ccna - ipv4 header

The IHL (Internet Header Length) field contains the size of the IP packet header; the minimum allowed size is 20 bytes. true. false.

Almost every network protocol is composed of two parts: header and data area (or payload). The header contains the protocol traffic and control information. Regarding the IPv4 header, which can be stated as being 4 bytes wide, it is correct to state that the field. A- Total Length contains the total size of the IP packet header, consisting of 12 bits. B- Flags has 3 bits, whose components are: none, DF (don’t fragment) and MF (more fragments). C- Type of Service (ToS) has 12 bits, and is responsible for determining some characteristics for data traffic. D -Fragment Offset is the first control element in fragmentation. It is an 8-bit field that refers to the initial byte of each packet fragment divided by 8. e- IHL (Internet Header Lengh), which can be translated as “Internet header size”, has 8 bits and is responsible for informing the type of message being transmitted.

When analyzing network traffic using a sniffer, a technician made the following statements: I. An Ethernet II frame marked with 0x800 indicates that the next header is IPv6. II. The source port field of the UDP header has 16 bits. III. When the TCP SYN flag is enabled, the next header will be HTTP. IV. The IPv6 header has the Next Header field. The following statements are correct ONLY in. A) I and III. B) III and IV. C) II and IV. D) I, II and III.

An IPv4 packet was captured with the value 001 in its flags field. The correct interpretation of these values ​​is: A- the packet can be fragmented and there are more fragments. B- the packet cannot be fragmented and is unique. C- the packet can be fragmented and there are no more fragments besides this one. D- the packet cannot be fragmented and there are no more fragments. E- the packet is the first of a series of fragments.

IPv4 is a version of the Internet Protocol. Regarding the characteristics of IPv4, mark V for true statements and F for false ones. ( ) It has an addressing limit. ( ) It requires the use of classes G and H in the network. ( ) It uses a field that informs its version. ( ) It eliminates the use of TTL, Offset and flags. Indicate the correct sequence. V, F, F, V. V, F, V, F. F, F, V, F. F, V, F, V.

The ‘Flags’ field of the IPv4 packet is used to signal packet fragmentation. This field has a total of 3 bits. Select the alternative that indicates that fragmentation has occurred. 0 0 0. 1 0 0. 0 1 0. 0 0 1. 1 1 0.

The Address Resolution Protocol (ARP) is used in computer networks. Regarding ARP, mark V for true statements and F for false statements. ( ) It is a TCP/IP layer protocol. ( ) It implements the QoS flag in IPv6. ( ) It enables address resolution. ( ) It was defined by RFC 826. Select the correct sequence. F, V, V, F. F, F, V, V. V, V, F, V. V, F, F, F.