recovery time objective.