Networking Concepts Flashcards
You need to provide text console–based access to a server for administration. Which protocol will provide encrypted text console based access for the server?
Telnet
RDP
SSH
SSH
Secure Shell (SSH) is a cryptographic protocol that provides encrypted text console–based access over an IP network. It is commonly used to securely administer Linux servers. Telnet provides text-based access, but it is in clear text
Which protocol is built into Microsoft servers for remote access purposes?
LDAP
Telnet
RDP
RDP
Remote Desktop Protocol (RDP) provides remote access to Microsoft servers for administration of the operating system. The RDP protocol redirects the keyboard, mouse, and monitor to the administrator’s computer
Which transport layer protocol provides assured delivery and retransmission of segments lost in transmission?
UDP
IP
TCP
TCP
The Transmission Control Protocol (TCP) provides sequenced and acknowledged segments. Because each segment is sequenced and acknowledged by the receiving computer, any segments lost in the delivery process will be re-requested at this layer
You cannot reach a particular destination network and believe that one of the connecting networks are down. Which utility will allow you to examine the path packets are taking?
ping
tracert
NDP
tracert
The tracert utility will detail the path a packet is taking to get to a destination network. Tracert uses the ICMP protocol to report the path a packet takes to the destination network
Which layer of the OSI does encryption and decryption occur on?
Application
Presentation
Session
Presentation
The presentation layer is responsible for encryption and decryption services. The presentation layer is also responsible for compression and decompression and translation services
Several of your users are complaining that the network slows down several times a day. You recently added a large number of clients to the immediate network. What should be done to reduce the impact of the additional hosts?
Create a single broadcast domain.
Create a single collision domain.
Create several broadcast domains.
Create several broadcast domains.
The addition of the clients added to the immediate network most likely raised the amount of broadcasts in the network. Although you could assign static IP addresses to all computers to reduce DHCP, ARP is still broadcast based. The recommended remedy is to create several broadcast domains with network segmentation
What is the normal maximum transmission unit (MTU) size for an Ethernet network?
1500 bytes
1548 bytes
9000 bytes
1500 bytes
The MTU of Ethernet is 1500 bytes, or 1518 bytes if you are including the source MAC address, destination MAC address, type field, and FCS
You had captured network traffic with a network capture utility. Several of the MAC addresses are FF:FF:FF:FF:FF:FF. What could these packets be?
ICMP traffic
Broadcast traffic
Multicast traffic
Broadcast traffic
When a broadcast is sent, the destination MAC address will be FF:FF:FF:FF:FF:FF. This destination MAC address tells the switch to forward the traffic to all active ports
You need to trunk two switches from two different vendors together. Which trunking protocol should you use?
ISL
- 1D
- 1Q
802.1Q
The 802.1Q protocol is an open standard trunking protocol. Inter-Switch Link (ISL) is another trunking protocol, but it can only be used on Cisco devices. Because your switches are from two different vendors, they are not both Cisco devices; therefore, 802.1Q must be used
When calculating Spanning Tree Protocol (STP), which switch will always become the root bridge?
The switch with the highest priority
The switch with the lowest MAC address
The switch with the lowest priority
The switch with the lowest priority
When calculating STP, the switch with the lowest MAC address will become the root bridge if all of the priorities are set to the default. However, if the priority on a particular switch is lower than the others, it will always become the root bridge
You have recently deployed several POE security cameras on a switch. You had chosen the switch because it met the power requirements of the cameras. However, several ports will not power up and you have now discovered that you are drawing too much power. Which option will quickly rectify the problem?
Purchase cameras with a lower power requirement.
Turn on POE+ support on the switch.
Turn on LLDP on the switch.
Turn on LLDP on the switch.
Link Layer Discovery Protocol (LLDP) and Cisco Discovery Protocol (CDP) communicate with neighboring devices and exchange power operating conditions. Turning on LLDP will quickly rectify the problem by adjusting power consumption
Which routing type is best implemented in stub networks?
Default routing
RIP routing
Static routing
Default routing
Default routing is best implemented in stub networks, because all networks other than the immediate one are accessed through the default gateway
You are obtaining another Internet provider for your company’s connectivity to the Internet. You want to make sure that if there is a failure, the routing protocol will advertise your company’s IP addresses and fail over. Which routing protocol should you use?
RIPv2
OSPF
BGP
BGP
Border Gateway Protocol is used as an external routing protocol for the Internet. When two providers are connected to a single site using BGP, the connection can fail over in the case of one provider suffering an outage
Which IPv6 address is not a valid address?
2001: 0db8:0:0:0:8d8:242:1
2001: 0db8::10e:0:12
2001: 0db8:45::10a::12
2001:0db8:45::10a::12
The IPv6 address of 2001:0db8:45::102::12 is not a valid IPv6 address. The double colon cannot be used twice in the IPv6 address
Which of these IPv6 addresses is a multicast address?
fe80: 4e56:e423:0001:0045:a0aa:eb7c:9850
fc05: b44e:ce5d:1e67:73e5:7a3e:a86c:8a35
ff03: 0340:508e:e0ee:e2be:3cec:abd8:e24b
ff03:0340:508e:e0ee:e2be:3cec:abd8:e24b
The IPv6 address of ff03:0340:508e:e0ee:e2be:3cec:abd8:e24b is a multicast address. Multicast addresses always start with FF as the first two digits
