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91 Cards in this Set
- Front
- Back
__________ is a collection of standards organizations representing 162 countries. |
ISO |
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Which layer of the OSI model ensures, error-free delivery, in sequence, without losses? |
Transport Layer |
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For greater network efficiency, segmentation is preferred. (True or False) |
True |
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All protocols are routable. (T / F) |
False |
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Traditional switches operate at the ____ layer of the OSI model. |
Data Link Layer (2) |
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Bridges operate at which layer of the OSI model? |
Data Link Layer (2) |
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What is the default subnet mask for the following IP address: 154.13.44.87? |
255.255.0.0 |
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An IPv6 address for which uniqueness has been verified and from which unicast traffic can be sent and received is classified as _________. |
Valid |
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A class ____ network class is reserved for special purposes. |
Class D Network |
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If your network does not need or use APIPA, it must be uninstalled to avoid conflicts. (T/F) |
False |
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Which of the following routing protocols has the poorest convergence time? |
RIP |
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Which of the following devices separates broadcast domains? |
Router |
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Which of the following uses port 22 by default? |
SSH |
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SIP regulates ____ for VoIP or video-over-IP clients and servers. |
call signaling and control |
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TCP ensures reliable data delivery through sequencing and ____________________. |
Checksums |
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____ messaging is a service that makes several forms of communication available from a single user interface. |
Unified |
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Routers use IGMP to: |
Identify nodes belonging to a multicast group |
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What protocol is used to transfer mail between a Sendmail server and a Microsoft Exchange server? |
SMTP |
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Which DNS record type will contain the host’s IPv6 address? |
AAAA |
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You are troubleshooting a problem that you suspect is caused by an Internet gateway failure. Assuming your organization relies on only one Internet gateway, which of the following symptoms would lead you to focus on that gateway as the source of the problem? |
All users on a network are unable to retrieve e-mail. |
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Gateways are part of which layer of the OSI model? |
Apllication Layer (7) |
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Routers are part of which layer of the OSI model? |
Network Layer (3) |
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Network Interface Cards (NIC's) are part of which layer(s) of the OSI model? |
Physical Layer (1) Data Link Layer (2) |
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Hubs are part of which layer of the OSI model? |
Physical Layer (1) |
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Repeaters are part of which layer of the OSI model? |
Physical Layer (1) |
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The first octet of a class _____ network ranges from 1-126. |
Class A IPv4 Network |
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The first octet of a class _____ network ranges from 128-191. |
Class B IPv4 Network |
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The first octet of a class _____ network ranges from 191-223. |
Class C IPv4 Network |
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255.0.0.0 is the default mask for a Class ____ network. |
Class A Network |
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255.255.0.0 is the default mask for a Class ____ network. |
Class B Network |
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255.255.255.0 is the default mask for a Class ____ network. |
Class C Network |
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Which layer of the OSI model provides interface between software applications and network for interpreting application requests and requirements? |
Application Layer (7) |
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Which layer of the OSI model allows hosts and applications to use common language; performs data formatting, encryption, and compression? |
Presentation Layer (6) |
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Which layer of the OSI model establishes, maintains, and terminates user connections? |
Session Layer (5) |
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Which layer of the OSI model ensures accurate delivery of data through flow control, segmentation and reassembly, error correction, and acknowledgment? |
Transport Layer (4) |
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Which layer of the OSI model establishes network connections, translates network addresses into their physical counterparts and terminates routing? |
Network Layer (3) |
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Which layer of the OSI model packages data in frames appropriate to network transmission methods? |
Data Link Layer (2) |
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Which layer of the OSI model manages signaling to and from physical network connections? |
Physical Layer (1) |
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What is the function of the IPv6 Special Address(es):
::1 |
Loopback |
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What is the function of the IPv6 Special Address(es):
Addresses beginning with FC00 |
Private |
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What is the function of the IPv6 Special Address(es):
Addresses beginning with FE80 |
Link-local unicast |
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What is the function of the IPv6 Special Address(es):
Addresses beginning with FEC0 |
Site-Local unicast |
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What is the function of the IPv6 Special Address(es):
Addresses beginning with FF0x |
Multicast |
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Which data link sublayer manages flow control? |
LLC |
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At which layers of the OSI model are gateways capable of functioning? |
At all layers |
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____ is more efficient at carrying messages that fit into one data packet. |
UDP |
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Ports ranging from 49152 - 65535, open for use without restriction are called ______. |
Dynamic Ports |
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____ are often considered third level support. |
Help desk coordinators |
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IP address 169.254.23.5 may have been issued by _____. |
APIPA |
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______ operate between the 4th and 7th layers. |
Content switches |
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The ______ layer is responsible for converting electrical signals into voltages. |
Physical Layer (1) |
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____________________ are documented agreements containing technical specifications or other precise criteria that stipulate how a particular product or service should be designed or performed. |
Standards |
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Protocols that can span more than one LAN (or LAN segment) are ____________________, because they carry Network layer addressing information that can be interpreted by a router. |
Routable |
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Not all Transport layer protocols are concerned with reliability. (T/F) |
True |
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____________________ protocols establish a connection with another node before they begin transmitting data. |
Connection oriented |
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In which OSI model layer does TCP operate? |
Transport |
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Bridges operate at which layer of the OSI model? |
Data link Layer (2) |
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Which of the following would you use to connect networks using completely different protocols? |
Gateway |
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CIDR notation takes the form of the network ID followed by a(n) ____, followed by the number of bits that are used for the extended network prefix. |
Forward slash (/) |
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What is the default subnet mask for the following IP address: 154.13.44.87? |
255.255.0.0 |
|
What is the default subnet mask for a Class C network? |
255.255.255.0 |
|
Which of the following devices separates broadcast domains? |
Routers |
|
Which of the following routing protocols has the poorest convergence time? |
RIP |
|
What is the default port for HTTPS? |
443 |
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IPTV, videoconferencing, streaming video, and IP multicasting belong to the range of services known as ____. |
Video over IP |
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What can RTCP do that RTP cannot? |
Report on the degree of packet loss and delay in a connection |
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What protocol manages addressing for multicast groups? |
IGMP |
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____ is the use of one network to simultaneously carry voice, video, and data communications. |
Convergance |
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____ is a terminal emulation protocol used to log on to remote hosts using the TCP/IP protocol suite. |
Telnet |
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Which DNS record type will contain a mail server address? |
MX |
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A help desk is typically staffed with ____________________ - people proficient in workstation and network troubleshooting. |
Help desk analysts |
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____________ determines standards for the electronics industry and other fields, such as chemical and nuclear engineering, health and safety, and construction. |
ANSI |
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Network functions are associated with only one layer of the OSI model. (T/F) |
False |
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____________________ is the process of gauging the appropriate rate of transmission based on how fast the recipient can accept data. |
Flow control |
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In which of the following situations would it be most desirable to use a connectionless Transport layer protocol? |
When viewing a movie on the web |
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Data-link layer protocols break large data units into ____. |
Frames |
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Transport layer protocols break large data units into ____. |
Segments |
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In IPv4 addressing, each IP address is a unique ____ number. |
32-Bit |
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A(n) ____ address represents any one interface from a group of interfaces, any one of which can accept a transmission. |
Anycast |
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In IPv6, each address contains a(n) ____, or a variable-length field at the beginning of the address that indicates what type of address it is. |
Format prefix |
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In dotted decimal notation, a(n) ____ separates each decimal. |
Period |
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____ routing is a technique in which a network administrator programs a router to use specific paths between nodes. |
Static |
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Using RIP, what is the maximum number of hops a packet can take between its source and its destination? |
15 |
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What is the default port for NTP? |
123 |
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TCP is a(n) ____ subprotocol. |
Connection-oriented |
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What type of video-over-IP service relies on full-duplex communication? |
Videoconfrencing |
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Watching a YouTube video on the Web is an example of which of the following types of video-over-IP services? |
Streaming video |
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What are two benefits of using IMAP4 relative to POP3? |
It allows users to review and delete mail without downloading it from the mail server.
It enables multiple users to easily share a central mailbox.
|
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Which of the following utilities could you use to log on to a UNIX host? |
Telnet |
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Ports ranging from 0 to 1023; assigned to processes that only the operating system or an administrator of the system can access. are called ___________. |
Well-known ports |
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Which of the following is an example of a network change that could cause only one group of workstations out of the dozen workgroups in your organization to lose connectivity to a local file server? |
The configuration on a switch in the telecommunications closet is upgraded. |