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Advance Networking F
From midterms to finals
| Answer | |
|---|---|
| Access the console line to add | Switch(config)# line console 0 Access the console line to add |
| Lalagyan password yung pag enter pa lang | Switch(config-line)# password <> Switch(config-line)# login |
| Lalagyan ng encrypted password | Switch(config)# enable secret <> |
| Encrypt lahat ng password | Switch(config)# service password-encryption |
| Lalagyan ng motto of the day | Switch(config)# banner motd “” |
| Lalagyan ng name yung device | Switch(config)# hostname <> |
| Routers interface ay automatic shutdown by default | True |
| Routers interface ay hindi automatic shutdown by default | false |
| Switch interface ay hindi automatic shutdown by default | True |
| Switch interface ay automatic shutdown by default | false |
| Shortcut para sa mga interfaces | Switch(config)# int range fa0/1 - 21 |
| Off ang interfaces sa switches | Switch(config-if-range)#shutdown |
| Lalagyan notes sa bawat interface | Switch(config-if-range)#description <> |
| The steps in IP routing | Step 1: Assign IP Address sa bawat port ng Routers Step 2: Assign IP Address to End Devices and make sure to add a Gateway Address Step 3: Use IP route |
| Lalagyan ng ip bawat port | Router(config-if)# ip address <ip address> <subnet> Router(config-if)# no shut |
| Config ng route sa lahat ng ports | Router(config)# ip route <destination address> <subnet mask> <next hop> |
| Make sure na naka write memory para safe | Router# wr mem |
| under RIPv2 This accessesthe router as rip | Router(config)# router rip |
| use v2 | Router(config-router)# version 2 |
| under RIPv2 do not use classfull networks | Router(config-router)# no auto-summary |
| under ROPv2 No need to put network mask | Router(config-router)# network <ip address> |
| Under EIGRP access the router as a rip | Router(config)# router eigrp 1 |
| under EIGRP Do not use classful networks | Router(config-router)# no auto-summary |
| find the network within the EIGRP ip routing | Router(config-router)# network 10.0.0.0 |
| Under EIGRP Wild card mask = 255.255.255.255 minus ip address | Router(config-router)# network <ip address> <wildcard mask> |
| Steps in getting the vlan configuration for static | Step 1: Implement port-channel if needed (usually 2 switches between the networks) Step 2: Implement trunking for the port-channel Step 3: Assign each interface to a switchport and access VLAN |
| Checks the vlan configs | Switch# show vlan brief |
| Naming the VLANs | Switch(config)# vlan <> Switch(config-vlan) name <> |
| Sets up the port-channel | Switch(config)# interface port-channel 1 Switch(config-if)# range g0/1 – 2 Switch(config-if-range)# channel-group 1 mode on |
| Sets up the trunk under static vlan configurations | Switch(config)# int port-channel 1 Switch(config-if)# switchport mode trunk |
| Assigning the interface of vlan under static configurations | Switch(config-if)# switchport mode access Switch(config-if)# switchport access vlan <> |
| The first step on configuring a Router on a stick | Step 1: Assign VLANs on the Switch (switchport mode access, switchport access vlan) |
| After assigning the VLANs in the switch port on a router on the stick what is the next step? | Step 2: Switchport mode trunk the port that is connected to the Router |
| Once you trunked the ports that is connected to a router what is the next step to configure a Router on a stick | Step 3: Assign the End Devices an IP Address at make sure may default gateway sa port ng router |
| The final step on Router on a Stick after you assign the end devices an Ip add | Step 4: Configure bawat sub-interface, nag iincrement yung g0/0/0.2 tas yung ip don dapat gateway ng bawat VLAN |
| Enables the connected switch on a Router on a stick | Router(config-if)# no shut |
| Lalagyan ng VLAN access via encapsulation sa bawat sub-interfaces | Router(config)# int g0/0/0.2 Router(config-subif)# encapsulation dot1Q <vlan number> Router(config-subif)# ip address <ip address> <subnet mask> |
| Dunamic trunking protocol | Switch(config-if)# switchport mode dynamic <auto/desirable> |
| Steps in VLAN Trunking protocol | Step 1: Make all the switches interface as TRUNK Step 2: Assign each Switch kung sino ang client, domain, mode, password at version Step 3: Write Memory Step 4: Configure the VTP SERVER SWITCH the vlan and its name |
| Assigning sa lahat ng switch para makopya VLANs | Switch(config)# vtp mode <server/client> Switch(config)# vtp domain cisco.com Switch(config)# vtp password cisco Switch(config)# vtp version 2 Switch# wr mem |
| Check lang ng spanning tree sa interface | Switch# show spanning-tree int fa0/1 detail |
| Apply only sa port na may end device Pag may default, auto implement sa lahat ng ports | Switch(config-if)# spanning-tree portfast |
| Apply sa need ng guard | Switch(config-if)# spanning-tree bpduguard enable |
| Gagawing pvst | Switch(config)# spanning-tree mode pvst |
| Manipulate ng priority ID kung sino primary at secondary | Switch(config)# spanning-tree vlan 1 root primary Switch(config)# spanning-tree vlan 1 root secondary Switch(config)# spanning-tree vlan 1 priority <> |
| What type of network traffic requires QoS? | Video Conferencing |
| Which interface allows remote management of a Layer 2 switch | the switch virtual interface |
| What functions does pressing the Tab key have when entering a command in the IOS? | completes the remainder of a partially typed word in a command |
| Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network | Segments are sent from the transport layer to the internet layer |
| the layer 2 address of the device which sent the frame | Source |
| 5C:23:5A:24:2B:3D is the MAC Address format of: | LINUX and IOS |
| Frames that are larger than the maximum frame size (1518 bytes) | Giants |
| 5C-23-5A-24-2B-3D is the MAC Address format of: | Windows |
| This layer is closest to the end user. Interacts with software applications, for example your web browser (Brave, Firefox, Chrome, etc). | Layer 7 Application |
| Light enters at a single angle (mode) from a laser-based transmitter (ANSWER IN ALL CAPS) | Single Mode Fiber |
| ARP Reply is Unicast – sent only to one host ( the host that sent the request) | True |
| Preamble and SFD is usually considered part of the Ethernet header | False ( *Preamble and SFD is usually not considered part of the Ethernet* *header.)* |
| Are known as “ Next-Generation Firewalls” when they include more modern and advanced filtering capabilities (ANSWER IN ALL CAPS) | Firewall |
| Which name is assigned to the transport layer PDU? | segment |
| When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address? | subnet mask |
| What process involves placing one PDU inside of another PDU? | encapsulation |
| What layer is responsible for routing messages through an internetwork in the TCP/IP model? | internet |
| Which PDU format is used when bits are received from the network medium by the NIC of a host? | frame |
| Which method allows a computer to react accordingly when it requests data from a server and the server takes too long to respond? | response timeout |
| A web client is receiving a response for a web page from a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to decode the received transmission? | Ethernet, IP, TCP, HTTP |
| At which layer of the OSI model would a logical address be added during encapsulation? | network layer |
| What is a characteristic of multicast messages? | they are sent to a select group of host |
| Which statement is correct about network protocols? | They define how messages are exchanged between the source and the destination. |
| What is an advantage of network devices using open standard protocols? | A client host and a server running different operating systems can successfully exchange data. |
| Which device performs the function of determining the path that messages should take through internetworks? | router |
| Why would a Layer 2 switch need an IP address? | to enable the switch to be managed remotely |
| What term describes storing personal files on servers over the internet to provide access anywhere, anytime, and on any device? | cloud |
| What term describes a network where one computer can be both client and server? | peer to peer |
| What term describes a type of network used by people who work from home or from a small remote office? | SOHO network |
| What term describes a computing model where server software runs on dedicated computers? | client/server |
| What term describes a technology that allows devices to connect to the LAN using an electrical outlet? | powerline networking |
| What term describes a policy that allows network devices to manage the flow of data to give priority to voice and video? | quality of service |
| What term describes a private collection of LANs and WANs that belongs to an organization? | intranet |
| What term describes the ability to use personal devices across a business or campus network? | BYOD bring your own device |
| At which OSI layer is a destination port number added to a PDU during the encapsulation process? | transport layer |
| At which OSI layer is data added to a PDU during the encapsulation process? | application layer |
| At which OSI layer is a source IP address added to a PDU during the encapsulation process? | network layer |
| At which OSI layer is a source MAC address added to a PDU during the encapsulation process | data link layer |
| Indicate the total length of the packet (L3 header + L4 segment) | IPV4 Header TotalLength Field |
| a network engineer/admin manually configure routes on the router | Static Routing |
| Used for synchronization and to allow the receiving device to be prepared to received the rest of data in the frame. | Preamble and SFD |
| routers use dynamic routing protocol (ex. OSPF) to share routing information with each other automatically and build their routing tables | Dynamic Routing |
| Controls dialogues (sessions) between communicating hosts. Establishes, manages, and terminates connections between the local application (for example, your web browser) and the remote application (for example, YouTube). | Layer 5 Session |
| a device that provides functions or services for clients | Server |
| Dynamic MAC addresses are removed from the MAC address table after 5 min of inactivity. | True |
| Used to indicate the position of the fragment within the original | IPV4 Header Fragment offset Field |
| If the minimum payload(packet) is less than 46 bytes, padding bytes are added. | true |
| sent to inform the requesting device of the MAC address | arp reply |
| SFD has a length of 1 byte (8-bit) | true |
| ARP Request is broadcast – sent to all host on the network. | true |
| Identifies the length of the header in 4 –byte increments | IPV4 Header Internet Header Length |
| used to identify which packet the frame fragment belongs to | IPV4 Header Identification Field |
| Translate between application and network formats. For example, encryption of data as it is sent, and decryption of data as it is received. | Layer 6 Presentation |
| software applications that filter traffic entering and exiting a host machine, like a PC | Host-based firewalls |
| Provides end-to-end (between two points) notification of networks congestion without dropping packets. | IPV4 Header ECN Field |
| a digital telecommunications network that allows nodes to share resources | Computer Network |
| are configured on switches on per-interface basis | VLAN |
| Used for QoS (Quality of Service) | IPV4 Header DDCSP FIeld |
| store routes to all of their known destination in a routing table, | Routers |
| Have fewer network interfaces than switches | Routers |
| The size of the Ethernet header and trailer is 6+6+2+4 = 18 bytes. | True |
| Used to control/identify fragments | IPV4 Header Flag Field |
| The native VLAN is VLAN 1 by default on all trunk ports and can be manually configures on each trunk port. | True |
| switchports which carry multiple VLANs | Trunk Port |
| Are therefore used to send data over the Internet | Routers |
| Conceptual model and set of communications protocols used on the Internet and other networks. | TCP/IP |
| hardware devices that filter traffic between networks | Network Firewalls |
| is a collection of network protocols/standards | ethernet |
| Switches do not forward traffic directly between host in different VLANs | true |
| a process that routers use to determine the path the IP packets should take over a network to reach their destination | Routing |
| Have many network interfaces/ports for end hosts to connect to (usually 24+) | Switch |
| Have the shutdown command applied by default – will be in the administratively down/down state by default | Router Interface |
| 0011.5ccc.5c00 is the MAC Address format of: | Cisco |
| the layer 2 address to which the frame is being sent | Destination |
| When the number of VLANs increases, this is not viable. It will result in wasted interfaces, and often routers won’t have enough interfaces for each VLAN. What should be done? | Use trunk port to carry traffic from multiple VLANs over a single interface. |
| Frames that have an incorrect format | Frames |
| When a device sends some data to another device, it doesn’t just include a source and destination MAC address. | True |
| a single broadcast domain, including all devices that broadcast domain | LAN |
| [Marks the end of the preamble, and the beginning of the rest of the frame | SFD |
| If you disable service password-encryption | Current passwords will not be decrypted Future passwords will not be encrypted |
| The minimum payload(packet) sized is 36 bytes. | False |
| A network utility that is used to test reachability | PIng |
| Frames that are smaller than the maximum frame size (64 bytes) | Runts |
| Default gateway configuration is also called default route. | True |
| When sending data to another computer, you enter MAC address not the IP address. | false |
| Provides node-to-node connectivity and data transfer (for example, PC to switch, switch to router, router to router). Defines how data is formatted for transmission over a physical medium (for example, copper UTP cables). | Layer 2 Data link |
| a device that accesses a service made available by a server | Client |
| sent by the device that wants to know the MAC address of the other device | ARP Request |
| Also known as Burned –In Address (BIA) | MAC Address |
| refer to logical rules about how the devices should communicate, not physical standards | Protocols |
| indicates the layer 3 protocol used in the encapsulated packet ( IPV4 or IPV6), sometimes this is called a length field- indicating the length of the encapsulated data. | Type |
| Used to check for errors only in the IPv4 header | PV4 HEADER – HEADER CHECKSUM FIELD |
| A /32 netmask is used to specify the exact IP address of the interface. /32 means all 32 bits are fixed and can be changed. | False A /32 netmask is used to specify the exact IP address of the interface. /32 means all 32 bits are fixed and can't be changed. |
| Allows multiple angles (modes) of light waves to enter the fiberglass core | MULTIMODE FIBER |
| What if autonegotiation is disable on the device connected to the switch? | The switch will try to sense the speed that the other device is operating at. If it fails to sense the speed, it will use the slowest supported speed. |
| If you enable service password-encryption: | Current passwords will be encrypted Future passwords will be encrypted The enable secret will not be affected |
| Preamble has a length of 7 byte (56-bit) | true |
| used by the receiving device to detect any errors that might have occurred in transmission. | FRAME CHECK SEQUENCE |
| Preamble has a length of 7 byte (54-bit). | False Preamble has a length of 7 byte (56-bit). |
| a switchport which belongs to a single VLAN, and usually connects to end hosts like PCS | Access Port |
| categorize and provide a structure for networking protocols and standards | Network Models |
| Interfaces that can run at the same speed (10/100 or 10/100/1000) have default settings of speed auto and duplex auto. | False Interfaces that can run at different speeds (10/100 or 10/100/1000) have default settings of speed auto and duplex auto. |
| Provide connectivity to hosts within the same LAN (Local Area Network) | Switches |
| Do not have the shutdown command applied by default – will be in up/up state if connected to another device or down/down state if not connected to another device. | Switch Interface |
| Router and layer 3 switch (multi- layer switch) operates at network laye | true |
| Frames that failed the CRC check(in the ethernet FCS Trailer) | CRC |
| Frames the switch tried to send , but failed due to error | Output Errors |
| Breaks large pieces of data into smaller segments which can be more easily sent over the network and are less likely to cause transmission problems if errors occur. Provide host-to-host communication. | LAYER 4: TRANSPORT |
| Used to prevent infinite loops | IPV4 HEADER – TIME TO LIVE FIELD |
| Speed is measured in bits per second (Kbps, Mbps, Gbps, etc.) not bytes per second. | True |
| Allows devices to synchronize their receiver clocks. | Preamble |
| Monitor and control network traffic based on configured rules | Firewalls |
| Total of various counters, such as the above four | Inout Errors |
| Defines physical characteristics of the medium used to transfer data between devices. | LAYER 1: PHYSICAL |
| - A _______is a digital telecommunications network that allows nodes to share resources - Router - Switch - Firewall - Server - Client | computer network |
| A _____is a device that accesses a service made available by a server. | CLIENT |
| A _____is a device that provides functions or services for clients | Server |
| Have many network interfaces/ports for end hosts to connect to (usually 24+) | Switches |
| Provide connectivity to hosts within the same LAN (Local Area Network) | Switches |
| Do not provide connectivity between LANs/over the internet | Switches |
| Have fewer network interfaces than switches | Routers |
| Are used to provide connectivity between LANs | Routers |
| Routers are used to send data over the internet | True |
| These monitor and control network traffic based on the configuration rules | Firewall |
| Are known as “Next-Generation Firewalls” when they include more modern, advanced filtering capabilities | Firewalls |
| CISCO classic firewall, but modern ASAs include modern features so-called “next generation firewalls” including IPS (Intrusion Protection System) | ASA (Adaptive Security Appliance) |
| are hardware devices that filter traffic between networks | NETWORK FIREWALLS |
| are software applications that filter traffic entering and exiting a host machine, like a PC | HOST-BASED FIREWALLS |
| You are setting up a network for a small office and need a device to connect multiple computers within a local area network (LAN). Which device would best suit this purpose? | Switch |
| A company wants to ensure that its internal network is secure and isolated from the public internet. Which device should be installed to provide this protection? | Firewall |
| You need to connect two different networks that use different protocols. Which network device will facilitate this connection? | Gateway |
| In a network, which device is responsible for forwarding packets based on their IP address to reach devices outside of the LAN? | Router |
| Which device would be most suitable to expand a Wi-Fi network's coverage within a large office building? | Access Point |
| Which type of interface is commonly used to connect a router’s console port to a computer for configuration purposes? | Serial |
| You need to connect two network switches in different buildings across a large campus. Which type of cable is most suitable? | Fiber Optic |
| What type of cable is commonly used to connect a computer directly to a switch within a network? | Ethernet |
| What is the subnet mask for the IP address 192.168.23.45/16? | 255.255.0.0 |
| How many bits are in the subnet mask for the CIDR notation /16? | 16 bits |
| What is the network address for 192.168.23.45/16? | 192.168.0.0 |
| How many possible IP addresses are available in the /16 subnet? | 65,536 |
| What is the first usable IP address in the subnet 192.168.0.0/16? | 192.168.0.1 |
| What is the last usable IP address in the subnet 192.168.0.0/16? | 192.168.255.254 |
| What is the broadcast address for 192.168.23.45/16? | 192.168.255.255 |
| If the subnet is /16, how many bits are available for host addresses? | 16 bits |
| What would the CIDR notation be if the subnet mask was 255.255.255.0? | /24 |
| How many subnets are created if a /16 network is divided into /24 subnets? | 256 subnets |
| What is the IP class for 192.168.23.45? | Class C |
| If 192.168.23.45 belongs to a /16 subnet, what is the subnet range? | 192.168.0.0 to 192.168.255.255 |
| For 192.168.23.45/16, how many host addresses can each subnet support? | 65,534 |
| What would the subnet mask be for a /20 CIDR? | 255.255.240.0 |
| In binary, what does a /16 subnet mask look like? | 11111111.11111111.00000000.00000000 |
| What is the default subnet mask for a Class C IP? | 255.255.255.0 |
| Convert the subnet mask 255.255.0.0 to CIDR notation. | /16 |
| If a subnet has 65,536 addresses, what is its CIDR notation? | /16 |
| What is the last octet range for the network address 192.168.0.0/16? | 0 to 255 |
| If a device has the IP address 192.168.23.45/16, is 192.168.100.50 in the same subnet? | Yes |
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Nochubuena
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